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| ee Mobile FM Two-Way Radio _
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PRINTED INU.S.A,
AEPD-1403-O (MC3971)
SECTION
INDEX
MOTOROLA
"T-POWER” MOBILE | °<""-"
FM TWO-WAY RADIO
50 W RE POWER ”
25-54 MC
12 VDC
INSTALLATION
& OPERATION
RECEIVER
TRANSMITTER
SPEAKER
MICROPHONE
POWER SUPPLY
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MAINTENANCE
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MOTOROLA INC | SUPPR
‘= COMMUNICATIONS DIVISION SUPPRESSION
Engineering Publications 4591 W. Augusta Blvd. Chicago 51, Illinois
Printed in U.S.A. 68P862725
11/5/59-RCS Issue - A
GUARANTEED PERFORMANCE SPECIFICATIONS
MODELS U51GGT-1000 Series
INSTALLATION Front Mount or Trunk Mount
FREQUENCY 25-54 mc
TRANSMITTER RF
POWER OUTPUT
50 watts minimum
40F3: +15 kc for 100% at 1000 cps or
20F3: + 5 kc for 100% at 1000 cps
TRANSMITTER
MODULATION
RECEIVER
SENSITIVITY
Less than 0. 3 microvolt for 20 db quieting
50 ohms RF input impedance
-100 db at +15 ke (20 ke channel spacing)
- 100 db at +32 kc (40 kc channel spacing)
RECEIVER
| SELECTIVITY
RECEIVER MODULATION
ACCEPTANCE
+ 5 kc (20 kc channel spacing)
+15 ke (40 kc channel spacing)
Chassis mounted metering sockets on the transmitter and receiver
facilitate convenient metering of all circuits essential to tuning
and checking. A MOTOROLA portable test set or a 0-50 micro-
ampere meter can be used for this purpose.
INPUT VOLTAGE 12 VDC Positive or Negative Ground
DRAIN
INTERMITTENT DRAIN Each crystal heater: 0.65 amps
| POWER SUPPLY Fully transistorized
WEIGHT Approximately 47 lbs. (including accessories)
Trunk Mount: 6" high x 9-7/8'' wide x 19-1/4"' long overall
Front Mount: 6'' high x 9-7/8" wide x 20-3/4"' long overall
| METERING
DIMENSIONS
The MOTOROLA 2-way radio equipment described in this manual
meets or exceeds all requirements for FCC licensing, and is in-
cluded in the FCC "List of Equipment Acceptable for Licensing in
the Radio Services other than Broadcast".
LICENSING
| INFORMATION
Identification of ''Transmitter Type'' (KMTR TYPE) appears on the
equipment nameplate and on the transmitter chassis and is:
Type Number....... CC1008 (25-54 MC) for licensing under FCC
BUletparts .Ocml lm lo,eands2ac
SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE.
li
FOREWORD
PURPOSE OF THE MANUAL
This manual offers the serviceman complete
installation, operation, maintenance and service
information on the MOTOROLA 2-way radio models
described in it.
The manual will serve as a ready reference
for the experienced technician andalso as a step-
by-step guide for the inexperienced man.
For convenience and quick reference, the
manual is divided into separate sections. Each
section has complete alignment, service and
maintenance information on its chassis and/or
kits and includes its own diagrams, details and
parts lists. For example, the Receiver section
contains complete information on the receiver
models described in it. Installation and oper-
ation of the complete radio set are covered ina
separate section. All major section paragraph
headings and diagrams are listed for the service-
man's use in the Table of Contents.
THE “RADIO SET"
MOTOROLA 2-way radio equipment is pack-
aged as a radio set plus accessories. The radio
set is assigned a model number for identification
purposes. It includes the transmitter, receiver,
and power supply chassis in a single housing.
This modelnumber describes the package specifi-
cally. Use the model number in its entirety when
making inquiries about the equipment.
U51GGT-1000A - describes a
trunk mount, 25-54 mc, 40 kc
channel spaced set with a 50 watt,
one frequencytransmitter, and a
transistorized power supply.
Example:
It is evident that the model number is easier
to use and is more specific than a word descrip-
tion.
The accessories are identified by an acces-
sory group number which includes those other
items essential to completing the radio installa-
tion such as; antenna, speaker, cables, etc. Use
this number when referring to a specific group of
accessories.
DA1100C - describes an acces-
sory group whichincludes a one-
frequency control head and mi-
crophone, 12 v dc cable kit, in-
Example:
stallation kit for a 10-inch hous-
ing, antenna, and a speaker.
In addition to these model and group numbers,
Motorola has assigned identifiers to all chassis
and kits. These are for inventory and stock
control purposes and should be used by the ser-
viceman when requesting information on them or
when ordering replacements. Use the assigned
number identifiers. It will be to your benefit.
These are the only sure means of describing the
radio equipment and its many parts.
The radio set modelnumber is metal stamped
on the equipment nameplate along with the trans-
mitter type number, serial number and type of
primary power. Chassis and kit numbers are
rubber stamped on the chassis or kit itself.
For the serviceman's use, breakdown cross
reference charts on radio set models and acces-
sory groups are located inthe front matter section
of the manual.
PRODUCTION CHANGES
When production and engineering changes
are incorporated into the equipment, a revision
numeral is assigned tothe chassis or kit affected,
e.g.; TA234 becomes TA234-1, with the first
revision. This chassis number complete with re-
vision numeral is stamped on the chassis at the
time of production, and the revision numeral be-
comes an integral part of the chassis identifier.
A schematic diagram number complete with
its issue letter is also stamped on each chassis.
This establishes direct correlation between the
chassis and its schematic. The schematic issue
is advanced each time a change occurs in the
chassis. The most recent issue is stamped on
the chassis.
INSTRUCTION MANUAL REVISION BULLETINS
Those changes which occur after an instruc-
tion manualis printed are covered by the Instruc-
tion Manual Revision Bulletins. These bulletins
give the reader complete information onthe change
including pertinent parts listing data from which
the instruction manual can be corrected.
NATIONAL SERVICE ORGANIZATION
Motorola is a nation-wide service organi-
zation. Through its maintenance and installation
iii
program Motorola makes available the finest
service to those desiring
reliable continuous com-
nattona
munications on a contract
basis. MOTOROLA
RADIO COMMUNICATIONS
The Targest™ “service:
organization specializing in”
mobile communications is
Motorola's National Service Organization. Over
800 strategically located, adequately staffed and
trained, independently owned and _ operated
stations, manned with several thousand F.C.C.
Licensed Personnelconstitute the subcontracting
force.
The administrative forces of area and dis-
trict service managers and district service
representatives are in the direct employ of
Motorola.
For your contract service requirements,
please contact your local Motorola representative
or write to:
National Service Manager
Motorola Communications and Electronics, Inc.
4501 W. Augusta Blvd.
Chicago 51, Illinois
REPLACEMENT PARTS ORDERING
MOTOROLA maintains parts and service
depots in Dallas, Texas, and Burlingame, Cali-
fornia, to supplement the activities of the Parts
and Service Department in Chicago. The table
outlines the services provided by these facilities:
Factory: Crystal Service Department,
916 N. Kilbourn Ave. ,
Chicago 51, Illinois
Chicago Parts and Service Department:
4910 West Flournoy Street
Chicago 44, Illinois
Dallas Parts Depot:
7138 Envoy Court,
Dallas 35, Texas
Area Parts & Resonant
Served Service Crystals Reeds
Ee
and
Eastern
Southern | Dallas Factory | Dallas
area
Western | Burlingame] Factory | Burlingame
area
area
These offices are fully equipped to give this
service. When ordering replacement parts, the
complete number identification of the item must
be used whether it be a component, kit or com-
plete chassis. This will fix proper identification
Burlingame Parts Depot:
1616 Rollins Road,
Burlingame, California
Chicago
Parts Dept
andinsure receipt of the desired item. Complete
number identification should also be used when
requesting equipment information.
Crystal orders should specify crystal type
number, crystal frequency, carrier frequency
and the chassis modelnumber in which the crystal
is to be used.
Orders for '"Vibrasender™ and. ''Vibra-
sponder'' Resonant Reeds should specify the type
number and frequency and should identify the
owner and operator of the 'private-line'' network
in which these items are to be used.
CAREFUL USE OF THE INSTRUCTION MANUAL AND THE MANY SUGGESTIONS
CONTAINED IN IT WILL FURTHER INSURE PROPERLY INSTALLED AND
MAINTAINED RADIO EQUIPMENT.
THE EQUIPMENT DESCRIBED IN THIS MANUAL IS MANUFACTURED UNDER
iv
ONE OR MORE OF THE FOLLOWING MOTOROLA U.S. PATENTS:
2, 830,200
RE-24, 110 2,547,027 2, 688,059 Dt o 9,052 2, 833; 994
Doo ase ZrO OORT OF 2,691,094 ZytD9, 103 2,834, 879
25.343, 105 2,583,032 2,091,560 Agri COg wen 2,835, 794
2,404, 359 2, 602, 842 2,699, 425 PAS TCC hall 2,846,596
2,439, 408 2,608, 648 22(05,c08 2, 784, 263 fae aba ayn 16 5X0)
2,439, 412 2, 608, 649 2,713, 664 2,199, 001 2,860, 239
25459; 675 2, 626, 384 Pape CRM ASIN) 2,799,010 2, 864, 943
eyaley, OZ ZpOSO cOOZ 2,738, 466 2,799, 832 2,683,021
2,524, 300 2 OS uaa Zz, 740, 891 2,808, 507 2,888, 652
2,524, 534 27OD0msas 2,743, 144 2,809, 236 2,899, 547
25547, 023 2} OS2m O42 2, 743;361 2,810,068 2,901,601
2,547,025 2,662,942 Z, 150; 451 2,811,590 2; 905,909
Other U.S. Patents Pending
CONTENTS
SECTION
Guaranteed Performance Specifications .
Radio Set Cross Reference Chart .
Accessory Group Cross Reference Chart
DESCRIPTION .
Introduction. :
General Description .
Description of Radio Set Ieerds
Description of Standard Accessories
Optional Accessories
INSTALLATION AND OPERATION
Installation .
Operation
Pre-operational Checks and Adjustments .
Operator's Instructions
Circuit. Description
Diagrams
Simplified Functional Diagram
Front Mount Intercabling Diagram and Pants: List ,
Rear Mount Intercabling Diagram and Parts List
RECEIVER
Description. 4 fob MT setigp HEIN ag A hic ihe
Guaranteed Performance Cpeciticetione
Operation .
Operating Pepustidents ;
Alignment Procedure
Pre-operational Notes
Comprehensive Alignment Pireceante :
Single-Frequency Receiver Schematic One Batts Peestion Detail
and Parts List : :
Two-Frequency Receiver Beheriate ereeeeen Parte eration Detail
and Parts List
TRANSMITTER .
Description. ; :
Guaranteed Perro remanes Beretiaaiione
Chassis Complement
Circuit Operation
Adjustment of the IDC Control
Alignment Procedure
Bench Alignment . :
Schematic Diagram, Parts Doestion Detail aaa Baris List
POWER SUPPLY .
Introduction eipes
Performance Syeciications
Description.
NUMBER
Page ii
EPD-1233
EPD- 1883
68P862726
Page 1
Page l
Page 2
Page 3
Page 4
68P862727
Page 1
63E856476
63E856474
63E856475
68P854950
Page 1
Page
Page
Page
Page
Page
EPD-869
Ooo fh LW
63E 854952
63E 854953
68P854610
Page aw
Page
Page
Page
Page
Page 7
EPD-950
63E854612
AWW NWN
68P856461
Page 1
Page 2
Page 2
SECTION
Operation
Transistor Cheering.
Parts Location Detail :
Schematic Diagram and Parts List :
ROUTINE MAINTENANCE
SUPPRESSION OF IGNITION NOISE IN MOBILE EQUIPMENT
vi
Introduction. :
Maintenance checks i ‘
Housing Parts Identification Detail :
Noise Suppression
Source - ;
Radio Podiomene Davee Souree
Ignition Mg Se SA
Resistance Type Suppressors.
Spark Plug Leads.
Contacts.
Coupling.
Distributor .
D-C Generating Sverre
Generator
Voltage Reguiaiom
Gauges :
Oil Sender
Static Charges.
Bonding . ye:
Counterphasing or Neves Beene
Summary
Noise identification ana Suaptecaion Chere
Typical Noise Suppression Detail
NUMBER
Page 2
Page’)
AEPD-1312
63E 856462
68P856479
Page 1
Page 3
EPD-1285
68P856127
Page
Page
Page
Page
Page
Page
Page
Page
Page
Page
Page
Page
Page
Page
Page
Page
Page
Page
Page
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Motorola No. EPD-1883-A
11/5/59-RCS
1. INTRODUCTION
The new MOTOROLA T-POWER mobile FM
two-way radio sets incorporate several design
features which reduce maintenance and provide
full interchangeability between front and rear
mount radio sets. These features are:
(1) transistorized power supply
(2) interchangeable radio set drawer as-
sembly
(3)
"plug-in" control head
a. Transistorized Power Supply
The new MOTOROLA fully transistorized
power supply uses long-life power transistors in
place of conventional vibrator units. The transis-
torized supply provides operating voltages for both
transmitter and receiver, The use of transistors
eliminates the cost of replacing vibrators and im-
proves overall operation of the radio set.
b. Interchangeability
The radio set housing mounts either under the
vehicle dash or in the trunk of the car. The same
drawer assembly, including transmitter, receiver
and power supply, slides into the housing ineither
type of installation. In mobile radio fleets where
both front- and rear-mount installations are used,
this design provides full flexibility of exchange
between vehicles. Rear mount radio sets are re-
motely controlled by means of a dash-mounted
control head. The drawer assemblies can be in-
terchanged between vehicles with positive or neg-
ative ground electrical systems.
MOTOROLA INC.
AA
Engineering Publications
11/5/59-RCS
4501 W. Augusta Blvd.
-|-
DESCRIPTION
c. Plug-In Control Head
In dash-mount installations the control head
plugs into a receptacle on the front of the radio
set drawer assembly. Two lockscrews secure it
in place. In trunk-mount installations the control
head mounts on the vehicle dash and a cable kit
makes the connections between the control head
and the receptacle on the front of the radio set.
Thus, the same radio set drawer assembly canbe
easily exchanged between front and rear-mount
housings.
2. GENERAL DESCRIPTION
a. T-POWER "Radio Set''
The basic radio set consists of a transmitter,
receiver, power supply and housing. The trans-
mitter, receiver and power supply are assembled
together to form a drawer unit which slides into
the housing. External connections are made
through receptacles on the front of the housing.
The radio set can be installed either under the dash
(front) or in the trunk (rear) of the vehicle.
Various T-POWER models are available,
providing either one or two-frequency trans-
mitters, and with either 20 kc or 40 kc channel
Spacing receivers. The radioset cross reference
chart, which precedes this section of the manual,
shows the available models and summarizes
the equipment supplied with each variation.
b. Accessory Groups
In addition to the basic radio set, an "acces-
sory group" is required to complete the installa-
tion, The accessory group includes the control
COMMUNICATIONS DIVISION
Chicago 51], Illinois
68P862726-O
head, cable kit, antenna, mounting hardware and
other required items. Accessory groups are
classified for either rear-mount or front-mount
installations.
(1) Rear-Mount Accessory Groups
Rear-mount accessory groups include a
control head designed for mounting on the vehicle
dash and a cable kit for interconnecting the radio
setand control head. Control heads are available
either withor without microphones. Models sup-
plied less microphone have a four-pin receptacle
for connecting a detachable microphone or hand-
set. Models supplied with microphone have a
palm-type microphone wired-in at the factory.
Rear-mount accessory groups include either a
3-ohm permanent magnet speaker or the new
MOTOROLA POWER-VOICE speaker with built-in
booster amplifier. This speaker provides anaudio
output of 15 watts from the normal radio set re-
ceiver output.
Accessory groups are listed inthe acces-
sory group cross reference chart in the front of
this manual.
(2) Front-Mount Accessory Groups
Front-mount accessory groups include a
plug-in control head which mounts directly on tne
radio set front panel. These control heads are
available for use with detachable microphones or
complete with factory wired-in microphones as
described for rear-mount control heads, Theac-
cessory group includes either a 3-ohm PM speaker
or the new MOTOROLA 15-watt POWER VOICE
speaker with built-in transistorized audio ampli-
fier.
These accessory groups are listed inthe
accessory groupcross reference chartat the front
of this manual.
3. DESCRIPTION OF RADIO SET ITEMS
The items included in the radio setare sum-
marized on the model chart at the front of this
manual. Major units, such as the receiver,
transmitter and power supply are fully described
in the various sections of this manual, as indicated
in the table of contents. Items not covered in
separate sections are described in the following
paragraphs.
a. Sub=panel Kit
The TK603 Sub-panel Kit is used withthe radio
sets covered inthis manual. This kit includes the
front and rear tie-plates andthe hardware required
to assemble the transmitter, receiver and power
supply into a single mechanical unit. This ti.ree
chassis assembly then slides into the housing as .-
adrawerunit. The power supply connector mounts
on the front sub-panel of this kit, making tne re-
ceptacle available for an external mating plug. A
coaxialcable whichinterconnects the receiver r-f
circuit to the antenna relay is also included with
this kit.
b. Housing
The 50 watt T-POWER radio sets are housed
in the K-9045 Housing. This housing is 9-7/8
inches wide x 18-1/2 inches deep x 6 inches high.
The housing is aheavy gauge steel cabinet designed
to house the receiver, power Supply and tréns-
nitter assemblyas adrawer unit. The housing 1s
finished in an automotive type baked enamel.
Housing tops are removable for access to com-
ponents mounted on the chassis.
(eh Front Panel
The TK661 Front Panel forms the exterior
front panelof the drawer unit. This panelincludes
an extruded aluminum heat radiator and the two
power transistors used with the power supply. A
chrome-plated bar on this panel is a carrying
handle when pulledupand outward. Springcatches
on the heat radiator fins secure the handle when
not in use. A key-lock mounted on this panel se-
cures the radio set against unauthorized person-
nel. Metering ports give access tothe transmitter
and receiver meter sockets. The 19-pin power
supply receptacle is accessible through a hole in
this panel. The antenna receptacle for the radio
set is mountedonthis panel. Acoaxialcable con-
nects this receptacle to the ANT. receptacle on
the transmitter chassis.
d. Crystals
The crystals used in the radio set are listed
inthe radio set cross reference chartat tne front
of this manual. If crystals are re-ordered refer
to the REPLACEMENT PARTS ORDERING para-
graph in the FOREWORD of this manual.
e. Alignment Tool Kit
The K-9322 Alignment Tool Kit is included
with the radio set at the rate of one kit per five
sets (orless, if lessthan five are ordered). This
kit includes the tool required for aligning the trans-
mitter and, receiver:
4. DESCRIPTION OF STANDARD ACCESSORIES
a. Cable Kits
Cable kits are not supplied as part of the
radio set model, but are includedin the accessory
group, which must be ordered separately for each
type of installation. The type of cable kit used
depends upon frontor rear mount installation and
upon one-frequency or two-frequency operation.
The cable kits available are listed in the acces-
sory chart.
b. Installation Kit
The installation kit includes a distributor
suppressor, by-pass capacitors, cable clamps
and mounting hardware for installing the radio
sets. It is usedforfront and trunk mount models.
c. Antennas
The TU304 and TU305 Series Spring Base An-
tennas are designed for 25-54 mc mobile radio
installations. The antennaconsists of al/4 wave-
length stainless steel rod, a universal spring base
swivel mountanda coaxial lead-incable. Antenna
rods are cut to length at the factory for specific
frequencies. TU304 antennas havea 5-ft. lead-
in; TU305 antennas have a 20-ft. lead-in. The
available antennas are as follows:
Frequency Type of
Model No. Range Installation
TU304-H 30-54 5mcr Rear Mount
TU304-L 25-30) me, Rear Mount
2U305-H 30-54 mc Front Mount
PUS05<-L 25-30: mex Front Mount
d. Speaker
The TU324A Trunnion Mount Speaker is de-
signed for mounting on a Suitable flat surface in
the vehicle. It canbe mounted directly on the fire
wall or dashboard. It can be mounted on the
steering column when the TK395 Adapter Kit is
used. The unit consists of a 3-ohm, 5 inch PM
speaker installed in alouvered steel housing. An
eight-foot, 2-conductor cable is included.
e. POWER-VOICE Speaker
The Model TU433A-12V POWER VOICE
Speaker is a combination speaker and transis-
torized audio amplifier ina louvered steel housing.
Two power transistors in atransformer-coupled,
push-pull circuit boost the receiver audio output
to a 15-watt level with less than 10% distortion.
This unit is especially desirable for all high am-
bient noise applications or where the receiver
must be monitored at some distance from the
vehicle,
ia Control Heads
The control head provides the required con-
trol facilities for operation of the radio set. Two
basic models are available for front mount radio
sets and twoare available for rear mount models.
Model variations include one or two-frequency op-
eration and 'wired-in'' micropnone or provisions
for detachable microphone.
Front-mount models are designed for direct
plug-in connection to the radio set front panel.
Control heads for rear-mount models are mounted
on the vehicle dash with an adjustable angle
bracket.
Referto the intercabling diagrams in this in-
struction manual for wiring details of tne control
neads.
OPTIONAL ACCESSORIES
P-346 GENERATOR FILTER
TU546 SERIES PORTABLE TEST SET
Used to attenuate generator interference. Rated
For testing and alignment of Motorola trans- at 40 amperes.
mitters and receivers. Cable and plug mate with
METER sockets on radio chassis.
P-~7208 WATTMETER
DUMMY LOAD MILIEU SON WINES
TU353A MICROPHONE
UA (See ee O NE
Used with portable test
HANDSET
set to measure trans-
mitter rf power output.
For control heads
SPECIAL PURPOSE KITS with 4-pin MIC recep-
iaele., Jawoullicasia pacsine
K-8292 Hood Wipe r--Suppressor, Used to reduce sistorized pre-ampli-
interference from noise generated in the vehicle. fier. Moving coil
element for improved
VOLGeR Te product one
12' coiledtinsel cord.
DPST push-to-talk
switch. Mice and
K-7257 Extension »Gable. Provides full length
ground return from rear-mount radio set to bat-
tery. Consists of two 17-foot lengths No. 4 cable
with lugs at each end.
handset interchanpe-
Long Cable Kits. For limousine and truck instal- able.
lations. With 20-ft cables instead of 17-ft.
cables. Fully interchangeable.
EPD-1742 (CE1070) EPD- 1491
MC1971
EPD-1741 (CE044)
INSTALLATION AND OPERATION
INSTALLATION
Installation instructions are packed and shipped with the radio set accessories.
OPERATION
PRE-OPERATIONAL CHECKS AND
ADJUSTMENTS
a. Purpose
The purpose of the pre-operational check is
to ascertain that the mobile radio set is oper-
ating properly when initially placed in service.
The equipment has been accurately aligned
at the factory for optimum performance. It is
possible, however, that mishandling in transit
may have disturbed some of the adjustments. It
is essential, therefore, that a pre-operational
check be made to assure proper operation when
the equipment is installed.
b. Pre-Installation Bench Check
The radio set can be checked before instal-
lation using a bench test set-up with permanently
installed cabling and control facilities and a bat-
tery or battery eliminator. The dc supply must
MOTOROLA INC.
AA
Engineering Publications
11/5/59-RCS
4501 W. Augusta Blvd.
sa
be a 12-volt source. An antenna dummy load, rf
wattmeter or operational antenna must be con-
nected to the radio set ANTENNA connector on
the front panel. <A test set for metering the
transmitter and receiver should be available.
This type of laboratory set-up is particularly
useful where many sets must be checked, how-
ever, it does not give a complete check of the
actual cables, control unit and speaker to be
used,
The ideal set-up for a pre-installation check
is a bench test in which the radio set, cable kit,
control head, speaker and antenna are assembled
to form a complete facsimile of the vehicular
installation. The pictorial cabling diagrams in
the installation instructions packed with the cable
kit show how to interconnect the various items.
Once the test set-up is assembled the equip-
ment can be turned on and operated as described
in the following paragraphs.
COMMUNICATIONS DIVISION
Chicago 5], Illinois
68P862727-A
Ge Installation Checks
Before placing this radio set in operation
make the following installation checks:
(1) General
Be sure all cable connections and bolted
connections are secure. Make sure all fuses are
in place and all tubes are firmly seated.
(a) Be sure the equipment is connected
with the proper polarity to al2-volt dc electrical
system. Set the ON-OFF toggle switch to the ON
position. This applies the dc input to the radio
set.
(b) The green pilot lamp should be lit
and all tube filarnents should be energized. To
check filaments, unlock the drawer assembly and
slide the drawer out or lift the top of the housing.
After making this check keep the radio set open
for the following checks.
(3) Check Receiver
(a) Meter Readings
Check receiver meter readings
against the STAGE MEASUREMENT CHART in
the RECEIVER section (noise input readings
Use the Motorola portable test set or
testimeter. The
only).
equivalent 0-50 microamp.
cable of the portable test set plugs directly into
the metering socket of the receiver chassis.
Check meter readings in the various test po-
sitions as indicated on the chart. If any of the
readings are beyond the given limits, re-align
the receiver as described in the RECEIVER
section.
(b) Check for Normal Operation
With the receiver properly aligned,
the dc input applied to the equipment and the an-
tenna connected, the receiver should be in full
operation. Check for proper operation as
follows: Turn the VOLUME control to the full
clockwise position. Turn the SQUELCH control
to the full counterclockwise position (open). You
should hear either a loud, rushing noise in the
speaker or signals from any on-frequency station
In the
absence of any received signals the loud, rushing
noise is a normal indication of receiver oper-
ation with "open" squelch.
which may be on the air at this time.
(c) To Set the VOLUME Control
There are two controls involved in
adjusting the audio level to the speaker. These
controls must be adjusted in the presence of a
normal, fully deviated signal from the base
station transmitter (or other mobile located at an
average distance). To adjust these controls pro-
ceed ag follows:
With a signal being received, set
the VOLUME control on the control head to
maximum volume (fully clockwise). Then adjust
the audio level control on the receiver chassis to
a setting just below the point where distoriion
becomes audible. Now, reset the control head
VOLUME control for the desired listening level.
The use of two controls in the audio
circuits permits future readjustment of the
speaker level at the control head without re-
setting the receiver audio level control.
(d) To Set the SQUELCH Control
Turn the SQUELCH control in the
clockwise direction until the noise is squelched
(cuts out).
a1) 2 COs eeu Sone
The operation of the transmitter in this
radio set is covered by FCC rules and regu-
lations. Several provisions of these rules are
briefly summarized in this paragraph. For
complete information, refer to the current FCC
regulations covering the applicable type of
service and equipment, FCC regulations
excerpts:
(a) Transmitter frequency and devi-
ation must be checked before a transmitter is
placed in service and at least every six months
thereafter. A suitable procedure shall be
employed to ascertain that the transmitter is on
the assigned carrier frequency and that the
transmitter crystal actually controls the fre-
quency of the radiation. Modulation deviation is
itmitedsto+ |S ikceiores0ekc, moO0TKetand -"120kc
channel spacing operation and to +5 kc for 20 kc
and 30 kc channels.
(b) The rf power output of a trans-
mitter shall be no more than required for satis-
factory technical operation considering the con-
ditions of its use.
(c) Only duly authorized radio oper-
ators or personnel working directly under their
supervision may tune or adjust a radio trans-
mitter.
(5) Check Transmitter
(a) Operational Check
The transmitter must be checked
for proper operation before the equipment can be
placed in service. Connect a dummy load lamp,
rf wattmeter or the regular mobile radio set
antenna to the ANTENNA receptacle on the front
panel. Set the HI-LO switch on the power supply
chassis to the HI position. Press the micro-
phone push-to-talk button momentarily and listen
for relay operation. The transmit-receive relay
on the power supply chassis and the antenna re-
lay on the transmitter chassis must operate.
Check for indication of rf power output. The
dummy load lamp should glow or the rf watt-
meter, if used, will show the rf power output.
If the regular mobile antenna is used, the trans-
mitter should radiate signals to receivers of
other sets on the same frequency.
CAUTION
Do not key the transmitter more thana
few seconds at a time while making
these operational tests.
If the operational test is satis-
factory, proceed to the next step. If there is no
indication of rf output, some _ troubleshooting
The simplified
functional diagram in this section shows the
must be done before proceeding.
overall operation of the radio set and gives the
step-by-step sequence of operations. The inter-
cabling diagrams trace the various circuits from
chassis-to-chassis. Schematic diagrams of each
chassis are included in the various sections of
the manual. With these diagrams, the technician
can understand how the radio set works and can
isolate troubles to a specific chassis or stage
thereof.
(b) Meter Readings
Refer to the alignment procedure in
the TRANSMITTER section of this manual. With
the HI-LO switch in the HI position check meter
readings against the values given in the FINAL
METER READINGS CHART. The transmitter
must be keyed to obtain readings. Use the
microphone push-to-talk button or the switch on
the Motorola portable test set. To check
readings consult the chart and set the switch toa
given position. Then key the transmitter just
long enough to observe the reading.
can be taken in any order. If the readings in
positions 2, 3, 4, 5 or 6 are below the minimum
values given, re-align the transmitter as de-
scribed in the alignment procedure. The reading
in the PA position is not too important at this
point, however, if it is above the maximum value
given, do not key the transmitter any more than
Readings
absolutely necessary.
It is advisable to follow the com-
plete alignment procedure at this point, since the
next step requires a repeak of the transmitter
adjustments to obtain full rf output.
(c) Loading to Antenna
Set the HI-LO switch to LO and load
the transmitter to the antenna as described in the
last three steps of the alignment procedure.
d. Deviation Check
FCC regulations require a deviation check
before a transmitter is placed in service. This
check is described in the TRANSMITTER section.
2. OPERATOR’S INSTRUCTIONS
a. lo Durny (ON Equipment:
Place the ON-OFF switch in the ON position.
The green indicator will become illuminated.
The receiver is now in full operation and the
transmitter filaments are ''on".
NOTE
If multi-channel transmitter and/or re-
ceiver is used, place frequency selector
switch in desired frequency position.
bi To Receive:
(1) Turn the VOLUME control to the full
clockwise position.
(2) Turn the SQUELCH control to the full
counterclockwise position.
(3) Adjust the SQUELCH control, by turning
the control slowly clockwise until the noise is
just squelched (cuts out).
beyond this point will increase the minimum
Turning the control
signal necessary to open the squelch circuit.
(4) Set the control head VOLUME control to
the desired speaker level with a received signal.
Ci To Transmit:
(1) Remove the microphone from the hanger
bracket and press the push-to-talk button. The
red indicator lamp will become illuminated, indi-
cating the transmitter is "on''. If a military or
noise cancelling type microphone is used, hold
the microphone at approximately a 30° angle
from the lips and speak clearly and distinctly
across the microphone in a normalor loud voice.
If a handset microphone is used, speak directly
into the mouthpiece of the handset. The TRANS-
MITTER CANNOT BE OVER-MODULATED BY
SPEAKING LOUDLY.
(2) To receive reply, release the push-to-
talk button. The red indicator lamp will go "off"
indicating that the transmitter circuits are no
longer energized.
be heard over the speaker and/or the handset
earpiece (if used).
The received reply may now
(3) When the transmission is completed,
release the push-to-talk button and hand the
microphone on the hanger bracket.
da" lo lurnsvOlF Pines. quipment-
Place the ON-OFF switch in the OFF po-
sition. The green lamp will be turned "off".
3. CIRCUIT DESCRIPTION
The operation of the radio set as a whole is
illustrated in the simplified functional diagram in
this section. Refer first to the SEQUENCE OF
OPERATIONS table for the various steps, then to
the components as identified on the diagram.
The diagram applies to both front-mount instal-
lations and rear-mount installations. The only
differences between these two types of instal-
lations are in the control head and dc input cir-
uit, The power supply,
receiver are the same for both installations.
transmitter and
Once the simplified diagram is clearly
understood refer to the POWER SUPPLY section
of this manual for full information on the tran-
sistor multivibrator and relay action. For de-
tailed description of the transmitter and re-
ceiver, refer to the TRANSMITTER and RE-
CEIVER intercabling
connections between the various chassis, refer
sections. For exact
to the intercabling diagrams in this section.
HoNAL DIAGRAM
mOE TAILS ALL
ED
4 RSE Hi B+ TO XMTR.
RECTIFIER PA PLATE
AND
FILTER
NETWORK
SWITCHED B+ TO RCVR,
RECTIFIER
AND
FILTER
NETWORK
XMTR. MULT.
18 ies XMTR. OSC.
BIAS TO XMTR.
PA GRID
RECTIFIER
AND
FILTER
NETWORK
T-R
RELAY CONTACTS
SEQUBN Cra O le OPERATIONS
“TURN-ON" OPERATION “TURN- OFF" OPERATION
i ON-OFF SWITCH SET TO ON POSITION. . P-T-T BUTTON RELEASED.
| . FRONT—MOUNT-SWITCH APPLIES DG TO . TRANSMIT —RECEIVE RELAY AND
raeavaele RADIO SET. GREEN LAMP GOES ON, ANTENNA RELAY RELEASES.
BATTER REAR-MOUNT~SWITCH ENERGIZES "A" . TRANSMITTER OFF, RECEIVER BACK IN
RELAY. RELAY APPLIES DC TO RADIO OPERATION. RED LIGHT GOES OUT
SET. GREEN LAMP GOES ON, ("STANDBY “ CONDITION.
FILAMENTS ENERGIZED. TRANSISTOR
MULTIVIBRATOR OPERATES. RECEIVER IN
FULL OPERATION ("STANDBY" CONDITION),
MIC, P-T-T BUTTON PRESSED,
TRANSMIT-RECEIVER RELAY AND
ANTENNA RELAY OPERATES
|
TRANSMITTER ON AIR. RECEIVER MUTED.
RED LIGHT ON ("ON-THE-AIR" CONDITION).
,
— VEHICL
Simplified Functional Diagram
Motorola No. 63E856476-A
11/5/59-RCS
C. To Transmit:
(1) Remove the microphone from the hanger
bracket and press the push-to-talk button. The
red indicator lamp will become illuminated, indi-
cating the transmitter is "'on''. If a military or
noise cancelling type microphone is used, hold
the microphone at approximately a 30° angle
from the lips and speak clearly and distinctly
across the microphone in a normalor loud voice.
If a handset microphone is used, speak directly
into the mouthpiece of the handset. The TRANS-
MITTER CANNOT BE OVER-MODULATED BY
SPEAKING LOUDLY.
(2) To receive reply, release the push-to-
talk button. The red indicator lamp will go "off"!
indicating that the transmitter circuits are no
longer energized. The received reply may now
be heard over the speaker and/or the handset
earpiece (if used).
(3) When the transmission is completed,
release the push-to-talk button and hand the
microphone on the hanger bracket.
d- To Turn "OFF" the Equipment:
Place the ON-OFF switch in the OFF po-
sition. The green lamp will be turned "off".
3. CIRCUIT DESCRIPTION
The operation of the radio set as a whole is
illustrated in the simplified functional diagram in
this section. Refer first to the SEQUENCE OF
OPERATIONS table for the various steps, then to
the components as identified on the diagram.
The diagram applies to both front-mount instal-
lations and rear-mount installations. The only
differences between these two types of instal-
lations are in the control head and dc input cir-
cuit. The power supply, transmitter and
receiver are the same for both installations.
Once the simplified diagram is clearly
understood refer to the POWER SUPPLY section
of this manual for full information on the tran-
For de-
tailed description of the transmitter and re-
ceiver, refer to the TRANSMITTER and RE-
CEIVER sections. For intercabling
connections between the various chassis, refer
to the intercabling diagrams inthis section.
sistor multivibrator and relay action.
exact
FRONT MOUNT
INSTALLATIONS
ANTENNA RELAY
CIRCUIT
NOTE
d THIS 1S A SIMPLIFIED FUNCTIONAL DIAGRAM
SEE SCHEMATICS FOR EXACT DETAILS ALL
RELAYS SHOWN DE ENERGIZED
O *
NS
TH 8
* ckene | RECTIFIER : =A As eee
IF
= CONTROL NS REVERSING | AND |
= wtih HEAD x TERMINAL FILTER |
=} BATTERY |
= LP) NETWORK
Ga riavnc| ice KA | |
<]
a | |
a Me 19, POWER | |
SUPPLY PLUG | SWITCHED B+ TO RCVR.
/ 7 RECTIFIER l
AND XMTR. MULT.
FILTER
ANTENNA Q2 NETWORK |
RED RELAY i |
LAMP. ON
CONTROL (| XMTR. Si Gy. al a a Oe ae
HEAD FILS. XMTR. OSC
— VEHI R N : f
—— VEHICLE GROUND 15 RECTIFIER A
/ AND BIAS TO XMTR.
FILTER PA GRID
TRANSMIT-
Li NETWORK |
/ RELAY TSR
T-R RELAY RELAY CONTACTS
REAR MOUNT aN CONTACTS
INSTALLATIONS is
O
RGVR 8°
PON oT gove
OVEN go De
2 “ i SEQUENCE OF OPERATIONS
Be \ |
MIC “TURN-ON” OPERATION “TURN- OFF” OPERATION
P-T-T eee |e eee ce |e ee i ge 3)
\ BUTTON
—<
| T-R RELAY
-o Se = a
= 12-VOLT 3 RELAY SROUND
POLARITY CONTACTS < 330 N . ON-OFF SWITCH SET TO ON POSITION. . P-T-T BUTTON RELEASED.
| REVERSING . _FRONT—MOUNT-SWITGH APPLIES DG TO . TRANSMIT —RECEIVE RELAY AND
= TERMINAL RADIO SET. GREEN LAMP GOES ON, ANTENNA RELAY RELEASES.
= BATTERY @ REAR-MOUNT~SWITCH ENERGIZES “A TRANSMITTER OFF, RECEIVER BACK IN
— <a ‘ RELAY. RELAY APPLIES DC TO RADIO OPERATION. RED LIGHT GOES OUT
Va PIN 9, POWER SET. GREEN LAMP GOES ON. ("STANDBY “ CONDITION.
SUPPLY PLUG FILAMENTS ENERGIZED. TRANSISTOR
Wh MULTIVIBRATOR OPERATES. RECEIVER IN
FULL OPERATION (“STANDBY“ CONDITION),
. MIC, P-T-T BUTTON PRESSED.
CONTROL Th
HEAD :
. TRANSMIT-RECEIVER RELAY AND
ANTENNA RELAY OPERATES
TRANSMITTER ON AIR. RECEIVER MUTED.
RED LIGHT ON ("ON-THE-AIR" CONDITION).
— VEHICLE GROUND
Simplified Functional Diagram
Motorola No. 63E856476-A
11/5/59-RCS
Jf
ANT. CONNECTOR
ON FRONT Bats
REVISIONS
TLN6155A 2-FREQ. |RCVR, TERM,
RCVR FILTER KIT |[BD. ON
ADDED
B+
FEEDER
Front Mount Radio Sets
Intercabling Diagram
Motorola No. 63E856474-D
11/5/59-RCS
e oy 7
"9
ey
@ -
CONTROL HEAD
s\
wi e ws OFF
TO UNGROUNDED 1
BATTERY TERMINAL +—{ ND © Q BLK 0 9 c hee i2vo0c
20a SMALL LUG Ch!
ON - OFF
SWITCH |
TO BATTERY GROUND Ca 9 BES | ae
LARGE LUG we a
tig
AI
PRE-AMPLIFIER DETAIL | 1
“PUSH-TO-TALK” mK MICROPHONE Pt os2 |
GRN
BUTTON ELEMENT DYNAMIC
a ELEMENT (a)
RO |
33
MICROPHONE RED | |
PRE—AMPLIFIER
s4 (REFER TO (7) |
“PUSH SCHEMATIC) 2 BLK-WHT
SWITCH l 4
NOTE:
THE JUMPER AGROSS R8 MAY OR MAY NOT P5 J2 |
BE IN THE CIRCUIT WHEN SHIPPED. (as
20
A
©. |
= |
° ° ° ° ° ° o—o FP 9» o_o 0-1 0 — o—p>i eae oN
BLK tt | | GRAY °
ee 0 0 0 Oe Oe lic 9 i ° i. aN
1
GRN ilar °. NOTE:
Co re mera se ee Oe a OO Oe 58 eG C= NS SS R4 IS PART OF CONTROL HEADS WITH
T tt °. 2 Bt MICROPHONE RECEPTACLE,
—o—— 0 —— et ee ee ee ee Lane ° °. ba
: aa ‘ E 4 BLK- WHT Nas
ri mé PLUG-IN MICROPHONE CABLE oS L 4
- = -
4 =
| 2-FREQ. SWITCH =F! WHT-GRN-
— - —
WIRED-IN MICROPHONE CABLE Wa (2-FREQ. MODELS ONL’ t!
7 eS s—— ps 1 ——_1 12 1 on 1 7 ‘ ccan-wat Ug
= BLK -
——s 31 1. —— 1s —_1- __1_1__1__141_1__1
GRN 1 1 CONTROL 2R3
1 ———— |) 1 I I I BF WHT- ORG
1 WHT
3—_ 1 1 ——_ » — 1. —__ 1 —__ 1 —__ 1 —_1—__ 1____ 1—___1-__—__
SPEAKER
TRANSMITTER
TRANSMITTER
TB
nis Reo-au J RED- BLU TOSVDC B++
|
HNo— ei Transistors }*70SVPC _@,—J
TRANSFORMER ;
POLARITY a +275voc or {2
REVERSING +200V0C
NLS Five RED-YEL RED-YEL 275v0C B+
NETWORK:
BLK Ee Z JET WORKS
REO- BLK
ere ee | ORG
PA SCREEN
:
POLARITY REVERSING TERMINALS
SHOWN FOR NEGATIVE BATTERY GROUND
(BLK TERMINAL TO ARROW)-
FOR POSITIVE BATTERY GROUND,
REVERSE THE TWO TERMINALS
(RED PIN TO ARROW)
GRN- RED
Bieta oe |
PA GRID BIAS
150VDC OSC, PLATE & SCREEN
vf
ANT. CONNECTOR
REVISIONS
REF.
SYMBOL CHANGE
LOCATION
ON FRONT ae
————_——-, @
cD-w2
é6 CHASSIS
o— SUFFIX
PA
P2
RF A 3
OUTPUT
> es) -WHT
a BRN-YEL
Greer trsy ban |
NETWORK
Mic DC+
BRN-BLU
— — —pFREQ. 2 OSC. CATHODE
—— | —— BRN-RED! = — —|}— — — —» FREG. 4 OSC. CATHODE
aso eee AUDIO —> se
Ls eee TO-TALK
SWITCHED B+
ST oe B+ 2
Sa ee eed | |
aan
@
<
m
eo
1
@
2D
2
PINS, METER PLUG
IES)
47-1/2W
R44
47-4/2W
(©)
B+ TO 2ND. LIMITER
NOISE AMPL. CATHODE
—— RCVR AuDIO
1) © ©O0 ©© © &
RCVR FILS 42V0C
C3
SPE SS SSS |
+2 i
a =-==-=--=--- = ——— —— — FREQ. 2 OSC. CATHODE
RECEIVER
[RECEIVER |
qd>w3
P3
-FREQ.
ER KIT
Front Mount Radio Sets
Intercabling Diagram
Motorola No.
11/5/59-RCS
63E856474-D
‘ ee |
»
‘
»
or etal barb ae ae
=!
> 2 |
‘ ul - 2S Ba) eal ha i»
: ee es
Vi a aa oes yn a =e
i
—-
pose 5 Say
»
=
= i:
i f : :
a
Pea
Hie
Jt
ANT. CONNECTOR
ON FRONT PANEL
REVISIONS
TLN6155A 2-FREQ,
RCVR FILTER KIT
Rear.Mount Radio Sets
Intercabling Diagram
Motorola No. 63E856475-C
11/5/59-RCS
PARTS LIST for Intercabling Diagram 63E856474-D
Al
cl
c2
c3
DP1l
DSs1
DS2
Fl
Ji
J2
J3
MK1
Pi
Pz
P3
P4
1V861317
23C855013
or 23B844927
23€855013
59C852603
65R4151
65K52482
1V855055
9B 16345
9C801050
1V854033
(“plug-in”)
or1V852400
("wired-in")
284474006
9B855112
AMPLIFIER, AF:
microphone pre-amplifier:
assembly; includes
1V859594 BOARD, circuit:
eyeleted assembly; includes
soldering lug terminals
Reference parts Cl, Ql, R5,
R6, R7, R8&
CAPACITOR, fixed: electrolytic;
tubular; 20 uf +100-10%; 25 vdew
tubular; 20 uf +100-10%; 25 vdcw
same as C2
CARTRIDGE, microphone:
magnetic; dynamic type; 175 ohm
impedance at 1 kc
LAMP, incandescent:
6-8 volt; .2 ampere; single
contact bayonet base; globular
glass; type 51
same as DS1
FUSE, cartridge: one time; paper
20 ampere; 250 volt; 2" long
x 9/16" dia
CONNECTOR, receptacle: female;
"assembly: includes mounting __
bracket and single contact,
coaxial connector
4 contact; polarized; round
molded black phenolic base;
chassis mounted, includes
4S7699 LOCKWASHER:
13/16" internal
2K81180 NUT, ring
19 contact; polarized; rectangular
mld. blk. phenolic base;
chassis mtd.; does not include
7B855113 BRACKET, connector
mtg., nor 64C855103 PLATE,
connector mtg. ; bracket and
plate must be ordered
separately
MICROPHONE, dynamic:
= palm type: contains transistor
amplifier and "push-to-talk"
switch; includes reference
parts Al, DPl, S4, W8
palm type; contains transistor
amplifier and "push-to-talk"
switch; includes reference
parts Al, DP1, S4, W4
CONNECTOR, plug:
“male; single contact; round bake-
lite wafer insulator; cable
mounted; connects to Trans-
mitter Antenna Relay Antenna
Connector
same as Pl except connects to
Transmitter Antenna Relay
Receiver Connector
same as P] except connects to
Receiver Antenna Connector
female; 2 contact; polarized;
round phenolic wafer insulator;
cable mounted; does not
include 15B855111 SHELL,
connector; shell must be
ordered separately
MOTOROLA
PART No.
28A 16370
48A 124317
17K892469
18K855108
18K855107
6R6336
6R6080
6R5581
6R5660
6R5621
6R488016
6R5550
40B858304
40A80248
40B857174
314890699
1V832063
1V855053
1K800193
1V854006
CONNECTOR, (cont'd)
male; 4 contact; polarized; round
molded phenolic insulator;
cable mounted; includes
41K838823 SPRING, cable
strain relief
TRANSISTOR:
type MN60; does not include
144861196 INSULATOR,
transistor: insulator must be
ordered separately
RESISTOR, fixed: carbon; +10%;
1/2 w; ins. ; unless otherwise stated
wire-wound; 4 ohm +2%; l w
variable: wire-wound; 20 ohm
420%; 2w
variable: wire-wound; 10K; 2 w
270 ohm; lw
4.7K
3.3K
180 ohm
10 ohm
33 ohm; 2 w
47 ohm
same as R10
SWITCH
toggle: spst
toggle: spdt; does not include
2S8382 NUT, machine:
15/32-32 x 9/16" hex;
2 required; nuts must be
ordered separately
NOT USED
push: dpst
BOARD, terminal:
6 screw terminals
LEAD, electrical:
Battery to Fuseholder; includes:
30K831572 CABLE, power:
single conductor; #10 ga. ;
stranded; ins. ; coded BLK;
2 ft. length required
29K832116 LUG, ring tongue:
for 3/8" stud and #10 wire
29K824154 LUG, ring tongue:
for #10 stud and #10 wire
LINE, RF transmission:
“assembly, Antenna to transmitter
Antenna Relay; includes:
1V855054 ASSEMBLY, cable
and plug: includes:
30B475378 CABLE, RF:
coaxial; RG-58A/U;
6" length required
Reference part Pl
Reference part Jl
Transmitter Antenna Relay to
Receiver Antenna Input;
includes:
30B475378 CABLE, RF:
coaxial; RG-58A/U;
24" length required
Reference parts P2, P3
CORD, microphone:
assembly, includes:
30K852742 CORD, coiled;
tinsel
41A852707 SPRING, strain
relief
11M2506 TUBING, extruded,
#9 BLK; 1" length req'd
MOTOROLA
PART No,
CORD, microphone: (cont'd)
294847033 LUG, terminal;
wire mounted, insulation
piercing; 8 req'd
CABLE, power:
30K831572 Single conductor, #10 ga.
stranded ins; coded black;
9 ft. length req'd does not
include 29K824154 LUG, ring
tongue; for #10 wire and #10
stud; lug must be ordered
separately
same as W5 except does not
include 29K832116 LUG, ring
tongue; for #10 wire and 3/8"
stud; lug must be ordered
separately
304825430 2 conductor; rubber covered;
each conductor; #18 ga.
stranded; 41" length req'd
CORD, microphone:
1V854034 assembly; includes:
30K852742 CORD, coiled;
tinsel
41A852707 SPRING, strain
relief
11M2506 TUBING, extruded;
#9 BLK; 2" length req'd
294847033 LUG, terminal;
wire mounted; insulation
piercing; 4 req'd
294847034 LUG, terminal;
wire mounted; insulation
piercing; 4 req'd
37K480513 SLEEVE, rubber
Reference part P5
NON-REFERENCED ITEMS
The following are replaceable parts which
do not appear on the intercabling diagram
LAMPHOLDER:
9A859619 single contact; miniature;
bayonet base
same as XDS1
FUSEHOLDER: single fuse mounting
67K892616 rectangular porcelain base;
chassis mounted; for fuse
2" long x 9/16" dia.
TLN6000A Installation Kit; includes the following
items:
1V859627 Cable Clamp Kit: includes:
42419376 CLAMP, cable: 4 req'd
357467 SCREW, tapping;
#8 x 3/8" plain hex; 4 req'd
1V849628 Mounting Hardware Kit: includes:
3S125947 SCREW, tapping:
#14 x 3/4" plain hex; 4 req'd
48119331 LOCKWASHER:
1/4" split; 4 req'd
REFERENCE
SYMBOL
MOTOROLA
PART No.
TLN6000A Installation Kit; includes the
following items:
1v84019 Noise Filter Kit:
includes:
8A821889 CAPACITOR, generato
hash filter; fixed:
paper tubular; .5 uf +20%;
150 vdcw; one lead
grounded; one lead
insulated; 2 supplied
6A4141 SUPPRESSOR, noise:
resistor; screw type
4S7670 LOCKWASHER: 1/4"
internal; 2 req'd
MOTOROLA
PART No DESCRIPTION
TCN6000AA (1-freq. with ''wired-
in'' microphone) ;
includes the following items:
1V852400 MICROPHONE (reference part
MK1)
38A857093 BUTTON, plug
37K 106352 GROMMET, rubber; for 7/16"
dia hole
TK611 Cable Kit: includes reference parts
Fl, XF1, W1 and the following items:
32A 880952 GASKET, fuseholder
1V474596 Mounting Hardware Kit, fuseholder:
| includes:
4A83863 WASHER, cushion:
2 supplied
38400465 SCREW, tapping: #10
x 3/4" slotted round head;
2 supplied
4S7658 LOCKWASHER: #10
internal; 2 supplied
481706 WASHER: 3/8'' x .203
x . 033"; 2 supplied
TCN6000AB (2-freq. with ''wired-
in'' microphone) ;
includes reference part S2 and
the following items:
1V852400 MICROPHONE (reference part
MK!)
38A857093 BUTTON, plug
37K 106352 GROMMMET, rubber: for 7/16"
dia hole
TCN6000AE (l-freq. with receptacle
for "plug-in" microphone) ;
includes reference parts J2, R4
and the following items:
4S7691 LOCKWASHER: 3/8"! internal
29R5279 LUG, soldering: 7/8"
TCN6000AF (2-freq. with receptacle
for "plug-in'' microphone):
includes reference parts J2, R4,
S2 and the following items
487691 LOCKWASHER: 3/8" internal
29R5279 LUG, soldering: 7/8"
Control Heads
‘Items which are common to all control
heads are listed first. Items which are
‘not common to all control heads are listed
under the model number of the particular
control head concerned.
Items common to all control heads
include reference parts DS1, DS2,
J3, P4, Rl, R2, R3, RY, Sl,
TBl, W5, W6, W7, XDS1, XDSz2,
and the following items:
NUT, machine: 15/32-32 x 9/16"
hex; 2 req'd
LENS, indicator: RED
LENS, indicator: GRN
LOCKWASHER: 3/8" internal
NUT, machine: 3/8-32 x 1/2" hex;
2 req'd
PLATE, connector mounting (back
cover) .
5 BRACKET, connector mounting
424855115 CLAMP, cable
26B857812 SHIELD, indicator lamp: 2 req'd
2 LOCKSCREW: 6-32 x 1/4" plain
hex; 6 req'd
36B855027 KNOB, control: 2 req'd
Each control head model includes the items
n for the model, plus items listed above.
Microphones
Items which are common to all microphones
are listed first. Items which are not common
to all microphones are listed under the model
number of the particular microphone
concerred.
Items common to all microphones
include the following parts:
NOTE
These items are part
of reference part MK1
(both 1V854033 and
1V852400).
1V854005 BACK HOUSING AND HANG-UP
STUD ASSEMBLY
35124693 LOCKSCREW: 6-32 x 1/4"; Phillips
round head; 3 req'd
424852710 STRAP, strain relief
38A 852699 BUTTON, push
15D852566 FRONT HOUSING
13B852703 GRILLE
35A852701 CLOTH, grille
32B852702 GASKET, rubber
144857138 INSULATOR: used for insulating
printed circuit assembly
424852705 CLAMP, used for securing
microphone cartridge
144857137 INSULATOR: used between clamp
and microphone cartridge
4K852762 WASHER, insulating; used as a
spacer
38127924 LOCKSCREW: 6-32 5/16";
Phillips round head
REFERENCE MOTOROLA
SYMBOL PART No
38127481
48400386
DESCRIPTION
part MK] (both 1V854033 and
1V852400),
SCREW, machine: 6-32 x 7/8";
Phillips round head; 2 required
LOCKWASHER: #6 split; 2 required
lv 16241
Each microphone model includes
the items shown for the model,
plus items listed above
1V852400 Microphone
("wired-in" type)
includes reference part MK1
(1V852400)
TU353A Microphone
("'plug-in"' type)
includes reference part MK1
(1V 854033) and the following
items:
Mounting Kit, microphone:
includes:
64485596 microphone hang-up
3S122830 SCREW, tapping
#8 x 1/2"; 2 req'd
“PUSH-TO-TALK"
[CONTROL HEAD]
MICROPHONE
ELEMENT GRAY-GRN
VIOLET
x
CONTROL CABLE
es BRN-YEL
si QOFF
= GRN-WHT VEHICLE
MIGROPHONE ant —_ | Os Qs GROUND
cane i ee ye eae
SCHEMATIC) PRE-AMPLIFIER DETAIL (2-FREQ. MODELS ONLY) —— WHT=GRN_ ___ ks SF BRN-WHT =
cet Ae $2 BLK 7
PUSH sO —- OH
SWITCH GRN—WHT BRN-BLU
o— — Shar — fess — | = aad I we D—wa
CONTROL HEAD JUMPER TABLE Bean F2 BLK)
YNAMIC
ELEMENT | <56 | i
F
ves (see NOTE) 208
EQUIPMENT USED* JUMPERS SQUELCH 20 Co) i 0
CONTROL
" CIRCUIT OPERATION 4 (— ws
NO
Mic. | HANDSET | HANG-UP | oum-caLL jul |) Jue Ju3 oRG REO
BOX 22 CH =
BLK . POSITIVE OR
32 Co) (. DISCONNECT BLK (W6) eh GROUND
Basic operation. Radio Set Speaker in USED USED ares JUMPER, S—H
ircuit at all times iL <54 . CONNECT (W7 TWEEN
ele naan) oer THE JUMPER ACROSS R8& MAY OR MAY ins e | cee eee when ater
A RY TAP ON IGNITION
Handset picked up connects audio to NOT BE IN THE CIRCUIT WHEN SHIPPED. 7) <55 see ON IGNITIO!
handset earpiece 104 * 2d ze
°
Handset picked up connects audio to
: paige WINE 2 GRN
ti.
handset earpiece, speaker in circui he is —) OPTIONAL ACCESSORIES
RED 5 BLU PARTIAL DIAGRAM OF
Audio to speaker when microphone is ° ° ° ° ° ° = 00 == Tee ie oo rae Nowe RCVR. QUIK—CALL UNIT
removed or hung up. Alarm circuit BLK Vt GRAY ° R4 IS PART OF CONTROL HEAD
energized. "Quik-call" disabled. a eat a 5 ah mada Se Tick Ga eae a aie] CG 1 JAG? ! nea S TON ~ WITH MICROPHONE RECEPTACLE 40
Ge Oa Og a SRN Ge pe oe ols o—p> 3 >—HHT o ° ° IN
: : sii NS °
Audio switched from speaker to handset STi V4 BLK °. 5 SS 50
earpiece. Alarm circuit energized 0 Oe Oa Oe FRSC Sm 2 NN SS Ss °. BLU At
"PLUG-IN" MICROPHONE CABLE—] 4 OO aa ae al
Audio switched from "'quik-call" to wit (= ~S RED RED
speaker and handset. Alarm circuit bs —s
energized. - == | WHT WHT
BRN—WHT
“Quik-call' used for alarm purposes only. it a wio =
Audio to speaker at all times. bn | "PLUG-IN" MICROPHONE CABLE—{
i s— —1—— $1 — 1 82_, —_ 1 —_ 11 11 oad BRN-BLU_
EPD-1516-0 - hk BLK
= SS er : oro SEE NOTE Tu3 ae
rere SUPPLIED WITH
3 ——. 8 ——_ 1 5» —— 8» ——— 8 ———— 82 ——__ 1 —_—__ 1 ——_1 45 HANG-UP BOX ORG
* X= item used U : : ' . : U : : im PLACING HANDSET OR MICROPHONE
--- = item not used ' A A ‘ A Lesh 1 ’ pjallbdt y} 43 IN HANG—UP BOX MOVES YEL
OS I CONTACTS TO LEFT.
SPRING ACTION RETURNS
|e CONTACTS WHEN HANDSET as
| OR MICROPHONE IS PICKED UR
VOLUME 46
CONTROL
Re
20
SPEAKER BRN
CONTROL HEAD BACK PANEL BLK
U2 ,U3,u4 reel
L
INSERT UNDER SCREW ON
BACK PLATE OF CONTROL HEAD
TRANSMITTER
SHIELD TRANSMITTER
SS CONTROL CABLE
S a ‘a ae
Ji -
ANT. CONNECTOR
mie!
OUTPUT
FOR IGNITION
SWITCH CONTROL:
{. DISCONNECT BLK (W6)
JUMPER,S-H
2. CONNECT (W7) BETWEEN
“s" RELAY TERMINAL AND
55 ACCESSORY TAP ON IGNITION
SWITCH.
(2 VOLT BATTERY VIOLET
NEGATIVE of es ee
NEGATIVE GROUND <f GRN-YeL_ ff
fy w nN >
> Nn nN
il il
o °
& Ia
{i0|1[1]
nm
i=)
WHT
NETWORK
| P BRN-YEL
Mic DC+
cp-ws
Tek
= ™ RED-BLU Lo) RED- BLU Tosv0c. et+ ON FRONT PANEL
6 —- |
BLK ae 12V0C ED ele TRANSISTORS eee = >)
48 TRANSFORMER
TAN POLARITY P +275VDC OR
24 REVERSING +200 VOC
_—| VIOLET BRAID TERMINALS FILTER RED -YEL @ RED-YEL 275V0C B+ Lt
BLK BLK eo NETWORKS
{<= | TAN 94 IZ
GRN-WHT va PO's] a
le — — Os Qs Yael q Q ' (3) PA SCREEN
"1
"a" C POLARITY REVERSING TERMINALS REVISIONS
(——}-------- SHOWN FOR NEGATIVE BATTERY GROUND
30 pitch li, Tay (BLK TERMINAL TO ARROW)- '
mS I GRN- RED
SoS aH FOR POSITIVE BATTERY GROUND, (43) PA GRID BIAS :
BRN-BLU REVERSE THE TWO TERMINALS | ; 5 RES S =
4k» = SS | we (RED LEAD TO ARROW ) | RED- BLK RED- BLK é EE aia eet ey Oe ees
BLK QD— wa ; (6) 150VDC OSC. PLATE & SCREEN ( RCVR FILTER KIT |BD. ON POWER
| P2 ADDED SUPPLY
<56 \ BLK-ORG
| Q \ (8) P3
F2 (
YEL ils o !
20 (SEE Nore) T f, 20A ne
ap
@— ws | i °
!
= ' RF
1
BLK-WHT ! BLK-WHT @ BLK-WHT
GRN
ss
| OPTIONAL ACCESSORIES
PARTIAL DIAGRAM OF
| RCVR. QUIK— CALL UNIT BRAID (2)
ble a) | Se BRN BLU eee eae § Se eee ERE te TOSC4 CATHODE
1S a ——_BRNERED __ _— —_ | =. REG. 1 OSC, CATHODE
RN
on BLU BLU rn ered Mic AUDIO —»> La atk 4 — S8N
; = Nats Gaion Te
WHT WHT 3 gq LVEL-GRN 4 Pa
fics ‘amas me |
RED SHIELDED OF 07 |
BRN—WHT ee ee FREQ. 1 20 = | R40 BRN-WHT
_———— — ~<e = (1) Cc — — ——I— — — -® FREQ.{ OSC. CATHODE
: inet eee SRE | a oe
prn-siu_ ORG SHIELDED So eee moe Vad BBY!
Sree Cae | prio
q
ORG 14g. 4 WHT- ORG SWITCHED B+ |
PLACING HANDSET OR MICROPHONE
IN WANG—UP BOX MOVES ve ons SQueLcn SS ee
SPRING ACTION RETURNS BLU
CONTACTS WHEN HANDSET GRN (jc AS ra RCVR AUDIO
gu3
SUPPLIED WITH
HANG-UP BOX
ag
RED
6+
8+ TO 2ND. LIMITER
NOISE AMPL. CATHODE
!
BLK-WHT
BRN
oe ee eI
x
D
z
2
(=
0
o
fe)
x
TORCKONCIONCIONGHS
| 46 OR MICROPHONE IS PICKED UR |
39 \
|
ee | RCVR FILS 42VDC | GRN-YEL
SPEAKER RN na | = |
Sr ea Atel
sot = 7d
| se 20 Pe a et ed Eas -® FREQ. 2 OSC. CATHODE
TB
fk 47 RECEIVER
45
INSERT UNDER SCREW ON
BACK PLATE OF CONTROL HEAD
I Rear. Mount Radio Sets
| Intercabling Diagram
] Motorola No. 63E856475-C
) 11/5/59-RCS
\
\\F
PARTS LIST for Intercabling Diagram 63E856475-C
MOTOROLA
MoT
PART Ne. Ane DESCRIPTION MOTOROLA REFERENCE | MOTOROLA REFERENCE | MOTOROLA BrecrinTion
REFERENCE MoT
PART No SYMBOL PART No. SYMBOL PART No. PIR DES
DESCRIPTION
SYMBOL PART No
RELAY, armature:
59K858480 12 y dc, contact arrangement, 40B858304
1 form "A"; coil resistance 40A80248
76. 5+93.5 ohm
CORD, microphone:
1V854006 includes:
('wired- 30K852742 CORD, coiled; 7
in" mic.) tinsel; 4 conductor tony nS Co eee CNN See es includes reference parts J6, R4,
414852707 SPRING, strain heads are listed first. Items which are S2land the following items
relief not common to all control heads are 487691 Loc ASHER: 3/8" internal
11M2506 TUBING, extruded, Pte ace mene enone | numben Re nEre 29R5279 LUG, | soldering: 7/8"
#9 BLK; 1" length req'd particular control head concerned.
SWITCH, CABLE ASSEMBLY, (cont'd)
toggle: spst 1V859441 assembly consisting of "in line"
toggle: spdt; does not include fuseholder with attached
258382 NUT, machine: connecting leads; includes
15/32-32 x 9/16" hex; 2 req'd reference part XF1 and the
nuts must be ordered separatel following items:
NOT USED 29K824456 LUG, ring tongue:
Control Heads TCN600JAF (2-freq. with receptacle
for "plug-in" microphone)
AMPLIFIER, AF:
1V861317 microphone pre-amplifier:
assembly, includes:
1V859594 BOARD, circuit:
eyeleted assembly; includes:
MICROPHONE, dynamic:
1V854033 palm type; contains transistor
("plug-in") amplifier and "push-to-talk"
40B857174 push: dpst
23C855013
235844927
23€851013
59C852603
soldering lug terminals
Reference parts Cl, Ql, R5,
R6, R7, R8
CAPACITOR, fixed: electrolytic;
tubular; 20 uf +100-10%; 25 vdcw
tubular; 24 uf +100-10%; 25 vdcw
same as C2
CARTRIDGE, microphone:
magnetic; dynamic type; 175 ohm
impedance at 1 kc
LAMP, incandescent:
or 1V852400
('wired-
in")
9C801050
Switch; includes reference
parts Al, DPl, S4, Wll
palm type; contains transistor
amplifier and "push-to-talk"
Switch; includes reference
parts Al, DPl, S4, W10
CONNECTOR, plug:
female; 19 contact; polarized;
rectangular; molded mica
filled phenolic base; cable
mourted; connects to Power
Supply; does not include the
following component parts
314890699
1V832061
BOARD, terminal:
6 screw terminals
CABLE ASSEMBLY, special purpose:
includes reference part Pl and
the following items:
30C830032 CABLE: 12
conductor; stranded, ins. ;
leads; shielded; black plastic
covered; 17 ft. length req'd
29K890418 CONNECTOR, plug
male; single contact; pin
type; cable mounted; coded
for #10 stud and #18 wire
29K890406 CONNECTOR,
plug: male; single contact;
pin type; coded #6
LEAD, electrical:
_ 1v859428 includes:
10M488285 WIRE, electrical:
#20 ga. ; stranded, ins. ;
coded GRN-WHT; 68"
length required
29K890405 CONNECTOR,
plug: male; single contact;
pin type; cable mounted;
coded #5
294847033 LUG, terminal;
wire mounted; insulation
piercing; 8 req'd
1V854034 includes:
("plug-in" 30K852742 CORD, coiled;
mic.) tinsel; 4 conductor
414852707 SPRING, strain
relief
11M9578 TUBING, extruded;
#8 CLEAR; 2" length req'd
294847033 LUG, terminal;
wire mounted; insulation
piercing; 4 req'd
294847034 LUG, terminal;
258382
61B859620
61K859621
487691
288364
Items common to all control heads
include reference parts DS1, DS2,
32, J3, J4, J5, Ri, R2, R3, RY,
$1, TB1, XDS1, XDS2, and the
following items:
NUT, machine: 15/32-32 x 9/16"
hex; 2 req'd
LENS, indicator: RED
LENS, indicator: GRN
LOCKWASHER: 3/8" internal
NUT, machine: 3/8-32 x 1/2" hex;
2 req'd
Microphones
Items which are common to all microphones
are listed first. Items which are
not common
to all microphonesjare listed under the model
number of the particular microphone
concerned.
Items common to all mi
crophones
include the following parts
NOTE
These items are part of
SEER Gaavole =e ae, hick aa " 4 : : + ke re € part MKi (both
vo ampere; single which must be ordere #18 29K824456 LUG, ring tongue: ane pac unted emculation 644857162 | PLATE, connector mounting (back 1VB54033 and 1V852400).
contact bayonet base; globular separately also includes: for #10 stud and #20 wire piercing; 4 reqid cover)
lass; type 51 15B800676 SHELL, connector i 37K480513 SLEEVE, rubb
ov = ye ect ee the following connectors Sa ee ET lett? 38122518 LOCKSCREW: 4-40 x 3/16" plain 1V854005 BACK HOUSING AND HANG-UP
ae , which are the same as GABLE; power: Pi hex head; 2 req'd STUD ASSEMBLY
FUSE, cartridge: she above part number 424858471 consists of a brass strap 2-3/4" 38124542 LOCKSCREW: 6-32 x 3/4" plain 35124693 LOCKSGREW: 6-32 x 1/4"; Phillips
@5usdea | ans Hes]: glace; l.amperes:250-V 144800673 INSULATOR, 29K890418 except for long x 5/8" wide x .015" hex head; 4 req'd roundlhead; 3 req'd
65K52482
9B855150
SoS See S Beiap2 SCREW 86-32) 1/2; oie « 1ya59442 | Relay Jumper; includes: 4K 852762 oc eee a
9K82810 2 contact; rectangular molded 2 required Bee ean 52 10M370 WIRE, electrical: FUSEHOLDER: Each control head model includes the items es Be | om Bi -
black bakelite insulator; 28A474006 male; coaxial; round bakelite single conductor; #12 ga. ; 9K847 158 cable mounted; male and female shown for the model, plus items listed above. 3127924 LOCKSCREW: 6-32 x 5/16"; Phillips
Bisse Se wafer insulator; cable mounted : stranded; ins. ; coded BLK; retainer; single fuse mounting; oa = ee ot i eat BS
9B16345 4 contact; polarized; round same as P2 also eneludes: 4" length req'd includes #18 ga. wire leads, Cae): nw oe els hohe , Pi)
: cia 424893468 CLAMP, cable: 8 a 38127481 SCREW, | machine: 6-32 x 7/8
molded black phenolic base; same as P2 ‘wrap around" strain Z9K845081 LUG, slotted tongue stranded, AAENC coded TCN6001AA (1-freq. with "wired- Eimes round head; 2 req'd
chassis mounted; includes: 28A 16370 male; 4 contact; polarized; palies for #10 stud and #12 wire; BRN; length 68 everal for in'' microphone) ; 45400386 LOCKWASHER: #6 split; 2 req'd
See es eee Se Fal eee 424893464 HOOK, "Ss": 2 Bae DORIA lone cca nice ae 2User includes the following items: |
13/16" internal 41K&38823 SPRING, cable ehvain celies i 1V847414 Ignition Switch Control: includes includes reference part Fl 1V852400 MICROPHONE (reference part Each mifrophone model includes
2K81180 NUT, ring stra relief 294824151 LUG, slotted 10M430 WIRE, electrical: 1V859445 includes reference parts Kl, W4, MK1) the items shown for the model,
1-1/4" long x 1/4" dia.
one time; paper; 20 ampere; 250 V
2" long x 9/16" dia,
CONNECTOR, receptacle: female;
assembly: includes mounting
bracket and single contact,
coaxial connector
9 contact; polarized; round
molded black phenolic
insulator saddle mounted
same as J2
LEAD, electrical: jumpe
"for reference only
for reference only
for reference only
for reference only
48A 124317
1/2 w; ins. ; unless otherwise atated; length andone 4 ft. length 1V855053 includes: 15C861390 COVER, mounting 1v852400 MICROPHONE (reference part ; ,
17K892469 wire-wound; 4 ohm #2%; 1 w eee 8 1V855054 LINE, RF board MK1) POE os aes tak, !
18K855108 variable: wire-wound; 20 ohm 29K824154 LUG, ring tongue: transmission; includes: Ta 384857093 BUTTON, plug 4 " an e following
: "
420%; 2 w for #10 stud and #10 wire 30B475378 ee 37K 106352 GROMMET, rubber: for 7/16 1V16241 An 5
18K855107 variable: wire-wound; 10K; 2 w 29K830073 LUG, ri | CABLE, RF: coaxial; dia hole 624 ounting Kit, microphone
Baesse Saale oe Ate eee ee RG-58A/U; includes reference parts F2, Kl, W1 to W7, includes:
ohm; for 5/16" stud and y rant ‘ - 2 :
6R6080 4.7K aa 6" length req'd and the following items: TCN6001AE (1-freq. with receptacle ee 596 BRACKET, microphone
6R5581 3.3K Reference part P2 for "plug-in" microphone) ; aeB-UP
6R5660
6R5621
6R488016
6R5550
connector shell: small
14B800678 INSULATOR,
ecnnector shell: large
42A800667 CLAMP, cable
42A800669 CLAMP, cable
4A11722 WASHER, "'C"'
44800671 WASHER
3B800681 SCREW, connector
retaining: includes knurled
knob
3S7209 SCREW, 6-32 x 1/8;
2 required
TRANSISTOR
type MN60; does not include
144861196 INSULATOR;
insulator must be ordered
separately
RESISTOR, fixed: carbon; +10%;
180 ohra
10 ohm
33 ohm; 2w
47 ohm
same as R10
coding as indicated:
Part No. Code#
29K890419 19
29K890420 20
29K890421 21
29K890422 22
29K890427 27
29K890428 28
29K890429 29
29K890430 30
tongue: for #10 stud and
#10 wire
1V832062 CABLE ASSEMBLY,
includes:
30K831572 CABLE, power:
single conductor;
stranded; insulated;
coded BLK; one 17 ft.
thick; processed and plated
1V859446 includes:
30K8 13233 CABLE, power:
single conductor; #10 ga. ;
stranded; ins, ; coded RED;
5 ft. length req'd
29K830073 LUG, ring tongue
for 5/16" stud
29K824154 LUG, ring tongue
for #10 stud
LEAD, electrical:
single conductor; #20 ga.
str. ; ins. ; coded BLK;
6 ft. length req'd
29K824456 LUG, ring tongue:
for #10 stud and #20 wire;
2 req'd
LINE, RF, transmission:
Reference part J1
1K800193 includes:
30B475378 CABLE, RF:
coaxial RG-58A/U; 2 ft.
length required
Reference parts P3 and P4
NON-REFERENCED ITEMS
The following are replaceable parts
which do not appear on the intercabling
diagram
LAMPHOLDER:
94855117 single contact miniature bayonet
base
same as XDS!
W5, W6, and the following
items:
14B858470 BOARD, mounting;
molded phenolic
42A858474 RETAINER, fuse:
(top)
424861384 RETAINER, fuse:
(botton, closed end)
1V859447 INSTALLATION KIT: includes;
388153 SCREW, tapping:
#8 x 3/4" plain hex head;
3 required
387542 SCREW, tapping:
#8 x 3/8" slotted binder head;
4 req'd
42A 19376 CLAMP, cable:
4 req'd
37K107234 GROMMET, rubber
36B855027
7B855239
1V859999
KNOB, control: 2 req'd
BRACKET, control head mounting
MOUNTING HARDWARE KIT:
includes:
4K847649 WASHER, fiber:
2 req'd
4S7670 LOCKWASHER: 1/4"
internal; 2 req'd
3S129304 SCREW, machine:
1/4-20x 1/2" slotted oven
head, 2 req'd
384857093
37K 106352
BUTTON, plug
GROMMET, rubber; for 7/16" dia
hole
TCN6001AB (2-freq. with ''wired-
in'' microphone) ;
includes reference part S2 and
the following items!
487691
29R5279
includes reference parts J6, R4
and the following items:
LOCKWASHER: 3/8" internal
LUG, soldering: 7/8"
424852710 STRAP, jstrain
38A852699 BUTTON, push
15D852566 FRONT HOUSING
13B852703 GRILLE
35A852701 CLOTH, {grille
32B852702 GASKET) rubber
144857138 INSULATOR: used for insulating
printed circuit assembly
424852705 CLAMP,| used for securing
micraphone cartridge
144857137 INSULATOR: used between clamp
plus items listed above
1V852400 Microphone
(“wired jn" type)
inclu€es reference part MK1
(1¥852400)
TU353A [Microphone
("'plug-ig" type)
35122830 SCREW, ta
#8fx 1/2"; 2 req'd
pping
CE055
AA
TA2Z35W-R2 RECEIVER
MODEL CHART
MODEL
NUMBER
NUMBER OF
FREQUENCIES
CHANNEL
SPACING
TRB1080AC/
TA235W-R2
TRB1080AB/
TA235S
TRB1080AD/ 2
dd Ee
TA235X
TA235X-R2
1. DESCRIPTION
a. Application
The receivers listed in the model chart are
designed to receive FM signals on one (or two)
MOTOROLA INC.
Engineering Publications
11/5/59-RCS
4501 W. Augusta Blvd.
pag le
RECEIVER
fixed, crystal-controlled frequencies in the 25-
54 mc band, The receivers obtain operating
voltages from the power supply which is part of
the overall radio set.
b. Design
The receiver incorporates a double-conver-
sion superheterodyne circuit. The chassis has
15 tubes and 17 tuned circuits, excluding the
plastic-sealed circuits of the PERMAKAY IF
filter. The IF wave filter is the major factor in
determining the signal reception bandwidth. On
models designed for 20 kc channel spacing opera-
tion the signals are attenuated -100 db at +15 kc.
On 40 kc models the signals are attenuated -100
db at +32 kc. On 120 kc models the attenuation
is -100 db at +120 ke.
Cy . basic Receiver Circuitry
The basic receiver circuit consists of the
following stages: an RF amplifier, a first local
oscillator, a first mixer, a first IF amplifier, a
second local oscillator, a second mixer, three
second IF amplifiers, two limiters, a discrimi-
nator and two stages of audio amplification.
d. Two-Frequency Models
is the same
except for
The two-frequency receiver
as the single-frequency receiver
the addition of another first oscillator and
control crystal. Two-frequency models re-
ceive signals on two specific, crystal-controlled
frequencies in the band. Only one frequency
COMMUNICATIONS DIVISION
Chicago 51, Illinois
68P854950-E
GUARANTEED PERFORMANCE SPECIFICATIONS
MODEL NUMBER TRB1080AB/TA235S, TRB1080AA/TA235W, TA235XeeTA235XeR2
TRB1080AD/TA235S-R2| TRB1080AC/TA235W-R2
SEE EG runVicieys -100 db at #15 ke -100 db at +32 ke -100 db at +120 ke
29 including 12 29 including 12 20 including 3
plastic-sealed in plastic-sealed in plastic-sealed in
Permakay filter Permakay filter Tri-K filter
SENSITIVITY Less than 0.30 microvolt for 20 db quieting; 50 ohms rf input impedance
CHANNEL SPACING
MODULATION
ACCEPTANCE
TUNED CIRCUITS
FREQUENCY Oven type crystal maintains oscillator stability within +0. 0005% from
STABILITY AND -30° C. to +60° C, ambient (+25 C. reference)
TEMPERATURE
RANGE
SPURIOUS AND More than 100 db
IMAGE REJECTION
SQU ELCH Noise compensated type, adjustable sensitivity, threshold
sensitivity of 0.10 microvolt
TUBE COMPLEMENT
AND FUNCTION
6AK5 - RF amp. 6CB6 - 2nd IF amp.(1) 6AL5 - discriminator
*6CB6 - oscillator 6CB6 - 2nd IF amp.(2) 6BH6 - noise amp.
6AB4 - lst mixer 6CB6 - 2nd IF amp.(3) 6C4 = noise rect.
6BH6 - lst IF amp. 6BH6 - lst limiter 6679/
6679 / 6BJ6 - 2nd limiter 12AT7- audio and
12ZAT7 - 2nd osc.-mixer squelch amp.
*two for 2-frequency models 6AQ5 - audio output
2 watts to a 3 ohm speaker at less than 10% distortion
AUDIO! OUTEUE
AUDIO RESPONSE
SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE
From +1 db to -8 db of 6 db/octave de-emphasis characteristic from
300-3000 cps
can be received at a time. The two-frequency the #2 local oscillator. The F1-F2 switch is part
receivers are designed for operation with of the control head in mobile radio sets,
a frequency separation between channels as
great as 120 kc. without any change in perform- e. Chassis Complement
ance specifications. An external switch is used
to select frequencies. The switch is connected Each receiver consists of a basic chassis
into the cathode circuits of the two first local and a number of other items depending upon the
oscillator stages. In the Fl position the switch frequency range, number of operating frequen-
grounds the cathode of the #1 oscillator, per- cies and channei spacing operation. The re-
mitting that stage to operate normally. At the ceivers are factory assembled from the sub-
same time it opens the cathode of the #2 oscil- assemblies to form a compact single unit. The
lator to disable the #2 stage. Inthe F2 position items included in each receiver are summarized
the switch reverses the connections and selects in the following chart.
**CRYSTAL/(S)
ee REQUIRED
MODEL
NUMBER FREQ. BASIC CHASSIS *COIL KIT
a : ENS
fe Pa eae lie)
ala ~ 4
©. (Gg oe eee ca ed Ae eS ok | Gaye
Pe alc | in Wan |\ ae [be SHR On etal NO ere ect
P| Ni Wotton 5 | 5 s| x 5 | 5 =ji:| nes ey eee
= N cal om HH HH FH HH HH al a} fad Gs
TRB1080AA /
TA235W x x 1
TRB1080AC/
TA235W-R2 x x 1
TRB1080AB/
TA235S
TRB1080AD/
TA235S-R2
TA235X
TA235X-R2
l used
~*~
MT
2 =2used
* Coil kit designations include an L,M,H or HH suffix to indicate frequency range:
L = 25-30 mc, M = 30-40 mc, H = 40-50 mc, HH = 50-54 mc
*%* The crystal used with the radio set depends upon the operating frequency:
RM/RP-14A is for 25-40 mc
RM/RP-15A is for 40-54 mc
2. OPERATION
a. Stage Analysis
This receiver operates in accordance with
basic FM receiver operation theory. The stage
analysis given in these instructions is but a brief
summary of the salient points. To follow the
discussion refer to the block diagram included in
this section of the manual. This diagram shows
stage-by-stage signal flow and operating fre-
quencies.
b. RE Amplifier
The carrier signals received at the antenna
are coupled to the grid of the RF amplifier by the
impedance-matching network in the input circuit.
The RF stage provides some amplification of the
signals, however, its main purpose in the cir-
cuit is to improve sensitivity and selectivity.
The gain of this stage is designed to provide the
otpimum signal-to-noise ratio in the signals sent
to the first mixer. In the output of this stage
three hi-Q, critically coupled tuned circuits pro-
vide very high selectivity in the signals which
pass on to the mixer.
Cr First Oscillator and Mixer
The first oscillator generates a signal of the
correct frequency for direct injection into the
mixer without multiplication. This frequency is
heterodyned with the incoming rf carrier in the
first mixer stage. The difference between these
two frequencies is used asthe mixer output. This
output is a 5.5 me. signal which carries the
modulation originally impressed on the incoming
rf carrier.
The local oscillator frequency is above the
rf carrier in sets tuned to the 25-40 mc. range.
The local oscillator is below the RF carrier
when the receiver operates in the 40-54 mc.
range. These frequency relationships can be
expressed as follows:
For the 25-40 mc. range:
fir a
oscillator
frequency
first mixer
output
(first IF)
RE pcanmenr
frequency
For the 40-54 mc. range:
ey a = yy ey vane,
c fo)
RE carrier Est first mixer
frequency oscillator output
frequency (first IF)
In these formulas the carrier) frequency. is
the frequency assigned to the transmitter which
this receiver is intended to receive. = he vise
oscillator operates at a specific frequency in the
30.5 to 48.5 me. range, depending upon the rf
carrier frequency. When the assigned carrier
frequency is known, the oscillator frequency can
be calculated as follows:
Bow the;c25-40 mic) range:
Pee Pian pie Rie he 6845
O Cc
For the 40-54 mc, range:
teste <5, Ses
fo) Cc
The first oscillator frequency is crystal-
controlled to maintain oscillator stability within
+0.0005% from -30°C to +60°C ambient (25°C
reference). The crystal element is mounted in
a thermostatically-controlled heating oven to
maintain proper operating temperature.
The first oscillator frequency is mixed with
the carrier to provide ‘the; firstele ono meas
which is passed on to the first IF amplifier stage.
Ge First IF and Second Mixer
The signals are amplified in the first IF
amplifier and applied to the second mixer along
with an injection frequency generated in the sec-
ond local oscillator, The second local oscillator
frequency is controlled by the IF crystal. This
frequency is 5955 kc., the same for all receivers
regardless of rf carrier frequency. The differ-
ence between the second local oscillator fre-
quency and the first IF is the second mixer out-
put. This output is a 455 kc. signal which carries
the audio modulation,
ships of these three stages are as follows:
The frequency relation-
Second local oscillator
EP eGurte ea seas sees come. DOE ce
First intermediate freq. .... 5500 kc.
Difference freq.
(siecond.1E}) 7.) ae h8 soeeeeee sn 4. Somes
ANTENNA
Oe
J4101@ V103
25-30MC(L) SAB4
30-40MC(M)
40-50MG(H)
59-54 MC (HH )
CRYSTAL FREQ.NO.1
OSCILLATOR
V102
6CB6
1ST MIXER
|
Shy Bes
lFReo.no2 |
| ve2or4
puescecin
| | :
L ee 6679/12AT7 5955 KC.
2ND MIXER
1/2 VIO5-A
6679/12AT7
FILTER fo
[ crvstat |
2 ND.
NOTE: V201 & Y201 USED ON TWO
FREQUENCY MODELS ONLY.
2ND IF-4
V 106 Vv 108
6CB6 6CB6
NOISE
NOISE NOISE
AMPLIFIER RECTIFIER AMPLIFIER
Vit2 V113 1/2 V114
6BH6 6C4 6679/12AT7
LEGEND:
f= CARRIER FREQUENCY (SEE TABLE)
fo= 1ST OSCILLATOR FREQUENCY (SEE TABLE)
f,
"
1ST INTERMEDIATE FREGLENCY=5.5 MC.
f, = 2ND INTERMEDIATE FREQUENCY =455 kC.
e. Second IF
POV PERMAKAY. Ea filter (1s pused/ in (the
second IF before the amplification stages.
This filter is permanently sealed in polyester-
styrene and is unconditionally guaranteed for
the life of the receiver provided the seal is
unbroken and the housing is not tampered with.
This filter is the major factor in determining
the bandwidth of the receiver. It greatly at-
tenuates the signal outside the pre-determined
pass-band. Signals leaving the filter are ampli-
fied by three stages of second IF amplification
(tubes V106, V107 and V108) and applied to the
limiter stages.
f. Limiters Discriminator and Audio Stages
The two limiter stages, tubes V109 and
V110, clip the tops and bottoms of the incoming
2ND IF- 3
DC BIAS
SQUELCH
fi ere
a
1ST 2ND
fp LIMITER f> LIMITER DISCRIMINATOR
V109 V 1190 v144
6BH6 6BJ6 6AL5
NOISE & AUDIO
AUDIO
POWER
AMPLIFIER | AUDIO .| AMPLIFIER AUDIO
172 ViN4 V115 OUTPUT
6679/12AT7 6AQ5
FORMULAS
signals, thereby virtually eliminating the noise
"rides'' the signals in
These stages
which characteristically
the form of amplitude modulation.
are largely responsible for the ''quieting'" effect
inherent in the FM communications receiver
when it picks up an on-frequency signal. The
limiter output is sent to the discriminator, tube
V1lll, which translates frequency deviations into
corresponding amplitude variations, thereby de-
tecting the audio modulation. The audio amplifi-
cation stage provides two watts audio output toa
three ohm load.
ge Noise-Actuated Squelch Circuit
The noise-actuated squelch circuit consists
of a noise amplifier, a noise rectifier, a dc am-
plifier and associated circuit components, as
shown on the schematic diagram. The discrimi-
nator output is applied to the input of the noise
amplifier, V1l12. The input r-c network greatly
attenuates the low-frequency components but
passes frequencies above 3000 cps. These ran-
dom frequencies are applied as a signal to the
grid of V112 and amplified like other types of
signal inputs. In the cathode of the noise ampli-
fier the variable SQUELCH control varies the
gain of the tube by adjusting its bias. The set-
ting of this control is covered in the following
paragraph.
The output of the noise amplifier drives the
noise rectifier, V113. The rectified noise signal
appears as positive voltage across the load re-
sistor, R152. This positive voltage is added to
a steady negative bias taken from the second
limiter stage. The resultant of these two volt-
ages is applied to the grid of the dc amplifier
tube. In the no-signal condition, i.e., noise
alone, the resultant voltage is zero or somewhat
positive. The dc amplifier conducts and cuts off
the audio amplifier tube. This keeps the speaker
silent when signals are not being received. When
signals are received the noise is greatly reduced
and the rectified noise output is not enough to
overcome the steady negative bias on the grid of
the dc amplifier. In this condition, the dc ampli-
fier is cut off and the audio amplifier operates,
passing on the received audio signals.
h. Squelch Control Setting
The SQUELCH control limits the gain of the
noise amplifier tube. In practice, this control is
adjusted for a "threshold" setting. This is the
point where the rectified noise voltage will bias
the grid of the DC amplifier so that the audio
amplifier is just barely cut-off. Then, when a
weak signal is received a slight reduction in
noise will cut off the DC amplifier and allow the
audio amplifier to conduct.
3. OPERATING ADJUSTMENTS
a. Audio Level Adjustments
The audio level control on the receiver chas-
sis isused to set the maximum audio level avail-
able at the VOLUME control on the control unit.
This permits future adjustments to compensate
for variations in tube characteristics, resistor
and capacitor tolerances and transmitter devia-
tion. This control has more than adequate range
of audio drive tothe 3 ohm PM speaker. It should
be adjusted with the VOLUME control on the con-
trol unit set at maximum volume. Then, the re-
ceiver audio level control is adjusted to a point
just below the setting where distortion becomes
audible. This provides a full volume range for
the control head VOLUME control. If the recei-
ver audio level control must be adjusted ina
laboratory test set-up where a speaker is not
available, a setting of approximately 90 per cent
full volume will approximate the normal adjust-
ment.
4. ALIGNMENT PROCEDURE
A complete receiver alignment procedure, in
chart form, is included in this section. Test set-
up information, using a MOTOROLA portable test
set, isalsoincluded withthe alignment procedure.
Any 0-50 microampere meter with an equiv-
alent series resistance of 20,000 ohms may be
used as a metering device. The meter should be
connected from chassis ground to the pin recep-
tacle of the metering socket corresponding to the
stage being measured. Refer to the applicable
schematic diagram for specific metering pin re-
ceptacle information.
5. PRE-OPERATIONAL NOTES
The receiver is aligned to its exact operating
frequency before it is shipped from the factory.
It should, however, be checked for proper op-
eration before it is placed in service. Make the
frequency check described in step9 of the
ALIGNMENT CHART in this section. Also take
meter readings for the first five entries in the
stage measurement chart. If the readings are
beyond the allowable limits, relaignthe receiver
according to the ALIGNMENT CHART.
a. Laboratory Sensitivity Check
Quieting signal is that input signal necessary
to reduce the output noise at speaker 20 db.
Quieting measurements should be made ina well
shielded location in the absence of extraneous
electrical noise.
This measurement is important in that it in-
dicates in one measurement that theunit is work-
ing normally.
The actual measurement is made by observ-
ing the noise voltage at the speaker without any
carrier at the antenna. Sufficient carrier is then
introduced at the antenna to reduce the output
voltage to 1/10 its former value.
To measure the quieting signal accurately,
a Signal generator, Motorola Model 1T1034A
Series or equivalent, and a Motorola Portable
Test Set are required. Employment of a VTVM
or db output meter suitable for accurate measure-
ment or receiver audio output, is also recommen-
ded.
(1) Turn the signal generator "on" and sta-
bilize by a''warm-up"'period of 1-1/2 to 2 hours.
(2) Connect the meter plug from the Port-
able Test Set to the meter receptacle on the
chassis.
(3) Place the REC-XMTR-O, 50 us switch
in the REC position and the GRID CURRENT-
METER-FIELD STRENGTH switch in the ME-
TER position on the Test Set.
(4) Connect the signal generator, adjusted
to the desired carrier frequency to the antenna
input connector using the coaxial lead and 6 db.
pad. The exact carrier frequency will be indi-
cated by a zero reading on the test set with the
meter switch in position +4 or -4,
(5) Connect the output meter across the
voice coil leads (terminals 1 and 2 on the termi-
nal board of the power supply or adapter chas-
sis).
NOTE
If an output meter is not available, the
test set may be used to measure re-
ceiver output by placing the test set se-
lector switch in position 8 or 11, depen-
ding upon the test set used. (Test set
measurements are purely relative and
will not constitute actual output level
readings. )
(6) Turn the SQUELCH control fully coun-
terclockwise (off).
(7) With no signal input to the receiver
(signal generator ATTENUATOR control set for
zero output) adjust the VOLUME control on the
receiver chassis for 0.5 volts of noise output on
the audio output meter. (Adjust for a reading of
10.0 if the test set is used for this measure-
ment).
(8) Adjust the output level of the signal gen-
erator until the receiver audio output is de-
creased 20 db. (to 0.05 volts on audio output
meter) from the reading in step (7). Adjust for a
reading of 1.0 if the test set is used for this
measurement,
b. Stage Measurement Chart
APPROX. MICROVOLT | |. i METER | METER READING
INPUT NPUT TO | FREQ. IN MC. POSITION OR DB.
_ Sr |
eel
es
[eiteeries ane [Fe
a Ss ee
4
| aaa
ats
*DB pe 20 db. (quieting)
-5
Pin 6 of
V 103
lst Mixer
Pin 1 of
ies —
Vv 101
*DB Meter 20 db. (quieting)
ana
NOTE
A model T1034A Signal Generator was used when taking readings on V101, and V104. A Model 65B
Signal Generator with a Type H-4595 output cable was used when taking all other readings except
filter input reading.
*Refer to paragraph 5.a., Laboratory Sensitivity Check, when making this measurement.
AEPD-1082-A (MC4067)
AEPD-1406
TU546
TEST SET METER
SWITCH READING
POSITION
ALIGNMENT
FREQUENCY ADJUST MENT
455 ke.,
sharp tuning
Maximum
bottom slug
455 kce.,
sharp tuning Zero
Eb
top slug
455 ke., L16 Maximum
sharp tuning
255 sKkC.), L15 Maximum
broad tuning
455 ke., L14 Maximum
sharp tuning
lelow the illustration. After
H(pin 1) of V104. The signal
Adjust L13 for amaximum
d when the slug is nearest
jter reading (position 1 or 2).
Sa ey sag (One
sharp tuning
ELS al 2.
and Lll
Oly mores
and L8
Receiver - L5
crystal (L201)
frequency,
sharp tuning
Iworec Maximum
6) of V103 and adjust L10, 52 Same. Maximum
sharp tuning
driver adjustment slot is Maximum
ep selector switch in posi-
ch in the F2 position while
Carrier C109 Zero
(C205)
o receive. A zero meter
nal setting by rotating
s rotated. Set C109 for
frequency,
sharp tuning
Carrier iO Dee Maximum
frequency,
sharp tuning
llow the procedure out-
3 instead of pin 7, V105.
L4, L3
and L2
Carrier freq., lL ors Maximum
sharp tuning
ely to the grid (pin 1) of
=]
Carrier freq., Lor’ 2 Maximum
sharp tuning
7, 50 ohm, attenuation
E
aking the adjustments.
7 Signal generator or Carrier L14 Reduce
urn VOLUME control frequency, audible
Set the selector slight adj. noise
reduce the
eo
Receiver Alignment Procedure
Motorola No. EPD-869-D
11/5/59-RCS
b. Stage Measurement Chart
APPROX. MICROVOLT METER | METER READING
INPUT INPUT TO | FREQ. IN MC. POSITION OR DB.
-0. 1 to -l
=ORtOn= 50
=l2*to.= 46
-12 to -40
20 db. (quieting)
-5
Pin 1 of
Valor
5
5
e
5
D
5
5
5
5
Pin 1 of
V 106
2nd Ih =
150,000
NOTE
A model T1034A Signal Generator was used when taking readings on V101, and V104. A Model 65B
Signal Generator with a Type H-4595 output cable was used when taking all other readings except
filter input reading.
*Refer to paragraph 5.a., Laboratory Sensitivity Check, when making this measurement.
HOW TO SET UP THE P-8500 AND P-8501 SERIES TEST SETS
10.
FOR DISCRIMINATOR AND 455 KC ALIGNMENT
Set the REC.-XMTR. -050 UA switch to the REC. position.
Plug a 455 ke crystal into the two-pin crystal socket.
Set the GRID CURRENT-METER-FIELD STRENGTH selector
switch to the GRID CURRENT position.
Set the ATTENUATOR control for maximum output (10).
Place the test set ON-OFF switch in the ON position. (Test
set operates on internal battery. Conserve battery life by
keeping switch OFF when set is not in use.)
Adjust the frequency control (ADJ) for a maximum meter
reading.
Set the ON-OFF switch to the OFF position,
Set the GRID CURRENT-METER-FIELD STRENGTH switch
to the METER position.
Plug the test set metering cable into the METER receptacle
on the receiver chassis,
Connect one end of the test set extension cable to the RF
OUTPUT jack on the test set. Connect the other end of the
extension cable to the RF probe cable.
HOW TO SET UP THE TU546 SERIES TEST SETS
FOR DISCRIMINATOR AND 455 KC ALIGNMENT
Set the function selector switch to the RCVR position,
Connect the 20-pin metering cable into the receptacle on
the test set. Plug the other end (11-pin) into the metering
socket on the receiver.
Connect one end of the test set r-f extension cable to the
xr-f connector on the test set. Connect the other end of
the extension cable to the r-f probe cable.
Place the oscillator and meter reversing switch to the
455 kc position.
TEST SET SELECTOR SWITCH POSITIONS
P-8500 & P-8501
SERIES
TEST SETS
TU546 SERIES
TEST SETS
CIRCUIT
METERED
2nd IF Ist Lim.] Discr.
#3 Grid | Grid Output
TH
TERMINAL IDENTIFICATION
SOLDER SHORT JUMPER
Ye. Os (STEP 1)
TUNING SLUG
O3 Os
COLOR CODE
BLU.
20) 1
DETAIL A
R-F COILS L3
STEPS182
JUMPER
Ti BOTTOM SLUG
‘DISCRIMINATOR
PRIMARY
STEP 3
RE PROBE Li6é I-F COIL
OSIT
Hens STEP4
STEPS 182 LS I-F COIL
STEP 5
STEPS 5,485 14 I-F COIL
STEP 6
Lia STEP 7
I-F COILS Lit 10
Li2
STEP L9 FI-F COILS
L4
L8
STEP1O
Gd
MULTIPLIER COIL
L2
STEP 8
L201 COIL
LS
STEPI2 » {ST OSCILLATOR COIL
STEP9
ci09
c205) TRIMMERS
ui
ANTENNA COIL
MC4067
HOW TO SET UP THE SIGNAL GENERATOR*
FOR 5.5 MC. I, F. ALIGNMENT
Couple the signal generator output loosely to the grid (pin 7) of V105.
Couple just enough input to give a small meter reading.
Set the test set selector switch to position 4. Turn on test set.
Set the signal generator frequency for approximately 5.5 mc.
Locate the exact 5.5 mc point by rotating the generator dial back
and forth around the 5.5 mc setting until you obtain a meter reading
of exactly zero (position 4). The meter reading should go above and
below zero as the dial is rotated. Leave the generator set for zero
meter reading. Make sure the signal remains ‘constant throughout
the alignment (generator may drift).
*Use Model T1034A Series or equivalent.
TU546
. ALIGNMENT TEST SET| METER
STEP STAGE, TEST CONDITIONS AND PROCEDURE FREQUENCY | ADJUSTMENT | SWITCH | READING
POSITION
= ae
DISCRIMINATOR PRIMARY—Solder a short jumper across terminals 4 and 5 of the discriminator secondary coil (see DETAIL A, lower left). |
1 Set up the Motorola Test Set as described in the left hand column. Place the test set selector switch in position 1 and set the ON-OFF switch to 455 ke., fa 5 Maximum
the ON position. Move the r-f probe around near pin 1, V106, until the meter reading is at least 15 ua. Secure the probe in its position and place sharp tuning bottom slug
the selector switch in position 5. Adjust Tl for maximum meter reading. Unsolder the jumper.
—|
2 DISC RIMINATOR SECONDARY —With the r-f probe placed as in step 1 adjust the top slug of T| for exactly zero meter reading (selector switch in 455 kce., gta |
position 4). sharp tuning top slug 4 Zero
- + — 4 +—
455 KC. I-F COIL Ll6—Place ther-f probe near the input to the 455 kc i-f filter (see illustration), Couple the signal loosely so that an in-
3 crease of signal strength will produce a linear increase in meter reading (switch in position 1 or 2). Secure the probe in position to keep the input 455 ke., L16 2 Maximum
at a constant level. Adjust L16 for a maximum meter reading with the switch in position 2. sharp tuning | |
+— ~
4 455 KC. I-F COIL L15—Couple the signal to the i-f filter so as to obtain a maximum reading of approximately 5 ua. with the selector switch in 455 ke. , L15 1 Maximum
position 1. Adjust L15 for a maximum reading. broad tuning |
a al
5 455 KC. I-F COIL L14—Use the same conditions as in step 4. Adjust L14 for a maximum meter reading. Place the test set ON-OFF switch in 455 kc., L14 1 Maximum
the OFF position and remove the r-f probe. sharp tuning “4
+ +
5.5 MC I-F COILS L113, L12 and L11—Set up the Model T1034A Series Signal Generator (or equivalent) as described below the illustration. After
adjusting the signal generator set the test set selector switch to position 1 or 2 and couple the generator output to the grid(pin1l) of V104. The signal 5,5 mc., |
6 must be coupled loosely so that an increase of signal strength produces alinear increase in meter reading (positionl or2). Adjust L13 foramaximum sharp tuning L13, Li2 lor2 Maximum
meter reading with switch in position 1 or 2, note that two peaks are present within the coil tuning range. The peak found when the slug is nearest and Ll
the top of the coil(as viewed from bottom of chassis) is the proper alignment peak. Adjust L12 and L11foramaximum meter reading (position 1 or 2).
T fe ———
7 5.5 MC. I-F COILS L10, L9 and L8— Follow the same procedure as in step 6 except couple the signal to the grid (pin 6) of V103 and adjust L10, 5.5 mc., L10, Lg l or 2 Maximum
L9 and L8; no double peaks will be found. sharp tuning and L8&
aa i ts Leet
FIRST OSCILLATOR COIL L5—Uncouple the signal generator. Position the ceramic trimmer, C109, so that the screwdriver adjustment slot is Receiver L5 6 Maximum
8 parallel with the length of the receiver chassis (see illustration), Adjust coil L5 for a maximum meter reading with the selector switch in posi- crystal (L201)
tion 6. If 2-frequency, set F1-F2 switch on control head to F1 position while adjusting L5. Then place the F1-F2 switch in the F2 position while frequency, |
adjusting trimmer C205 in the same manner as C109 above. Adjust coil L201 for a maximum meter reading. sharp tuning
4 co ———d
FREQUENCY CHECK—Transmit the carrier frequency from the transmitter which this receiver is normally intended to receive. A zero meter Carrier C109 4 Zero
reading indicates that ihe receiver is on frequency. Adjust trimmer C109 to obtain a zero meter reading. Check the final setting by rotating frequency, (C205)
9 C109 back and forth while observing the meter. The reading should go above and below the zero point as the trimmer is rotated. Set C109 for sharp tuning
exactly zero meter reading. On 2-frequency receivers, adjust C205 for the number 2 frequency. |
MULTIPLIER COIL L7—The signal generator must be set for the exact carrier frequency to be received. To do this follow the procedure out- Carrier Li lor 2 Maximum
10 lined below the illustration except select the carrier frequency instead of 5.5 mc. and couple the signal to pin 6 of V103 instead of pin 7, V105. frequency,
With the generator output coupled loosely to pin 6, V103, adjust L7 for maximum meter reading (position | or 2). sharp tuning
—_—_—__+—
SS
11 RF COILS 14, L3 and L2—Keep the signal generator set for the carrier frequency as in step 10. Couple the signal loosely to the grid (pin 1) of | Carrier freq., L4, L3 lor2 Maximum
V101. Adjust L4, L3 and L2 for maximum reading (position 1 or 2). sharp tuning and L2
as r [—— ——o
12 ANTENNA COIL Ll—Connect the signal generator output to the antenna receptacle on the receiver chassis. Use a6 db, 50 ohm, attenuation Carrier freq., Ll 1 or 2 Maximum
pad between the generator and the receiver input. Adjust Ll for maximum reading. sharp tuning
IGNITION NOISE ADJUSTMENT -— Install the receiver in the vehicle. Start the vehicle engine and allow it to run while making the adjustments.
Turn the receiver ON and allow it to warm up for five minutes. Radiate a carrier frequency signal from a transmitter, signal generator or Carrier L14 2 Reduce
test set (see test set instruction manual). The signal should be just strong enough to produce quieting (20 to 30 db). Turn VOLUME control frequency, audible
ve on control head to normal usable level. Plug the test set metering cable into the METER receptacle on the receiver. Set the selector slight adj. noise
switch to position 2 and note the meter reading. Adjust coil L14 very slightly to reduce audible ignition noise. DO NOT reduce the
meter reading more than one-half microampere.
Receiver Alignment Procedure
Motorola No.
11/5/59-RCS
EPD-869-D
e
a
dane ct
z
gehp nge
AEPD-952-A (CE1645A)(CE056)
RE INDICATED IN OHMS, +10%, 4/2 WATT
—D. K=4000 OHMS.
ARE INDICATED IN MICROMICROFARADS
TED.
S:
D WITH A VTVM (B+ =200V) WITH SQUELCH AT
WISE) AND DC VOLUME AT MAXIMUM (CLOCKWISE)
R IN VALUE FOR THE VARIOUS RECEIVER MODELS
IS APPLICABLE,
LE FOR SPECIFIC INDENTIFICATION.
CRYSTAL
HEATER
6) B ©
C167
Vita 1500]
VIO5
sf 14
V103 Ci74
=E1500,
4 3 =
C168
Ol ar |
Viol
TRB1081AB/ TA235S-L
TRB 1082AB/TA235S-M
TRB 1083AB/TA 235S- H
TRB {0 84AB/ TA 2355S - HH
TUS40S
400K
220
{MEG
¢
SOCKET)
102 -
METER
SOCKET
s i
B+ 200V nt — - 7
FROM OSC. anne a ep mee 6
FROM) DISCR de ee es
FROM 4ST. Lim, ¢—WHE=REO "2
FROM 2ND. 1.F «—WHE=BAN. '
FROM
AUDIO
OUT PUT
TERMINAL BOARD
LOCATED ON POWER SUPPLY
fi YEL, i) ul
|
ie
Qe)
A B
Ore
Y
GRN -YEL
(NOTE 3)
T4
TERMINAL IDENTIFICATION BOTTOM VIEW
OF COILS
COLOR CODE
BLU
MODEL TABLE
CHANNEL
SPACING
TRBIO83AA/ TA 235 W-H
TRB1084AA/TA235 W-HH
TRB{O81AB/ TA235S - L
TRB{O82AB/ TA235S-M
TRB {083AB/ TA235S-H
TRB 1084AB/TA235S-HH
25- 30MC
30-40MC
BLK-WHT.| 6
| f | SQUELCH
eR : 3 ia = CONTROL
GRN- YEL Gy p> "Y"FIL,
|
Y" FIL. RN<YEL :
MOBILE
tee 200 B+ 200V
TRB1080/TA235 Single-Frequency Receiver
Schematic Diagram
Motorola No. 63E854952-E
11/5/59-RCS
AEPD-952-A (CE1645A)(CE056)
FREQUENCY RANGES
(L) -25-30MC RF 4a7(L) 4a7(L) V103 82(L) 1/(t) VADs S2(L) wl) : “gs =
- ; 2 : il MC IST. : 2N \x
(SAG _ 6AKS -3(M) .3(M) MOE Fa aA 5.5MC 1S fetats Br Ni Pap dette: wae
(H) 40-s50mMc 120. C4, ./5(H 8 HH) C6 ./5(H GH) 70V C14... .47(MBHH) C16 ,, .82/HAHH) 95y C19 |, 47/1 BHM) C21, .62/HBHH) gov Big
(HH) 50-54MC
34 Ot pF 455KC
- FILTER
(NOTE 5)
P1O1
a6
27(L) |
es
} E cia |
60.7
L201
t RHO S Cita
105 R103 iEiee ed
LE tee |
==. ee ee 10(H, 6(H) 7 , 807-
Y204 (2-FREQ) Y404 (4-FREQ.) 8 eae) wey sen us —
COIL 414850841
CRYSTAL CLAMP
Li |
ANTENNA COIL So rere reey a \
200/(L)
26K 890035 ae Joo | Tes00 [eooT | Toren er 2 ve
TUBE SHIELD Nevetioes POST it 2a
Vvi01 FIRST OSCILLATOR = =
v201 1 vi02 e+ e;
L2
R-F COIL ——_ , 264890034 Poy eon be
7 . TUBE SHIELD RI04 AA
MULTIPLIER COIL L6 NOT USED rm 2000T Bk hes
L3 L8 I-F COIL ee eae _ yor oval £7) | ee
R-F COILS Vi03 ‘ Hh EOE) BE Shoo eno osc
82(H) | r —— 4/2 6679/12AT?
os L9 I-F COIL ha azn | 2 8% | cata tues
I-F COILS vale aig ame i
Lis LiO I-F COIL | t----- PT srs
26A881244 ee ee cmttioety = ean sp pe
TUBE SHIELD L44 I-F COIL PREEHENCY OW 4 ANE aoe fan [war useo [ust ae E10
VAO5 \3 a ad - PD
41A824763 _ es sr FILTER ea ole ee <r
GRYSTAL CLAMP 5 100 r ) 455KC I F AMPL-1 ews F AMPL-2 pea’ AMPL-3
IF CRYSTAL C134 6CB6 6CB6 6CB6
264890034
TUBE SHIELD
THON VTOOON |
2 Rist
Nhs ie zr0K iL awe 2
Vi06 RIN9 * O1 uF 5%
WHT - BRN —> C143
WHT -RED—>
L414
I-F COIL
— eee COILS ee es
TO PIN‘ TO PIN 2
(METER SOCKET) (METER SOCKET)
B+ ; |
Vits Vi09 NOISE FROM DISCR. = fea te 6 TOO vig
V414 >> a! = NOISE AMPL. GRID |
| >
BOTTOM VIEW OF CHASSIS |
vit Vito eas Rise oaks VAI4-A past) fens ae Va45 |_ Rees
: ; AMPL T-oR =
vat2 oe oS ere Ae Sis ‘af cs rowen sur ee x
“1 1/2 667 ;
VitS T it " ta v 4/2 6679/12ATT ees Oo ie ipl 8
444837078
TT
TUBE HOLD-DOWN SPRING DISCRIMINATOR
PRIMARY
C141
46A855066
MOUNTING POST
644840844
AUDIO LEVEL PLATE
Bh FROM vito
2ND. LIM
TO
SQUELCH Ri6t RIiSS
CONTROL
B+ RED
&+ 200V
-82(L)
~47(M)
-47(H EHH)
130V
Vvi08
44 455KC I F AMPL-3 JE 1ARS)
| . 6CB6 “]
|
c25
‘ 36
BV cs
Rist
2 ° 5
cas R130 | Ci45 MEG
.OtwF] 420K | tbr S%
es WHT -RED—
a = => TO PIN 2
B+ (METER SOCKET)
~ re Thai ay at
C157 6ca DC AMPL.
-15V {/2 6679/ 12AT7
a5 YEL.-RED
RIS2
(NOTE 5)
5%
= RIS3
NWN
3,3 MEG.
c1i59= = G60
2000 OtpF
Vvi04
5.5MC 1ST. Lf AMPL.
6BH6
R134
{MEG
B+
46V
wee v109
51 5 {ST LIM
7 6BH6
‘ 6
Vv
=40V ad
R132 2 R133
100K 150K
5%
Ci46
“Fives
AUDIO FROM DISCR
RN.
12 = we Otia-8
MEG {ST, AUDIO
4/2 6679/12AT7
82(L) s(t)
.47(M) 1(M)
.47(H8HH) .82(H &HH)
, REO
B+ 200V
V1O5-A
2NO MIXER
{/2 6679/12AT7
80V
ci22
455KC
FILTER
(NOTE 5)
TO vi06
GRID
B+
C120 Rita ci23
= ae 82k Tower
C126 Rite
1500 BI 6.8K
80V
4
yr V105-B
q
Vineness 2ND OSG
qT {/2 6679/12AT7
C124 RWG \
Sf 390K 3
1102
5.955mc S 6V
i yaa
5.6K ee
= = - vant
DISCR.
6AL5
E101
R140 o> er een
T
3c — (NOTE 5) | |
70V 5% | |
| 2 | 100 a7 |
149 NANG, 3 eS | id
= é 2ND. LIM S = oe | |
a = rf
* 6Bu6 ie 3 } } 2 pipe | ad lao PL
ae = c29
{ 6 70v S 200 | 4 7 ae AUDIO
O = LEVEL
-17V | CONTROL
R135 RI36 2 RI37 RI2
(MEG. 100K C150 ees Cae eta wes |
5% Our 2 ‘ ale 5 |
C148 164 ° = (NOTE 5)
of 02 5% =
ar lL wf Ake a |
= = = = 47k (500
B+ BI iF
hi, te Ts Meco GRID
TO vit2
V445 | NOISE AMPL WHT-GRN. 5 10 PINS * sae
POWER AMPL. (METER SOCKET)
6AQ5 :
pr TO vii4-8
an ree eet: (ST. AUDIO
g AUDIO OUTPUT
TO SPEAKER
B Face 3.2 OHMS
2 ples ae,
102-10
NOTES:
1, ALL RESISTOR VALUES ARE INDICATED IN OHMS, +10%, 4/2 WATT
UNLESS OTHERWISE STATED. K=4000 OHMS.
2. ALL CAPACITOR VALUES ARE INDICATED IN MICROMICROFARADS
UNLESS OTHERWISE STATED.
3. “Y" HEATER IS 12.6VOLTS.
4. .ALL VOLTAGES MEASURED WITH A VTVM (B+ =200V) WITH SQUELCH AT
MINIMUM (COUNTERCLOCKWISE) AND DC VOLUME AT MAXIMUM (CLOCKWISE)
5, COMPONENTS NOTED DIFFER IN VALUE FOR THE VARIOUS RECEIVER MODELS
FOR WHICH THIS DIAGRAM |S APPLICABLE.
REFER TO FOLLOWING TABLE FOR SPECIFIC INDENTIFICATION
i MODELS
TRB{OB81AA/TA235W-L | TA235x | TRB{OB1AB/TAZ35S-L
MPONENT. | TRE1O82AA/ TA235 W-M TRB {O82AB/TA235S-M
COMEOH TRB{OB3AA/TA235 W-H TRB 1083AB/TA 235S- H
TRB{O84AA/ TA235 W-HH TRB {084AB/TA2355 - HH
FILTER TUS40W TU540X TU540S
R 125 | 18K {8K 100K
R146 680 680 220
R152 560K [ 560k | {MEG |
| R139 56k | 56k | 180 K |
[R140 56k [ 56x | 180 K J
R143
TO PIN 4
(METER
gS MEG are SOCKET)
Ri44
820K {500
is ue
J102
BLU neds
RI42 C152 SOCKET
200K iar
BLK E
a = 8+ 200V “ct aa ~— if
FROM OSC. ¢€—————_-~< 6
FROM) DISCR: @— eee eas
FROM 4ST. LIM, €—seaneo 2
FROM 2NO} 1; Ree ena
FROM DISCR, OUTPUT ¢ <4
K.
FROM BL 10
AUDIO
ouT PUT 9
je aps "
O ¢ ORG.
"Yy" FIL, RNY
a MOBILE
a+ 200
Sia
CRYSTAL
HEATER
OB oO
C167
vita 1500]
| as le ey sg ¥,
sft es
5 4
vi03 Yom
T1500,
4/ 3 ei
cies
OlmaF |
viol
+ a) 2 + +
C169 +
1500
v102 7
— S$} 2 ~—*
c170 1
01 pF 1 x
vi06
1a os 2
ci6s
“Lonur
vi04
t ae mies
fe)
C172 ee
3900
vag vis
4 3
be 13 y m 4
viH0 ViOT7
hor | 34 |
v109 vios
4 3 D af} se! =
Vit3 vita |
ee sf ls j 4 3
ae
TERMINAL BOARD
LOCATED ON POWER SUPPLY
fey G4
BLK-WHT.| ®
ORG, |
TRBIOBIAA/ TA235 W-L
m4
TERMINAL IDENTIFICATION
COLOR CODE
BLU
25- 30MC
TRBIO82AA/TA235W-M
TRBIOB3AA/TA 235 W-H
TRB{O84AA/TA235 W-HH |
40-50MC
50-54 MC
40 KC
TRS (O81AB/TA235S-L |
25 - 30MC 20KC
TRBIO82AB/ TA235S-M |
30-40MC 20kKC
TRB 1083AB/ TA235S-H
40-SOMC
TRB 1084AB/TA235S-HR
TA235X
10K
no} us| oa | Ga] os | Gu | Ga] OF
f SQUELCH
= CONTROL
CRYSTAL & HEATER
|
TRB1080/TA235 Single-Frequency Receiver
Schematic Diagram
Motorola No. 63E854952-E
11/5/59-RCS
DESCRIPTION
‘stal: female;
square; molded
akelite base; chassis
1
rectangular; black phen-
e; chassis mounted
AY" IF Filter;
hannel Spacing
yi Balter:
hannel Spacing
AY" IF Filter;
Channel Spacing
.adio Set
receiver
ist be
stal type
quency
‘dering
IT, quartz:
sont rol:
10 mc carrier freq;
3 6 volt heater unit
54 mc carrier freq;
; 6 volt heater unit
F; 5.955 mc
AEPD-952-A (CE1645A)(CE056)
Y201
CRYSTAL HEATEK
°) B o—
Y104
CRYSTAL HEATER
ARE INDICATED IN OHMS, +10%, 1/2 WATT ——o'8
ED. K= 41000 OHMS. ViN4
ARE INDICATED IN MICROMICROFARADS : 2
ED.
Ss. Vi05
D WITH A VTVM (8+ =200V) WITH SQUELCH AT ar
WISE) AND DC VOLUME AT MAXIMUM (CLOCKWISE). Tew 7
ER IN VALUE FOR THE VARIOUS RECEIVER MODELS v204 By 1209
IS APPLICABLE *}
BLE FOR SPECIFIC INDENTIFICATION. af) 3
Vi04
4 3
v104
HE ATE
ro Pel
Vad SPN |
4 3 |
V103 |
ate 3 sed ATE aS
V140
af 3
TO PIN.4
(METER O
KET
SOCKET) Vi B
)
3f ja
102 a iu
ce =
uetce GRN.-YEL.
SOCKET
\ ™
TERMINAL IDENTIFICATION BOTTOM VIEW
ad COILS
B+ 200V «0 = _ 7
EROMECS CN @ = ea eecaG
FROM DISCR. rere 5
FROM (ST. Lim, ¢ —WHE-REO_ | 2 COLOR CODE
WHT BRN. |
BLU
TROON 0 Nae
FROM MODEL_TABLE
AUDIO
OUTPUT
TRB {O83AC/TA 235 W-R2-H 40-50 MC
TRB {084AC/TA 235 W- R2-HH 50-54MC
TRB {08 1AD/ TA235$ -R2-L 25-30MC
“H[3_[_40-
ome
TRB IOBZAD/TAZ35S-R2-M| 3 | 30-40Mc_| 20K |
[3 [-40-
:
are
TERMINAL BOARD
LOCATED ON POWER SUPPLY
OR ADAPTER CHASSIS
YEL. i?
hig < BRN.-WHT. ame: p> FREQ. 4
TO SWITCH
Q. 2 < BRN-GRN. BRN-GRN| ( ) p> FREQ.2
A GRN. MOBILE
TRB 1083AD/TA235S- R2-H 40-50MC
TRB 1084AD/ TA235S-R2-HH 50-54MC
TA235X-R2 25-54MC
"FIL. ¢ GRN.~YEL. an ) i > 'Y"FIL.
RED REO
LOD B+ 200V SQUELCH
{9 | ¢ {0K CONTROL
+ ae (2) a8 5
TRB1080/TA235 Two-Frequency Receiver
Schematic Diagram
Motorola No. 63E854953-G
11/5/59-RCS
SCHEMATIC DIAGRAM PARTS LIST
MOTOROLA
Reference: PART No. SeUieoe PAGTOROES “AGES poten
Schematic Diagram CAPACITOR, fixed: unless other- 4
63E854952-F wise stated CAPACITOR, fixed: unless other- i COIL,
same as C13 wise stated
same as C13 8A892986 oil filled; tubular; .25 uf 420%;
REFERENCE | MOTOROLA DESCRIPTION
SYMBOL PART No.
MOTOROLA
DESCRIPTION PART No DESCRIPTION
RESISTOR, fixed: carbon; unless RESISTOR, fixed: carbon; unless
otherwise stated otherwise stated
24K824722 same as L5Mexc.inc.Cl1H, C12
same as R8 same as Rl]
same as L5Mexc. inc. CllIHH, C12
21R114440
21R474461
21R400073
21R400072
21R2748
21R6631
21R114153
21R31493
21R475262
21R490602
21K83994
21K830201
21K881064
21R120437
21R400404
21K849334
21K847873
21K840711
21R400448
21K475679
21083959
CAPACITOR, fixed: unless other-
wise stated
ceramic; tubular; 27 uuf 25%;
500 vdew
ceramic; tubular; 20 uuf 25%;
500 vdcw
ceramic; tubular; 8 uuf +. 5uuf;
500 vdcew
ceramic, tubular; 6 uuf +. Suuf;
500 vdew
molded silver mica; 200 uuf +10%;
500 vdew
molded silver mica; 100 uuf +10%;
500 vdew
ceramic; tubular; 47 uuf #10%;
500 vdcew
ceramic; tubular; 24 uuf 25%;
500 vdew
same as C1L
ceramic; tubular; 15 uuf 25%;
500 vdew
ceramic; tubular; 10 uuf 25%;
500 vdew
same as C1H
molded phenolic; tubular; .47 uuf
220%; 500 vdcew
molded phenolic; tubular; .3 uuf
25%; 500 vdew
molded phenolic; tubular; . 15 uuf
25%; 500 vdcew
same as C4H
ceramic; tubular; 33 uuf 25%;
500 vdcew
same as C1M
same as C3H
same as ClH
same as C4L
same as C4M
same as C4H
same as C4H
same as C1L
same as C3M
same as C1HH
ceramic; tubular; 4 uuf #5 uuf;
500 vdew;
NOT USED
same as C4L
same as C1L
same as C3M
same as C3M
same as Cl1H
cer.; disc; 20 uuf 5%; 500 vdcw
cer.; disc; 8.2 uuf; +. 5%; 500 vdcw
same as C11M
same as C11M
molded silver mica; 5! uuf 25%;
500 vdcw :
ceramic; tubular; 60 uuf +10%;
500 vdcw
molded phenolic; tubular; .82 uuf
+10%; 500 vdcew
same as C4L
same as C4L
same as C4L
same as C13
molded; tubular; | uuf +.2 uuf;
500 vdcw
same as Cl6L
same as C14L
same as C1IL
21R87127
21K840048
21K840811
21K840812
21B801139
21B800801
21K842041
21K840365
215800801
21K837746
21K840812
21K847874
20B840719
21K84247
21K837996
21K840711
same
same
same
same
as Cl4L
as C4L
as C4L
as C4L
same as C13
same as Cl6L
same as Cl6L
same as Cl4L
same as C14L
same as C13
ceramic; tubular; 36 uuf 45%;
500 vdew
same as C23
same as C23
molded silver mica; 240 uuf 45%;
500 vdew
ceramic; disc; 10 uuf 45%;
500 vdew
molded silver mica; 200 uuf 25%;
500 vdcw
same as C28
ceramic; disc; .01 uf +80-20%;
600 vdew
ceramic; disc; 1500 uuf GMV
+100% max. ; 500 vdew
same as C4L
same as C4L
molded phenolic; tubular; . 36 uuf
*5%; 500 vdew
same as C32H
ceramic, disc; 24 uuf 45%;
500 vdew
NOT USED
ceramic; dise; 1500 uuf GMV
+100%; max. ; 500 vdcw
ceramic; disc; 2000 uuf +10%;
500 vdew
molded; silver mica; phenolic
coated; 200 uuf 25%; 500 vdew
NOT USED
ceramic; disc; 12 uuf 45%;
500 vdew; NPO
same as C103
variable: air; 8 uuf min. to 50 uuf
max.
molded phenolic; tubular, 2.2 uuf
#10%; 500 vdew
same as C30
same as C104
same as C104
ceramic; disc; 3900 uuf; +10%;
500 vdew
same as C30
same as C103
same as C30
same as C114
same as C103
same as Cl6L
same as C30
same as C30
same as C30
molded silver mica; phenolic
coated; 51 uuf £5%; 500 vdew
same as C124
same as C103
NOT USED
NOT USED
NOT USED
NOT USED
NOT USED
NOT USED
NOT USED
21K847601
21K840049
21B401029
23K890624
8K85984
21K842354
9A87120
9B86864
24K824723
400 vdew
same as C30
same as C30
same as C30
same as C124
same as C30
same as C30
same as C124
NOT USED
same as C103
same as C30
same as C30
same as C103
same as C124
same as C30
same as C101
same as C30
same as C114
molded silver mica; 1000 uuf 45%;
500 vdew;
same as C103
molded silver mica; phenolic
coated; 800 uuf 25%; 300 vdcw
same as C30
ceramic; disc; .02 uf +80-20%;
500 vdcew
same as C124
same as C156
same as C104
same as C30
electrolytic; tubular; 5 uf
+100-15%; 150 vdew
same as C30
same as C104
same as C156
oil filled; tubular; .02 uf +20%;
400 vdew
same as C30
same as C103
same as C30
same as C103
same as C30
same as C103
same as Cll4
CAPACITOR-RESISTOR ASSEMBLY:
tubular; consisting of:
dual CAPACITOR; printed
circuit, silver paint on
ceramic form; each section
100 uuf; 300 vdew
one RESISTOR; fixed; carbon;
47K 420%
CONNECTOR, receptacle:
female; single contact; round
molded mica filled phenolic
base; for 1/8'' diameter male
pin connector
female; 11 contact; polarized;
round molded black plastic
base; chassis mounted, does
not include 424821428 RING,
connector retainer; which must
be ordered separately
COIL,
RF: Antenna; base stamped 723;
includes 46K881276 CORE,
adjustable tuning; coded
ORANGE dot and CIL, C2L,
Rl
24K825514
24K881365
24K831225
24K831224
24B825525
24K831366
24K831221
24K831220
24K825516
24K825515
24K824726
24B824336
24K824724
24K831367
24B855844
24B847871
adjustable tuning;
ORANGE dot and {
Rl
RF: Plate; base stam
includes 46K8812)
adjustable tuning;
ORANGE dot and
RF: Coupling; base s|
includes 46K881276
adjustable tuning;
ORANGE dot and
RF; Coupling; base
includes 46K8812
adjustable tuning;
ORANGE dot and €
RF: Coupling; base s
includes 46K881276
adjustable tuning;
ORANGE dot and
RF: Coupling; base
includes 46K881276
adjustable tuning;
ORANGE dot and
stamped
; includes 46K881276 CORE,
adjustable tuning;
ORANGE dot and
RF: Mixer Grid; bas.
336; includes 46K\
adjustable tuning;
ORANGE dot and
RF: Mixer Grid; bas.
724; includes 46K88
adjustable tuning;
ORANGE dot and
RF: Mixer Grid; bas
367; includes 46K88
adjustable tuning;
ORANGE dot and
RF: lst Oscillator; b
BC7; includes 46K881276 CORE,
adjustable tuning; \eoded
ORANGE dot and €11L,
cl2
RF: Ist Oscillator; bhse stamped:
AX4; includes 46KB
CORE, adjustable
coded ORANGE d
C12
24K837228
24K830218
24K837470
24B825505
24B825507
24K837229
24K854048
24K840842
24K847869
24K847870
24B840042
28K849416
6R6031
6R5591
6R6407
NOT USED
same as 14L except Injection and
includes C10L
same as L4M except Injection and
includes C10M
same as L4M except Injection and
includes C10H
same as L3HHexcept Injection and
includes C10HH
IF: 5.5 mc IF - 1; base stamped
AF9; includes 46K891111
CORE, adjustable tuning;
coded LAV dot and C13, R4
IF: 5.5 mc IF - 2; base stamped
218; includes 46K891111
CORE, adjustable tuning;
coded LAV dot and C15
: 5.5 mc IF - 3; base stamped
AJ1; includes 46K891111
CORE, adjustable tuning;
coded LAV dot and C17, R5
:5.5 mc IF - 4; base stamped
5505; includes 46K891111
CORE, adjustable tuning;
coded LAV dot and C18
:5.5 mc IF - 5; base stamped
507, includes 46K891111
CORE, adjustable tuning;
coded LAV dot and C12
:5.5 mc IF - 6; base stamped
AG1,; includes 46K891111
CORE, adjustable tuning;
coded LAV dot and C22, R7
: 2nd IF - 1; base stamped
BC6; includes 46K891110
CORE, adjustable tuning;
coded GRN dot and C23, R8
same as L14 except 2nd IF - 2
and includes C24, R9
IF: 2nd IF - 3; base stamped
AR9; includes 46K891110
CORE, adjustable tuning;
coded GRN dot and C25, R10
RF: choke; 1.7 uh; coded
BLK-GRN dot
RF: choke; .5 uh; coded
BLK-VIO dot
RF: choke; 1 uh; coded RED-BLK
dot
same as L102
CONNECTOR, plug: male
Single contact; round brown
bakelite wafer insulator;
cable mounted
RESISTOR, fixed: carbon; unless
otherwise stated
100K +10%; 1/2°w; ins.
18K £10%, 1/2 w; ins
NOT USED
220K +£10%, 1/2 w; ins.
same as R1
same as R1]
same as R1
effective resistance 33K; consists
of: two (2) 6R6074 RESISTORS,
fixed; carbon; each unit
68K £10%; 1/2 w; ins.;
parallel connected
6R6410
6R6428
6R6433
6R6397
6R6446
6R400076
6R6479
6R2049
6R401006
6R2089
6R6038
6R6069
6R6398
6R5644
6R5646
6R6117
6R6326
6R5553
6R6270
6R488095
6R5553
6R6414
6R400228
6R5631
6R6046
6R6477
6R6048
6R401006
6R2061
6R5773
18K845110
6R6040
or 6R6270
6R5796
or 6R5587
6R6497
6R490110
6R6434
6R2097
6R400334
6R6475
33K £10%; 1/2 w; ins.
6.8K £10%; 1/2 w; ins.
2.2 meg £10%; 1/2 w; ins.
22K 10%; 1/2 w; ins.
4.7 meg £10%; 1/2 w; ins,
same as Rl
same as R4
39K 45%; 1/2 w; ins
NOT USED
68K 45%; 1/2 w; ins
120K 45%; 1/2 w; ins.
56K £5%; 1/2 w; ins.
same as R106
1.8K £10%; 1/2 w; ins.
1.5K +10%; 1/2 w; ins.
2.2K 410%; 1/2 w; ins.
150K +10%, 1/2 w; ins.
82K +10%; 1/2 w; ins.
same as R11
390K £10%; 1/2 w; ins.
5.6K £10%; 1/2 w; ins.
100 ohm £10%; 1/2 w; ins.
100K 5%; 1/2 w; ins.
220 ohm +10%; 1/2 w; ins.
same as R114
NOT USED
same as R119
same as R113
18K +5%; 1/2 w; ins,; used only in
TA235W and TA235X
100K 45%; used only in TA235S
270K £10%; 1/2 w; ins.
NOT USED
1.5 meg +5%; 1/2 w; ins
same as R108
120K #10%; 1/2 w; ins.
same as R128
same as R119
same as R113
1 meg +10%; 1/2 w; ins.
same as R134
same as R119
15K £10%; 1/2 w; ins.
47K +10%; 1/2 w; ins.
56K; used only in TA235W and
TA235X
180K 45%; used only in TA235S
same as R139
820K +10%;
variable: 200K 420%; 1/4 w
same as R128
same as R138
same as R113
680 ohm; used only in TA235W and
TA235xX
220 ohm; used only in TA235S
same as R113
same as R4
Same as R4
same as R134
same as R13
560K 45%; 1/2 w; ins. used only
in TA235W and TA235X
1 megohm 45%; 1/2 w; ine. ;
used only in TA235S
3.3 meg +10%; 1/2 w; ins.
3.9 meg +10%; 1/2 w; ins.
same as R110
27K £10%; 1/2 w; ins.
same as R156
6.8 meg +10%; 1/2 w; ins.
12 meg £10%; 1/2 w; ins.
6R6377
6R6378
47K 410%; 1/2 w; ins.
same as R128
same as R120
56K £10%; 1/2 w; ins.
TRANSFORMER,
1V842353 RF: discrim.; coded BLU dot;
inc. ; two 76A821495 CORE,
adjust tuning, coded YEL dot
and C26, C27, C28, C29
C30, C31, Ril, R12, R13
25K847479 AF: output; 5000 ohm at 55 ma to
3 ohm
TUBE,
electron
electron
electron
electron
electron
electron
same as V106
same as V106
same as V104
6BJ6 electron
6AL5 electron
same as V104
6C4 electron
same as V105
6AQ5 electron
LINE, RF transmission:
1V857900 assembly includes;
30B475378 CABLE, RF:
coaxial; RG-58A/U;
4" length required
Reference part P101
SOCKET, tube: female;
95834083 | 7 contact; miniature; molded mica
filled phenolic base; saddle
mounting; includes center
shield and tube shield base
same as XV101
9K87 124 7 contact; miniature; molded mica
filled phenolic base; saddle
mounting includes center shield
same as XV103
9B88 1243 9 contact; miniature; moldedblack
phenolic base; saddle mounting;
includes center shield andtube
shield base
9K849460 9 contact; miniature, molded mica
filled phenolic base; saddle
mounting; includes center
shield and tube shield base
same as XV100
9B87123 7 contact; miniature; molded black
phenolic base; saddle mounting;
includes center shield
same as XV108
same as XV108
same as XV108
same as XV108
same as XV108
9B86868 9 contact; miniature; molded black
phenolic base; saddle mounting;
includes center shield
same as XV108
9K857508
9K861367
FILTER
TU540S “PERMAKAY " IF Filter;
30 KC Channel Spacing
TU540W PERMAKAY'"' IF Filter;
60 KC Channel Spacing
TU540X “PERMAKAY" IF Filter;
120 KG Channel Spacing
>
CRYSTAL
NOTE
Crystals are part of the| Radio Set
model. When ordering & receiver
chassis only, crystals must be
ordered separately. Crystal type
number and operating frequency
must be specified when brdering
crystal.
CRYSTAL UNIT, quartz:
Receiver Control:
for 25-40 me carrier freq
wo 6 volt heater unit
Type RM14A|
r Type RP14A
or
Type RMI5A
rType RPI5A
for 40-54 mc carrier freq
includes 6 volt heater unit
'
Type G04 Receives IF; 5.955 me
/
AEPD-952-A (CE1645A)(CE056)
FREQUENCY RANGES Vi104
V{O5-A
(L) -25-30MC V403 Mipe 421 7 2ND. MIXER
RF 47(L) 47(L) RS TIMIXER 62(L) t/t) 5.5MC IST. LF AMPL. ie ve
(M) 30-40MC 6AK5 23 (M) .3/M) ‘6AB4 47(M) 1(M) 6BHE 47 7 4 1/2 6679/12ATT cise
(1) 40-50MC 120V C4, ./5(H OHH) C6), ./5(H AHH) 70v 82 (4 GHH) 9 47/4 BMH 2 aov
(HH) 50-54MC
L201
COIL
43 3 36 455KC
ps 2133 : LIO (Ads) L12(507) LIS(AGI) FILTER
Grol 6 . 60v [hapa f A a f i i (NOTE 5)
Gaal err a | 27(L) | hia
| eke || | 7 Litm) | cre cool j |
| Tro | a7) OS, 1] co] sof;
(HH) 4(HA) . ;
Y 201 (2-FREQ) YAO4 (4A-FREQ.) ets ——
; b Rito cia ar8 ai
! f
i]
c103 1 riz R2
90
1500 | 100K 18K | + a ais ios 1800 3300
Fy re RE ee S| 200 220k
2 ye
c108 = ==
“41A850841
CRYSTAL CLAMP
L4
ANTENNA COIL
46K848989
26K890035
TUBE SHIELD MOUNTING POST
~ag\ ys L5 | |
vAot Pz FIRST OSCILLATOR |
v201 ee (% vio2 6 a Fs
L2 ey NS,
R-F Coll —— > 264890034 hs
TUBE SHIELD
L6 NOT USED
OSCILLATOR NO. 1 OSCILLATOR NO. 2
36(H 8 HH)
Lg,
MULTIPLIER COIL
ES L8 I-F COIL oeh (oio7 -34y= 1 Zan clo ree ee ed aes ViO5-B
i i AO 2ND OSC
R-F COILS Vi03 Ton S24 ah [2 “tt O56
L4 8.2(H) Lio2 ae 2a ay 8.2(HH)
Sut
|
|
|
82tHH) |
|
|
|
|
|
LS I-F COIL |
:
|
|
L104
I-F cos" vio4 a Be
ES 22 RIO6 5% FREQ |
Lis LiO I-F COIL toFess- aan fap Se alae os
LOCAL OSCILLATOR IS ABOVE
BE SHIELD eee Tire eeal 7 [tee Rigor Pees = ce
USED NOT USE
TUBE SHIELD Li I- la (eey(L BELG ENEVION AYA INnANeEs [HH [NoT USED [used _] AUTO PINE TICS FREQUENCY ON H AND HH RANGES ae os ey ENE
V4A05 ; es (ee hen (METER SOCKET)
HI V 7oVv. 130V
A824763 ie (eiiGrsts:
CRYSTAL CLAMP . 00 io vies eT 14(866 ) el! F AMPL-2 L15 (B66 ) cra puab ee AMPL-3 ai EAS UARSY
. foo bk @ A5SKE LF AMPLA eo eat ‘ 455KC I maim) Bs : oro ' See
5 Arnie e |
IF CRYSTAL el Bat t 2 i eee | syn 7 | Eh a Pala . Va x, | ce .
264890034 ViO7 Ee vd 1 & 6 44V id}B 36 5! = | 36 | NOTE 5) _ : \
TUBE SHIELD = i Riek 2 j | Nels R28 RI26 | Pe Bis)
vi0o8 2lomw 82k io | 3 | | c140 1.5 270k ciaa_L Rizoe R129 | | 145 MEG 5
| con no Seo! roe “oF Sion | 6S ne Soa] Ti se oweh woxd sens | Ses | Tour our : me
Vi06 ~) ia Rizo orse eine ae 5% wr tr Sie BF WHT - BRN —*| Tse aah 5% lrg eee | WHT -RED-» Tr Te T if hs = (wore)
SS = 1500 : 138 <
Li4 ~ | L16 oe ie ae mllie 19 = = = = = TO PIN‘ — = = = = = u = TO PIN 2 = = => LHF avr 4 = Les $ I ee 1500 | '
I-F COIL J Li5 IFFCOILS 3 2 = ms (METER SOCKET) B+ (METER SOCKET) + ‘| ae
aa = B+ 5
Vii3 Vio9g NOISE FROM DISCR. heey Le ‘ rar vine
> A > NOISE AMPL GRID
Vi14 — :
BOTTOM VIEW OF CHASSIS vite V443 ? AUDIO FROM DISCR To vit |
vit vito mies wither ta Pe viens ts, Tin Laem, ams *
6BH6 6c4 = MEG, 4ST. AUDIO cag (METER SOCKET)
vAi2 er : Uptaiiles 4/2 6679/124TT J102-9 TO Vi14-
Vi5 cist 90v BLU. TIO1 YEL. S ‘ST. AUDIC
ai
1 C154 L AUDIO OUTPUT
‘ TO SPEAKER
44837078 moose. DISCRIMINATOR soe 1 sux } 3.2 onws
TUBE HOLD-DOWN SPRING aes oo PRIMARY 3102-10
s 44
Ci4i rise RI49 Sito C159
644840844 neP sacs 89
AUDIO LEVEL PLATE 46A855066
MOUNTING POST zu
FROM ViIO
2ND. LIM.
To
SQUELCH
CONTROL
B+ B+ 200
f(t)
(My
-52(4 AHH)
V1i04
5.5MC IST. LE
AMPL.
6BHE
Cui7
3
£11(5505)
55 =
acme
47(M)
47H GAH)
ViO5-A
62(L) ie 2ND. MIXER
(M) 1/2 6679/{2ATT
2
02 (HAHA) 60V
Rift R6
==> o— 1? I
= = cus
Th
B+ B+
C120
R203 os
OSCILLATOR NO. 2 39K | 1.0
a ar sv) ** | ci26
ar 47K
v2ol 5 1500 |
1ST OSC =
L20! 6CB6 7
t 4s = 6 65V
—2 e208 siax= \ Si
| Thy |
ic201 8.2/M)
8.2(H) c205 on
| B2imn) | y201 1203 L204 gga 20
| c208
| R202 12054 poo
| c206 20K SHS
2 % FREQ 2
R201 c207
68K [820
i Y? Locat osciLLATOR IS ABOVE 5% Ee ae
= = CARRIER FREQUENCY ON L AND @
M RANGES AND BELOW CARRIER
FREQUENCY ON H AND HH RANGES
——— SSS SS eee va
130¥ 46V 70v
vi08 39
14 455KC 1 F AMPL-3 = eS) BS oy Vi09 0149 VitO | E aA
‘ 6cB6 | | {ST LIM 2NOD. LIM |
) 5 i 24 5 c26 7 200
Z 1¢8 | 6BHE 7 6BU6 ) 2 a} ft 5 C2
= i C25 = 240 10 29
: 6. 40v 198 36 ; | 7oVv | se
TeV | “17 |
| | : ae R34 RI35 RI 2 R37 |
z 5 je RW c30
aes R02 R129 | ai | 145 MEG MEG +MEG 190K c180: 15K a Rt Tour
OtwF]. 120K 56K 33K | OtpF c148 cea eens 2
% C
5% { et ee WHT - RED aes 92 ae etl
19 , 2 3
= = = + a TO PIN 2 = = = = 47K 1500
pt (METER SOCKET) ae 1 =
Torn. if
>A
AUDIO FROM DISCR To viz
RI5O g v443 ViIG-A TIEN nee VA15 @ NOISE AMPL
(MEG S NOISE RECT eiteape 12 * Vii4-B POWER AMPL
ae or iy 1/2. 6679/12AT7 MEG. 4ST. AUDIO 6AQ5
1/2 6679/12ATT 102-9
a =e ciesie alm. Sov BLU. Tio__YEL.
RIS2 AUDIO OUTPUT
(NOTE 5) TO SPEAKER
% 3.2 OHMS
z AN 2 ok
3.3MEG ie r J102-10
A148 R149 CRIGT C159 C160
zane 220K $ 150K 2000 Otpe
B+ 200V
ae ae coed ba Pee |
RWG
82K
RUS
6.8K
8OV
a
>
WHT -GRN
ci22
TO Vi06
GRID
ic123
Totur
Vi05-B
2ND OSC
1/2 6679/A2AT7
455KC
FILTER
(NOTE 5)
Vatt
DISCR
6AL5
E101
R140 [= ee eee
| I
5
| |
| 100 47K |
~35V | |
4 = 4100
7 AUDIO
= LEVEL
CONTROL
(NOTES)
5% =
TO vil2
NOISE AMPL. GRID
>
GRN
TO PINS
(METER SOCKET) *
TO vi14-8
1ST. AUDIO
NOTES:
1.
ALL RESISTOR VALUES ARE INDICATED IN OHMS, 410%, 1/2 WATT
UNLESS OTHERWISE STATED. K= {000 OHMS.
ALL CAPACITOR VALUES ARE INDICATED
UNLESS OTHERWISE STATED.
IN MICROMICROFARADS
"y" HEATER IS 12.6 VOLTS,
ALL VOLTAGES MEASURED WITH A VTVM (B+ =200V) WITH SQUELCH AT
MINIMUM (COUNTERCLOCKWISE) AND DC VOLUME AT MAXIMUM (CLOCKWISE)
COMPONENTS NOTED DIFFER IN VALUE FOR THE VARIOUS RECEIVER MODELS
FOR WHICH THIS DIAGRAM IS APPLICABLE
REFER TO FOLLOWING TABLE FOR SPECIFIC INDENTIFICATION
MODELS
TRB {O82AD/TA235S-R2-M
TRBIO83AD/TA235S-R2-H
TRB {O84AC/ TA235W-R2-HH | TRB{O84AD/ TA2Z35S -R2-HH
ITRB{O81AC/ TA235 W-R2-L | TRBIO81AD/TA235S-R2-L | TA235X-R2
FILTER TUS40W TUS40S TUS40x
R25. 18K I 100K | 418k
R146 680 | 220 680
R152 560K | {MEG 560K
R39 56K I 180K 56K
R140 56K | 180K 56K
R143
TO PIN 4
(METER
1.5 MEG. SOCKET
‘a 5% C153
144
820k lk 1500
5% =
s102
BLU | METER
R142 == C152 SOCKET
200K ne
BLK Es
St a Dae en ET TIES
FROM Osc, <———- "<6
FROM DISCR. aT 5
FROM 4ST. LIM. i 4
FROM 2ND. IF. SGarmeraaa \
FROM OISCR. OUTPUT Sask 4
BLK.
FROM 10
AUDIO
OUTPUT 3
aT i "
FREQ. 1 < BRN.-WHT.
FREQ. 2 < BRN. GRN.
MOBILE
A ¢—SRN
RN.~ Yi
By FL, ee
O ¢ ORG.
Ri
B+ 200V Psi,
as oe:
LOCATED ON POWER SUPPLY
Y201
CRYSTAL HEATEK
Bo
Y104
CRYSTAL HEATER
0Bo +
V4
4
is a
viosS
~
Blanla . s|
jem
4500
v201 =
A 4 al 3
C204 ag
oT
vio2 is
a
170
opr T
vio NEC
a{nls } sf a {
vi0s
Cci6é6
ut
Lowe
CRYSTAL & HEATER
t af 13 { sf \s 4
ci72 ai Ri64 =
3900 | ¢ hh
vant vuis
4 or 3 Jt 4 3s :
vio3 Vi07
4 3 (ems
t 168 if I
vito owls vio8
ie sf ls
oo ry
4 } 4 3
vita
Tm!
TERMINAL IDENTIFIGATION SOTTOM VIEW
OF COILS
fo
COLOR CODE
atu s
TWO - FREQUENCY
TRB 1081AC/TA235W-R2-L 40 KC
TRB {O82AC/TA235 W-R2-M 40 KC
TRB 1O83AC/TA235 W-R2-H S0KC
TRB (084AC/TA235W- R2-HH| S0-54MC
TERMINAL BOARD
OR ADAPTER CHASSIS
Ye . Gy.
TRB (081AD/ TA235S -R2-L 25-30MC
TRB 1082AD/TA235S-R2-M 30-40MC
TRB 1083AD/ TA235S- R2-H 40-SOMC
TRB {O84AD/ TA235S -R2-HH|
TA235X-R2
20KC
50-54MC
25-S4MC
SRN WHT) _p pReo. 1
TO SWITGH
BERGEN) __p FREQ.2
GRN. G)
GRN-YEL { ) > “YT FIL
ORG.
B+ 200V
SQUELCH
CONTROL
10K
TRB1080/TA235 Two-Frequency Receiver
Schematic Diagram
Motorola No. 63E854953-G
11/5/59-RCS
Oro
O20
DESCRIPTION
‘stal: female;
square; molded
akelite base; chassis
4
rectangular; black
> base; chassis mounted
"requency
WSs
_ fixed: unless otherwise
110
lisc; 820 uuf +10%;
w
104
207
41,
5L except includes
C202
5M except includes
C202
5H except includes
C202
5HH except includes
b, CerAauys
101
102
103
102
xed: carbon; unless
ted
106
107
104
Y" IF Filter;
annel Spacing
Y'' IF Filter;
annel Spacing
Wik, Filter;
hannel Spacing
REFERENCE
SYMBOL
CRYSTAL
Y101
Y 102
Y¥201
MOTOROLA
PART No.
NOTE
Crystals are part of the Radio Set
model. When ordering a receiver
chassis only, crystals must be
ordered separately. Crystal type
number and operating frequency
must be specified when ordering
crystal.
CRYSTAL UNIT, quartz:
Receiver Control:
Type RM14A for 25-40 mc carrier freq;
or Type RPI4A includes 6 volt heater unit
or
Type RMI5A for 40-54 mc carrier freq;
or Type RPI5A includes 6 volt heater unit
Type G04 Receiver IF; 5.955 mc
same as Y101
CE 054
AA
MODEL TA234-C2
TWO FREQUENCY TRANSMITTER
MODEL CHART
MODEL NUMBER OF CRYSTALS
NUMBER FREQUENCIES REQUIRED
TTB1030AA/
TTB1030AB/ 2 tSURINTS LA
TA2Z34-C2
1. DESCRIPTION
The Model TTB1030AA/TA234is an FM radio
transmitter designedfor operation inthe 25-54 mc
band. Thetransmitter requires a separate power
supply to provide operating voltages. The r-f
power output of the transmitter is 25 watts or 50
watts, depending uponthe power supply used. The
MOTOROLA INC.
Engineering Publications
11/5/59-RCS
4501 W. Augusta Blvd.
+
TRANSMITTER
r-f carrier frequency is crystal-controlled for
maximum stability.
The basic transmitter components include a
crystal-controlled oscillator, an angular phase
modulator controlled by the MOTOROLA IDC
(instantaneous deviation control) circuit, three
stages of frequency multiplication, a final ampli-
fier and a ''T"' section harmonic filter.
The MOTOROLA IDC circuit limits the mod-
ulation deviation to 100 percent, The deviation
limit is set as required for the particular chan-
nel spacing application,
The TTB1030AB/TA234C2 is a two-frequency
version of the TTB1030AA/TA234 Transmitter.
This unit transmits signals ontwo specific crystal-
controlled frequencies inthe 25-54 mc band. Only
one frequency can be transmitted at atime. The
two-frequency transmitter is the same as_ the
single-frequency transmitter except for the addi-
tion of a second r-f oscillator deck and control
crystal. switch is required for
changingfrequencies. This switchpermits either
the frequency #1 or the frequency #2 oscillator to
function normally while itdisablesthe other. This
is done by grounding the oscillator cathode of the
stage being used. The oscillator cathode circuit
of ‘the: stage» not)-in use-is left.open,) iie.,) the
ground circuit is not complete. The two-fre-
quency switch is ordinarily incorporated into the
control unit used with the transmitter,
An external
The two-frequency transmitter can be op-
erated on frequencies which are separated by as
much as 300 ke from circuit resonance without
degradation of the single-frequency performance
specifications. The circuits of the two-frequency
transmitter are normally aligned to the higher of
the two carrier frequencies to be transmitted.
COMMUNICATIONS DIVISION
Chicago 51, Illinois
68 P854610-C
SCHEMATIC DIAGRAM PARTS LIST
21R114440
21R474461
21R400073
21R400072
21R2748
21R6631
21R114153
21R31493
21R475262
21R490602
21K83994
21K830201
21K881064
21R120437
21R400404
21K849334
21K847873
21K840711
21R400448
21K475679
21083959
Reference:
Schematic Diagram
43E854953-G
APACITOR, fixed: unless other-
wise stated
ceramic; tubular; 27 uuf 25%;
500 vdew
ceramic; tubular; 20 uuf 25%;
500 vdcew
ceramic; tubular; 8 uuf +. Suuf;
500 vdew
ceramic; tubular; 6 uuf +. Suuf;
500 vdew
molded silver mica; 200 uuf +10%;
500 vdcw
molded silver mica; 100 uuf +10%;
500 vdew
ceramic, tubular; #7 uuf +10%;
500 vdew
ceramic, tubular; 24 uuf #5%;
500 vdcew
Same as C1L
ceramic, tubular; 15 uuf #5%;
500 vdcw
ceramic, tubular; 10 uuf £5%;
500 vdcew
same as C1H
molded phenolic; tubular; .47 uuf
220%; 500 vdcw
molded phenolic; tubular; .3 uuf
#5%; 500 vdew
molded phenolic; tubular; .15 uuf
+5%; 500 vdew
same as C4H
ceramic; tubular; 33 uuf 25%;
500 vdcw
same as C1M
same as C3H
same as ClH
same c4L
same C4M
same C4H
same C4H
same as C1L
same as C3M
same as C1HH
ceramic; tubular; 4 cuf +5 uuf;
500 vdcew;
NOT USED
same as C4L
same as C1L
same as C3M
same as C3M
same as C1H
cer.; disc; 20 uuf 5%; 500 vdew
cer.; disc; 8.2 uuf; +. 5%; 500 vdew
same as C11M
same as C11M
molded silver mica; 51 uuf 25%;
500 vdcew
ceramic; tubular; 60 uuf +10%;
500 vdew
molded phenolic; tubular; . 82 uuf
210%, 500 vdcw
same as C4L
same as C4L
same as C4L
same as C13
molded; tubular; 1 uuf *.2 uuf;
500 vdew
same as C1l6L
same as C14L
same as Cl1L
MOTOROLA
PART No
21R87127
21K840048
21K840811
21K840812
215801139
21B800801
21K842041
21K840365
21B800801
21K837746
21K840812
21K847874
205840719
21K84247
21K837996
21K840711
MOTOROLA
PART No.
CAPACITOR, fixed: unless other-
wise stated CAPACITOR, fixed: unless other-
same as C13 wise stated
same as C13 8A892986 oil filled, tubular, .25 uf £20%;
same as C14L 400 vdew
same as C4L same as C30
same as C4L same as C30
same as C4L same as C30
same as Cl3 same as Cl24
same as C16L same as C30
same as Cl6L same as C30
sare as C1l4L same as C124
same as C1l4L NOT USED
same as Cl3 same as C103
ceramic, tubular; 36 uuf +5%; same as C30
500 vdew same as C30
same as C23 same as C103
same as C23 same as C124
molded silver mica; 240 uuf £5%; same as C30
500 vdew same as C101
ceramic; disc; 10 uuf 45%; same as C30
500 vdcw same as C1ll4
molded silver mica; 200 uuf £5%; 21K847601 molded silver mica; 1000 uuf £5%;
500 vdcew 500 vdew;
Bae STGae same as C103
ceramic; disc; .01 uf +80-20%; 21K840049 molded silver mica; phenolic
B00 Sane coated; 800 uuf 45%; 300 vdew
ceramic, disc; 1500 uuf GMV same as C30
+100% max. ; 500 vdcw 21Bi01029 ceramic. disc; .02 uf +80-20%;
same as C4L 500 vdcw
same as C4L same as C124
molded phenolic; tubular; . 36 uuf same as C156
5%; 500 vdew same as C104
same as C32H same as C30
ceramic, disc; 24 uuf 45%; 23K890624 electrolytic; tubular; 5 uf
500 vdew +100-15%; 150 vdew
NOT USED same as C30
ceramic; dise; 1500 uuf GMV same as er
+100%; max. ; 500 vdcw same as
ceramic; disc; 2000 uuf +10%; 8K85984 oil filled; tubular, .02 uf #20%;
500 vdcw 400 vdew
molded; silver mica; phenolic same as a
coated; 200 uuf #5%; 500 vdcw same as
same as C30
NOT USED C103
ceramic; disc; 12 uuf £5%, fee zs ons
500 vdew, NPO
C103 same as C103
Same as
11
variable: air; 8 uuf min. to 50 uuf same as Cll4
sees . CAPACITOR-RESISTOR ASSEMBLY:
molded phenolic, tubular, 2.2 uuf 21K842354 tubular; consisting of:
£10%; 500 vdew dual CAPACITOR; printed
same as C30 circuit, silver paint on
same as C104 ceramic form; each section
same as C104 100 uuf, 300 vdew
ceramic, disc; 3900 uuf; 410%, one RESISTOR; fixed; carbon;
500 vdew 47K 420%
same as C30
same as C103
same as C30 9A87120
same as Cll4
same as C103
same as Cl6L
same as C30 9B86864
same as C30
same as C30
molded silver mica; phenolic
coated; 51 uuf 5%; 500 vdew
same as C124
same as C103
NOT USED COIL,
NOT USED 24K824723 RF: Antenna, base stamped 723,
NOT USED includes 46K881276 CORE,
NOT USED ad,ustable tuning, coded
NOT USED ORANGE dot and CIL, C2L,
NOT USED Rl
NOT USED
CONNECTOR, receptacle:
female; single contact, round
molded mica filled phenolic
base, for 1/8'' diameter male
pin connector
female; 11 contact; polarized;
round molded black plastic
base, chassis mounted; does
not include 42A821428 RING,
connector retainer, which must
be ordered separately
MOTOROLA
PART No.
24K824722
24K825514
24K881365
24K831225
24K831224
24B825525
24K831366
24K831221
24K831220
24K825516
24K825515
24K824726
24B824336
24K824724
24K831367
24B855844
24B847871
COIL,
RF: Antenna; base stamped 722;
includes 46K881276 CORE,
ad ustable tuning; coded
ORANGE dot and CIM, C2M,
Rl |
RF: Antenna; base stamped 514;
includes 46K881276 CORE,
ad ustable tuning; coded
ORANGE dot and C1H, C2H,
Rl
RF: Antenna, base stamped 365;
includes 46K881276 CORE,
adjustable tuning; coded
ORANGE dot and C1HH, C2HH,
Rl
RF: Plate; base stamped 225;
includes 46K881276 CORE,
adjustable tuning; coded
ORANGE dot and C3L, R2
RF; Plate, base stamped 224;
includes 46K881276 CORE,
adjustable tuning, coded
ORANGE dot and C3M, R2
RF: Plate; base stamped 525,
includes 46K881276 CORE,
adjustable tuning, coded
ORANGE dot andC3H, R2
RF; Plate. base stamped 366;
includes 46K881276 CORE,
adjustable tuning; coded
ORANGE dot and C3HH, R2
RF; Coupling; base stamped 221;
includes 46K881276 CORE,
adjustable tuning, coded
ORANGE dot and C5L
RF: Coupling, base stamped 220;
includes 46K881276 CORE,
advustable tuning, coded
ORANGE dot and C5M
RF: Coupling; base stamped 516;
includes 46K881276 CORE,
adjustable tuning; coded
ORANGE dot and C5H
RF: Cou,ling; base stamped 515,
includes 46K881276 CORE,
adjustable tuning) coded
ORANGE dot and C5HH
RF: Mixer Grid; base stamped
726, includes 46K881276 CORE,
adjustable tuning, coded
ORANGE dot and C7L
RF: Mixer Grid; bage stamped
336, includes 46K881276 CORE,
ad ustable tuning, coded
ORANGE dot and C7M
RF: Mixer Grid; base stamped
724, includes 46K881276 CORE,
adjustable tuning} coded
ORANGE dot and C7H
RF: Mixer Grid; base stamped
367; includes 46K881276 CORE,
adjustable tuning; coded
ORANGE dot and C7HH
RF: Ist Oscillator; base stamped
BC7; includes 46K881276 CORE,
adjustable tuniny, coded
ORANGE dot and CllL,
cil2
RF: |st Oscillator; base stamped
AX4, includes 46K881276
CORE, adjustable tuning;
coded ORANGE dot and Cll,
C12
24K837228
24K830218
24K837470
24B825505
24B825507
24K837229
24K854048
24K840842
24K847869
24K847870
24B840042
28K8494 16
6R6031
6R5591
6R6407
COIL,
same as L5Mexc,inc.C11H, Cl2
same as L5Mexc.inc.CllHH, C12
NOT USED
same as L4L except Injection and
includes C10L
same as L4M except Injection and
includes C10M
same as LAM except Injection and
includes C10H
same as L3HHexcept Injection and
includes C10HH
IF: 5.5 mc IF - 1; base stamped
AF9; includes 46K891111
CORE, adjustable tuning;
coded LAV dot and C13, R4
: 5.5 mc IF - 2; base stamped
218; includes 46K891111
CORE, adjustable tuning;
coded LAV dot and C15
: 5.5 mec IF - 3, base stamped
AJ1, includes 46K891111
CORE, adjustable tuning;
coded LAV dot and C17, R5
: 5.5 mc IF - 4; base stamped
5505; includes 46K891111
CORE, adjustable tuning;
coded LAV dot and C18
: 5.5 mc IF - 5; base stamped
507. includes 46K891111
CORE, adjustable tuning;
coded LAV dot and C12
:5 5 mc IF - 6; base stamped
AG1; includes 46K891111
CORE, adjustable tuning;
coded LAV dot and C22, R7
: 2nd IF - 1; base stamped
BC6; includes 46K891110
CORE, adjustable tuning;
coded GRN dot and C23, R8
same as L14 except 2ud IF - 2
and includes C24, R9
IF: 2nd IF - 3, base stamped
ARQ; includes 46K891110
CORE, adjustable tuning;
coded GRN dot and C25, R10
RF: choke; 1,7 uh, coded
BLK-GRN dot
RF: choke; .5 uh; coded
BLK-VIO dot
RF: choke; 1 uh, coded RED-BLK
dot
same as L102
CONNECTOR, plug: male
single contact; round brown
bakelite wafer insulator;
cable mounted
RESISTOR, fixed: carbon, unless
otherwise stated
100K +10%; 1/2 w; ins
18K +10%; 1/2 w; ins
NOT USED
220K £10%; 1/2 w; ins.
same as Rl
same as R1]
same as R1
effective resistance 33K; consists
of: two (2) 6R6074 RESISTORS,
fixed; carbon; each unit
68K £10%; 1/2 w; ins.;
parallel connected
REFERENCE MOTOROLA
SYMBOL PART No.
6R6410
6R6428
6R6433
6R6397
6R6446
6R400076
6R6479
6R2049
6R401006
6R2089
6R6038
6R6069
6R6398
6R5644
6R5646
6R6117
6R6326
6R5553
6R6270
6R488095
6R5553
6R64 14
6R400228
6R5631
6R6046
6R6477
6R6048
6R401006
6R2061
6R5773
18K845110
6R6040
or 6R6270
6R5796
or 6R5587
6R6497
6R490110
6R6434
6R2097
6R400334
6R6475
ESISTOR, fixed: carbon; unless
otherwise stated
same as R8
33K £10%; 1/2 w; ins
6.8K £10%; 1/2 w; ins
2.2 meg +10%; 1/2 w; ins.
22K +10%; 1/2 w; ins.
4.7 meg 410%; 1/2 w; ins.
same as RI
Same as R4
39K 45%; 1/2 w; ins.
NOT USED
68K £5%; 1/2 w; ins.
120K 45%, 1/2 w; ins.
56K 45%, 1/2 w; ins.
same as R106
1.8K +£10%, 1/2 w; ins.
1.5K #£10%; 1/2 w; ins.
2.2K £10%; 1/2 w; ins.
150K £10%; 1/2 w; ins.
82K +10%; 1/2 w; ins.
same as R11
390K £10%; 1/2 w; ins
5.6K £10%, 1/2 w; ins
100 ohm #10%; 1/2 w; ins.
100K 5%, 1/2 w; ins.
220 ohm +10%; 1/2 w; ins
same as R114
NOT USED
same as R119
same as R113
18K +5%; 1/2 w; ins.; used only in
TA235W-R2 and TA235X-R2
100K +5%, used only in TA235S-R2
270K +10%; 1/2 w; ins.
NOT USED
1.5 meg 5%; 1/2 w; ins
same as R108
120K +10%; 1/2 w; ins.
same as R128
same as R119
same as R113
1 meg +10%; 1/2 w; ins.
same as R134
same as R119
15K +10%; 1/2 w; ins.
47K +10%; 1/2 w; ins.
56K; used only in TA235W-R2
and TA235X-R2
180K 45%; used only in TA235S-R2
same as R139
820K +10%;
variable: 200K 420%; 1/4 w
same as R128
same as R138
same as R113
680 ohm; used only in TAZ35W-R2
and TA235X-R2
220 ohm; used only in TA235S-R2
same as R113
same as R4
same as R4
same as R134
same as R13
560K 45%; 1/2 w; ins. used only
in TA235W-R2 and TA235X-R2
1 megohm +5%; 1/2 w; ins.; used
only in TA235S-R2
3.3 meg +10%; 1/2 w; ins.
3.9 meg +10%; 1/2 w; ins.
same as R110
27K £10%; 1/2 w; ins.
same as R156
6.8 meg #10%; 1/2 w; ins.
12 meg £10%; 1/2 w; ins.
680K +10%; 1/2 w; ins.
MOTOROLA
PART No.
6R6377
6R6378
1V 842353
25K847479
6BJ6
6AL5
6C4
6AQ5
1V857900
9B834083
9K87124
9B88 1243
9K849460
9B87123
9B86868
DESCRIPTION
RESISTOR, fixed: carbon; unless
otherwise stated
same as R1
47K 410%; 1/2 w; ins
same as R128
same as R120
56K 410%; 1/2 w; ins.
TRANSFORMER,
RF: discrim.; coded BLU dot;
inc. ; two 764821495 CORE,
adjust tuning, coded YEL dot
and C26, C27, C28, C29
C30, C31, R11, R12, R13
AF: output; 5000 ohm at 55 ma to
3 ohm
TUBE,
electron
electron
electron
electron
electron
electron
Same as
Same as
same as
electron
electron
Same as
electron
same as
electron
LINE, RF transmission:
assembly includes;
30B475378 CABLE, RF:
coaxial; RG-58A/U;
4" length required
Reference part P10]
SOCKET, tube: female;
7 contact; miniature; molded mica
filled phenolic base; saddle
mounting; includes center
shield and tube shield base
same as XV101
7 contact; miniature; molded mica
filled phenolic base; saddle
mounting includes center shield
same as XV103
9 contact; miniature; moldedblack
phenolic base; saddle mounting;
includes center shield andtube
shield base
9 contact, miniature, molded mica
filled phenolic base; saddle
mounting; includes center
shield and tube shield base
Same as XV1U0
7 contact; miniature; moldedblack
phenolic base; saddle mounting,
includes center shield
same as XV108
same as XV108
same as XV108
same as XV108
same as XV108
9 contact, miniature; molded black
phenolic base; saddle mounting;
includes center shield
same as XV108
MOTOROLA
PART Ne
9K857508
9K86 1367
stal: female;
square; molded
bakelite base; chassis
ted
2 contaqt; rectangular; black
phenplic base; chassis mounted
Components unique for Twp-F requency
Receiver Chassis are as follows:
c201L
Cc201M
C201H
C201HH
c2z02
C203
C204
C205
C206
C207 21B837745
c208
c209
c210
L201L
L201M
L201H
L201HH
L202
L203
L204
L205
R201
R202
R203
v201
XvV201
xY201
FILTER
CAPACITOR, fixed: unless otherwise
stated
same ap CLIL
same ap C11M
same ap C11H
Same ab C11HH
same ap C12
NOT USED
same ap C107
same ap C109
same ap C110
ceram disc; 820 uuf 410%;
500 Wdew
same ap C104
same a
same ap C4L
COIL,
same ap L5L except includes
C203L, C202
same ‘ap L5M except includes
C20]M, C202
same ap L5H except includes
C20}H, C202
same ap L5HH except includes
C20]HH, C202
same ap L101
same ap L102
same ap L103
same ap L102
RESISTOR, fixed: carbon; unless
otherwise jstated
same ap R106
same ap R107
same ap R104
TUBE,
same ap V102
SOCKET, tube:
same as XV101
SOCKET, [crystal:
same ap XY101
TU540S
TU540W
TUS540xX
“PERM. AY" IF Filter;
30 KC Channel Spacing
"PERM. AY" IF Filter;
60 KG Channel Spacing
“PERM. AY' IF Filter;
120 Channel Spacing
REFERENCE
SYMBOL
CRYSTAL
CAPACITOR, fixed: unless other-
wise stated
same as C13
same as C13
same as C14L
same as C4L
same as C4L
same as C4L
same as C13
same as C16L
same as Cl6L
Sa--e as C14L
same as C14L
same as Cl3
ceramic, tubular; 36 uuf 25%;
500 vdcw
same as C23
same as C23
molded silver mica; 240 uuf 25%;
500 vdcw
ceramic; disc; 10 uuf 25%
500 vdcw
molded silver mica; 200 uuf 45%;
500 vdcew
same as C28
ceramic; disc; .01 uf +80-20%;
600 vdcw
ceramic, disc; 1500 uuf GMV
+100% max. ; 500 vdcw
same as C4L
same as C4L
molded phenolic; tubular, . 36 uuf
25%; 500 vdcw
same as C32H
ceramic. disc; 24 uuf £5%;
500 vdew
NOT USED
ceramic, dise; 1500 uuf GMV
+100%; max. ; 500 vdew
ceramic; disc; 2000 uuf 210%,
500 vdcw
molded, silver mica; phenolic
coated; 200 uuf 25%; 500 vdew .
NOT USED
ceramic; disc; 12 uuf 25%,
500 vdcw, NPO
same as C103
variable: air; 8 uuf min. to 50 uuf
max.
molded phenolic; tubular. 2.2 uuf
£10%; 500 vdcw
same as C30
same as C104
same as C104
ceramic; disc; 3900 uuf; 10%,
500 vdcew
same as C30
same as C103
same as C30
same as Cll4
same as C103
same as Cl6L
same as C30
same as C30
same as C30
molded silver mica; phenolic
coated; 51 uuf 25%, 500 vdew
same as C124
same as C103
NOT USED
NOT USED
NOT USED
NOT USED
NOT USED
NOT USED
NOT USED
8A892986
21K847601
21K840049
21B301029
23K890624
8K85984
21K842354
9487120
9B86864
24K824723
CAPACITOR, fixed: unless other-
wise-stated
oil filled, tubular; .25 uf 220%;
400 vdew
same as C30
same as C30
same as C30
same as C124
same as C30
same as C30
same as C124
NOT USED
same as C103
same as C30
same as C30
same as C103
same as Cl24
same as C30
same as C101
same as C30
same as C114
molded silver mica; 1000 suf 25%;
500 vdew;
same as C103
molded silver mica; phenolic
coated; 800 uuf 25%; 300 vdew
same as C30
ceramic. disc; .02 uf +80-20%;
500 vdew
same as C124
same as C156
same as C104
same as C30
electrolytic; tubular; 5 uf
+100-15%; 150 vdew
same as C30
same as C104
same as C156
oil filled; tubular; .02 uf #20%;
400 vdew
same as C30
same as C103
same as C30
same as C103
same as C30
same as C103
sameasCll4
CA PACITOR-RESISTOR ASSEMBLY;
tubular; consisting of:
dual CAPACITOR; printed
circuit, silver paint on
ceramic form; each section
100 uuf; 300 vdcew
one RESISTOR; fixed; carbon;
47K 420%
CONNECTOR, receptacle:
female; single contact, round
molded mica filled phenolic
base, for 1/8" diameter male
pin connector
female, 11 contact; polarized;
round molded black plastic
base; chassis mounted, does
not include 424821428 RING,
connector retainer, which must
be ordered separately
COIL,
RF: Antenna. base stamped 723;
includes 46K881276 CORE,
ad ustable tuning. coded
ORANGE dot and CiL, C2L,
Rl
MOTOROLA
PART No.
24K824722
24K825514
24K881365
24K831225
24K831224
24B825525
24K831366
24K831221
24K831220
24K825516
24K825515
24K824726
24B824336
24K824724
24K831367
24B855844
24B847871
COIL,
RF: Antenna; base stamped 722;
includes 46K881276 CORE,
ad ustable tuning; coded
ORANGE dot and C1M, C2M,
Rl
RF: Antenna, base stamped 514;
includes 46K881276 CORE,
ad ustable tuning; coded
ORANGE dot and C1H, C2H,
R1
RF: Antenna; base stamped 365;
includes 46K881276 CORE,
adjustable tuning; coded
ORANGE dot and'C1HH, G2HH,
Rl |
RF: Plate; base stamped 225;
includes 46K881276 CORE,
adjustable tuning; coded
ORANGE dot and C3L, R2
RY: Plate; base stamped 224;
includes 46K881276 CORE,
adjustable tuning, coded
ORANGE dot and C3M, R2
RF: Plate; base stamped 525;
includes 46K881276 CORE,
adjustable tuning; coded
ORANGE dot and/C3H, R2
RF: Plate; base stamped 366;
includes 46K881276 CORE,
adjustable tuning) coded
ORANGE dot and C3HH, R2
RF: Coupling; base stamped 221;
includes 46K881276 CORE,
adjustable tuning; coded
ORANGE dot and C5L
RF: Coupling; base stamped 220;
includes 46K881276 CORE,
ad ustable tuning; coded
ORANGE dot and C5M
RF: Coupling; base stamped 516;
includes 46K881276 CORE,
adjustable tuning; coded
ORANGE dot and C5H
RF: Cou,ling; base stamped 515;
includes 46K881276 CORE,
adjustable tuning, coded
ORANGE dot and C5HH
RF: Mixer Grid; base stamped
726, includes 46K881276 CORE,
adjustable tuning; coded
ORANGE dot and C7L
RF: Mixer Grid; base stamped
336, includes 46K881276 CORE,
ad ustable tuning, coded
ORANGE dot and C7M
RF: Mixer Grid; base stamped
724; includes 46K881276 CORE,
adjustable tuning; coded
ORANGE dot and C7H
RF: Mixer Grid; base stamped
367; includes 46
adjustable tuning; coded
ORANGE dot and C7HH
RF: lst Oscillator; }
BC7; includes 46
adjustable tuniny
RF: |st Oscillator, base stamped
AX4, includes 46K881276
CORE, adjustable tuning;
coded ORANGE dot and Cll,
C12
881276 CORE,
base stamped
881276 CORE,
MOTOROLA
PART No.
24K837228
24K830218
24K837470
24B825505
24B825507
24K8 37229
24K854048
24K840842
24K847869
24K847870
24B840042
28K849416
6R6031
6R5591
6R6407
COIL,
same as L5Mexc.inc.C11H, Cl2
same as L5Mexc.inc.CllHH, C12
NOT USED
same as L4L except Injection and
includes CIOL
same as L4M except Injection and
includes C10M
same as L4M except Injection and
includes C10H
same as L3HHexcept Injection and
includes C10HH
IF: 5.5 mc IF - 1; base stamped
AF, includes 46K891111
CORE, adjustable tuning;
coded LAV dot and C13, R4
: 5.5 me IF - 2; base stamped
218; includes 46K891111
CORE, adjustable tuning;
coded LAV dot and C15
: 5.5 mc IF - 3; base stamped
AJ1, includes 46K891111
CORE, adjustable tuning;
coded LAV dot and C17, R5
: 5.5 mc IF - 4; base stamped
5505; includes 46K891111
CORE, adjustable tuning;
coded LAV dot and C18
: 5.5 mc IF - 5; base stamped
507, includes 46K891111
CORE, adjustable tuning,
coded LAV dot and C12
:5 5 mc IF - 6; base stamped
AGI, includes 46K891111
CORE, adjustable tuning;
coded LAV dot and C22, R7
: 2nd IF - 1, base stamped
BC6; includes 46K891110
CORE, adjustable tuning;
coded GRN dot and C23, R8
same as L14 except 2nd IF - 2
and includes C24, R9
IF: 2nd IF - 3; base stamped
ARQ; includes 46K891110
CORE, adjustable tuning;
coded GRN dot and C25, R10
RF: choke, 1.7 uh, coded
BLK-GRN dot
RF: choke; .5 uh; coded
BLK-VIO dot
RF: choke; 1 uh, coded RED-BLK
dot
same as L102
CONNECTOR, plug: male
single contact; round brown
bakelite wafer insulator;
cable mounted
RESISTOR, fixed: carbon, unless
otherwise stated
100K +10%; 1/2 w; ins.
18K £10%; 1/2 w; ins
NOT USED
220K £10%; 1/2 w; ins.
same as Rl
same as R1
same as RI
effective resistance 33K; consists
of: two (2) 6R6074 RESISTORS,
fixed; carbon; each unit
68K £10%; 1/2 w; ins. ;
parallel connected
MOTOROLA
PART No.
6R6410
6R6428
6R6433
6R6397
6R6446
6R400076
6R6479
6R2049
6R401006
6R2089
6R6038
6R6069
6R6398
6R5644
6R5646
6R6117
6R6326
6R5553
6R6270
6R488095
6R5553
6R64 14
6R400228
6R5631
6R6046
6R6477
6R6048
6R401006
6R2061
6R5773
18K845110
6R6040
or 6R6270
6R5796
or 6R5587
6R6497
6R490110
6R6434
6R2097
6R400334
6R6475
ESISTOR, fixed: carbon; unless
otherwise stated
same as R8
33K £10%; 1/2 w; ins.
6, 8K £10%; 1/2 w; ins.
2.2 meg £10%; 1/2 w; ins.
22K +10%; 1/2 w; ins.
4.7 meg +10%; 1/2 w; ins.
same as RI
same as R4
39K £5%; 1/2 w; ins.
NOT USED
68K #5%, 1/2 w; ins.
120K £5%; 1/2 w; ins.
56K £5%, 1/2 w; ins.
same as R106
1.8K +10%; 1/2 w; ins.
1.5K £10%; 1/2 w; ins,
2.2K £10%; 1/2 w; ins.
150K £10%; 1/2 w; ins.
82K +10%; 1/2 w; ins.
same as R11
390K +10%; 1/2 w; ins
5.6K 410%; 1/2 w; ins
100 ohm +10%, 1/2 w; ins.
100K +#5%; 1/2 w; ins.
220 ohm 410%; 1/2 w, ins.
same as R114
NOT USED
same as R119
same as R113
18K +5%; 1/2 w; ins.; used only in
TA235W-R2 and TA235X-R2
100K +5%; used only in TA235S-R2
270K +10%; 1/2 w; ins.
NOT USED
1.5 meg #5%; 1/2 w; ins
same as R108
120K £10%; 1/2 w; ins.
same as R128
same as R119
same as R113
1 meg +10%; 1/2 w; ins.
same as R134
same as R119
15K £10%; 1/2 w; ins.
47K +10%; 1/2 w; ins.
56K; used only in TA235W-R2
and TA2Z35X-R2
180K +5%; used only in TA235S-R2
game as R139
820K +10%;
variable: 200K 420%; 1/4 w
same as R128
same as R138
same as R113
680 ohm; used only in TA235W-R2
and TA235X-R2
220 ohm; used only in TA2Z35S-R2
same as R113
same as R4
same as R4
same as R134
same as R13
560K 45%; 1/2 w; ins. used only
in TA235W-R2 and TA235X-R2
1 megohm +5%; 1/2 w; ins.; used
only in TA235S-R2
3.3 meg +10%; 1/2 w; ins.
3.9 meg #10%; 1/2 w; ins.
same as R110
27K £10%; 1/2 w; ins.
same as R156
6.8 meg £10%; 1/2 w; ins.
12 meg +10%; 1/2 w; ins.
680K +10%,; 1/2 w; ins.
MOTOROLA
PART No.
6R6377
6R6378
1V842353
25K847479
6BIJ6
6AL5
6C4
6AQ5
1V857900
9B834083
9K87124
9B88 1243
9K84 9460
9B87123
9B86868
DESCRIPTION
RESISTOR, fixed: carbon; unless
otherwise stated
same as Rl
47K +10%; 1/2 w; ins.
same as R128
same as R120
56K +10%; 1/2 w; ins.
TRANSFORMER,
RF; discrim.; coded BLU dot;
inc. ; two 764821495 CORE,
adjust tuning, coded YEL dot
and C26, C27, C28, C29
C30, C31, R11, R12, R13
AF: output; 5000 ohm at 55 ma to
3 ohm
TUBE,
electron
electron
electron
electron
electron
electron
Same as
same as
same as
electron
electron
same as
electron
same as
electron
LINE, RF transmission;
assembly includes;
30B475378 CABLE, RF:
coaxial; RG-58A/U;
4" length required
Reference part P101
SOCKET, tube: female;
7 contact; miniature; molded mica
filled phenolic base; saddle
mounting; includes center
shield and tube shield base
same as XV101
7 contact; miniature; molded mica
filled phenolic base; saddle
mounting includes center shield
same as XV103
9 contact; miniature; moldedblack
phenolic base; saddle mounting;
includes center shield andtube
shield base
9 contact, miniature, molded mica
filled phenolic base; saddle
mounting; includes center
shield and tube shield base
sane as XV1UV0
7 contact; miniature; moldedblack
phenolic base; saddle mounting;
inciudes center shield
same as XV108
same as XV108
same as XV108
same as XV108
same as XV108
9 contact; miniature; molded black
phenolic base; saddle mounting;
includes center shield
same as XV108
FILTER
MOTOROLA
PART No.
9K857508
9K861367
21B837745
TU540S
TU540W
TU540xX
DESCRIPTION
NOTE
Crystals are part of the Radio Set
model. When ordering a receiver
chassis only, crystals must be
ordered separately. Crystal type
number and operating frequency
must be specified when ordering
P| mete ee "rant ne
CRYSTAL
crystal.
CRYSTAL UNIT, quartz:
Receiver Control:
for 25-40 mc carrier freq;
includes 6 volt heater unit
Y101
Type RM14A
rType RP14A
or
Type RMI5A
xr Type RPI5A
for 40-54 mc carrier freq;
includes 6 volt heater unit
¥102 Type G04 Receiver IF; 5.955 me
; 820 uuf 10%;
same as Y101
: carbon; unless
Y" IF Filter;
Channel Spacing 1
GUARANTEED PERFORMANCE SPECIFICATIONS
BASIC UNIT TTB1030AA/TA234 Series (25-54 mc)
RF POWER
OULEUA
25 watts, 30 watts or 50 watts - depending upon power supply used.
CRYSTAL Twelve (12) times
MULTIPLICATION
POWER SUPPLY Separate transistorized power supply operating from a 12 volt dc
positive or negative ground source.
SPURIOUS AND All spurious and harmonic emissions are attenuated more than 60 db,
HARMONIC EMISSION below carrier level.
FREQUENCY oven type crystal unit maintains carrier within +0.0005% of assigned
STABILITY AND center frequency from -30 C. to +60 C. ambient (+25 C. reference)
TEMPERATURE
RANGE
MODULATION 40F3: +15 kc deviation for 100% at 1000 cycles
20F3: + 5 kc deviation for 100% at 1000 cycles
factory connection: 0.25 volt +3 db for 100% modulation at 1000 cps
(approximately -17 db)
optional connection: 0.18 volt +3 db for 100% modulation at 1000 cps
(approximately -20 db)
(1) 6AK6 - Oscillator (1-Freq. ) - Doubler Driver
TUBE COMPLEMENT or (2) 6AK6 Oscillator (2-Freq. ) - Power Amplifier
AND FUNCTION (1) l2ZAT7 - Mod. Buffer-Doubler -I.D.C. Amplifier
6AK6 Tripler - Clipper
NUMBER OF 9 following the modulator including 3 double permeability tuned
TUNED CIRCUITS multiplier stages, a multiple adjusted output circuit and an output
harmonic filter.
DIMENSIONS 2-3/8'' wide x 5-1/4" high x 15" long
WEIGHT 3-3/4 lbs,
SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE.
F.C.C. License Designation: CC1008
2. CHASSIS COMPLEMENT
The Model TTB1030AA/TA234 single-frequen-
cy transmitter chassis consists of the following
items:
One Model TU548 Single-Frequency Trans-
mitter basic chassis, which includes:
One TK119 Coil Kit
The coil kit used depends upon the assigned
frequency of the transmitter. The coil kit
model number is assigned a letter suffix symbol.
Refer to the parts list in back of the transmitter
schematic diagram for a complete list of coil kit
designations,
One type RN3-A Control Crystal is required
for use with this transmitter. The crystal isa
| crvstac |
OSCILLATOR
GAK6 I
| V201 i
BUFFER-
jaa os MODULATOR DOUBLER
bid bya th YM 12aT7 4 Mp t2aT?
Vi01 v102 V102
AUDIO
AUDIO. | AMPLIFIER CLIPPER
INPUT 6BH6 6AL5
V106 V107
LEGEND—
NOTE:
separate item and is not included as part of the
transmitter. See the FOREWORD of this manual
for ordering information.
The Model TTB1030AB/TA234-C2 two-fre-
quency transmitter chassis includes a Model
TU548-C2 Basic two-frequency transmitter chas-
sis; however, the same coil kitis usedin the two-
frequency modelas forthe single-frequency model.
Two type RN3-A Control Crystals are re-
quired for use with the two-frequency transmit-
ter. The crystal is a separate item and is not
included as part of the transmitter. See the
FOREWORD of this manual for ordering infor-
mation,
3. CIRCUIT OPERATION
Stage-by-stage signal flow and operating
frequencies are shown on the transmitter block
diagram.
DOUBLER POWER
TRIPLER
6AK6 DRIVER ey aes
V103 Vi05 sarge
v201 USED ON TWO FREQUENCY MODELS ONLY.
fos OSCILLATOR FREQUENCY
fc=CARRIER FREQUENCY
fo# 12
fe=12fo
fo=2083.3-4500.0 KC.
fe* 25-54 MC.
a. Audio Input and Amplifier Stage
Refer to the diagram below for a simplified
illustration of the audio input circuit.
(1) Circuit Paths |
There are two circuit paths involved in
the transmitter audio input circuit. These are:
(a) microphone dc input, and, (b) microphone
audio output.
(a) Microphone Dc Input
The microphone dc input (called
"talking current") is taken from a B+ voltage
source in the transmitter. A resistor network
dropsthe microphone dc voltage to approximately
15 volts dc. A relatively large capacitor is con-
nected across the circuit to provide additional
filtering. The dc path leads through two resis-
tors, Rl and R2, tothe microphone. These re-
Sistors drop the voltage to about 4 volts at the
The dc path leads through the
returning to ground
microphone input.
microphone’ cartridge,
through the cable shield.
B+
TAP SET TO POS. 4 (0.25V).
IS REQUIRED.
+45V_ MIC. DCG
“MICROPHONE _—*
(SEE NOTE 2) |
INTERIOR DETAILS OF THIS
BOX SHOWN BELOW.
MICROPHONE DETAILS FOR MOBILE
TRANSMITTER USING TRANSISTOR
PRE- AMPLIFIER.
AUDIO INPUT DETAILS FOR REMOTE CONTROLLED
(b) Microphone Audio Output
The microphone acts like a voltage
generator inthe circuit. Sound waves received
by the microphone element vary the voltage in
accordance withthe voice frequency and intensity.
This results in voltage changes at the microphone
output as a person speaks into the microphone.
There are two ''audio sensitivity"
taps in the microphone output circuit. As it is
shipped from the factory, the circuit is wired so
that position 1 tap is used. The lower tap, posi-
tion 2, connects the full output to the trans-
mitter audio amplifier input. However, the cur-
rently produced MOTOROLA microphones develop
a sufficiently high audio input level to provide
full transmitter deviation across resistor R2.
Placing the tap on the other side of R2 permits
a lower microphone level to operate the trans-
mitter. Generally speaking the position 1 tap
is used for all base station and mobile applica-
tions in current production. The position 2 tap
canbe used if greater audio sensitivity is required
in special applications.
SHIPPED FROM FACTORY WITH AUDIO SENSITIVITY
USE POS.2 (0 18V) IF GREATER SENSITIVITY
TRANSMITTER EXPLANATION
AUDIO
AUDIO PATH AMPLIFIER 1. ae 1S A SIMPLIFI FUN
IAGRAM. SEE SCHEMATICS FOR EXACT
Po ae DETAILS.
POS.4 (0.25 V)
| 2. CARBON PALM-TYPE MIC. ACTS LIKE VARIABLE
| APPROXIMATELY RESISTOR. NEW DYNAMIC MIC. IS A DIRECT
0.48V INPUT
REQUIRED FOR
FULL DEVIATION.
REPLACEMENT. DYNAMIC ELEMENT
GENERATES AUDIO VOLTAGE.
IN BASE STATIONS THE AUDIO INPUT
DETAIL BLOCK REPLACES THE MIC. BLOCK.
2
DIAGRAM 63C849939
AUDIO
7+ SHIELD
BASE STATION TRANSMITTERS
REMOTE CONTROL
CONSOLE
|
[MICROPHONE
DYNAMIC
[ELEMENT
LINE
CONTACTS CLOSED
WHEN P-T-T BUTTON
IS PRESSED.
AMPLIFIER
AUDIO LINE TO
BASE STATION
|
|
|
[ey
SIMPLIFIED AUDIO INPUT
BASE STATION
REMOTE CON-
TROL CHASSIS
0.25V
INPUT)
630849939
The microphone audio outputis con-
nected through a coupling capacitor to the grid of
the transmitter audio amplifier. The signals are
then passed through the IDC circuit and used to
modulate the transmitter.
(2) Microphone and Audio Input Details
The boxed-in detail in the lower left
hand side of the diagram shows the mobile trans-
mitter application. This is an enlarged drawing
of the microphone shown in the upper half of the
diagram. The audio output shown in the detail
connects to the lower end of R2, the same as
shown for the microphone output.
The dynamic microphone incorporates
a transistorized pre-amplifier which brings the
output up to the 0.25 volt level. The microphone
dc input supplies the current for energizing the
transistor.
b. IDG Circuit
To, trace the IDC circuitry refer to Sche-
matic Diagram 63E854612 which is part of this
section,
The incoming signals from the audio ampli-
fier, aré coupled to the clipper tube. The clipper
stage limits the amplitude of the signals which
pass on to the modulator stage. The clipping
level is set so that some clipping of peaks will
occur in the normal input signal. Signals applied
to the clipper below the clipping level are unaf-
fected by the clipper; signals which exceed the
clipping level are clipped at the top and bottom.
A small amount of clipping producesa trapezoidal
waveform; a large amount of clipping produces a
square wave (see Fig. 1).
The clipper output is integrated, producing
an approximately triangular waveform. The ap-
proach to the triangular shape depends upon the
amount of clipping; the more clipping, the nearer
the output approaches the triangular form,
The integrating network has the additional
function of limiting signal amplitude in propor-
tion to signal frequency. As the frequency in-
creases, the amplitude is reduced in proportion,
DEV. LIM
CIRCUIT OUTPUT
AUDIO CLIPPER
LEVEL OUTPUT
LOW,
BELOW CLIPPING
NORMAL,
SLIGHT CLIPPING
HIGH,
CLIPPED TO
TRAPEZOIDAL FORM
VERY HIGH,
CLIPPED TO
SQUARE WAVE
Figure 1.
Effect of Clipper and Integrator on
Sine Waves of Different Amplitudes
The integrator output is amplified and ap-
plied to the IDC control, which limits the ampli-
tude of the signals which reach the modulator.
The IDC control limits deviation by controlling
the maximum slope (or steepness) of the signal
wavefront which reaches the modulator (see
Fig. 2).
Figure 2,
How IDC Control Sets Steepness of
Integrated Square Wave
In the incoming signal from the microphone,
wavefront steepness depends upon both ampli-
tude and frequency. The over-all effect of the
IDC circuitry is to place a barrier upon the max-
imum wavefront steepness which can pass into
the modulator. The slope of high amplitude sig-
nals is controlled by clipping and integrating the
square waves which they produce. The slope of
high frequency signals is limited to the allow-
able maximum by reducing theamplitude of these
signals (Adjustment of the IDC control is covered
in a subsequent paragraph of this instruction
section).
c. Modulator Stage to Power Output Stage
pallette ale a Re a,
The crystal oscillator generates a specific
frequency in 2.083 to 4.500 mc range. The exact
frequency depends uponthe assigned carrier fre-
quency. The oscillator output is sent to the modu-
lator stage where the voice modulation is impres-
sed upon it. This signal is combined inthe modu-
lator to provide a modulated output at the crystal
frequency. The modulator output is sent to the
first doubler where the signals are amplified and
doubled in frequency. They are further ampli-
fied and tripled in frequency in the tripler stage
and doubled once more inthe doubler-driver. The
doubler-driver stage develops the required signal
power to drive the final amplifier to its rated
output RF power. The signals reaching the final
amplifier have been multiplied twelve times from
the original frequency generated by the oscil-
lator.
4. ADJUSTMENT OF THE IDC CONTROL
Correct setting of the IDC control is an im-
portant factor in the overall operation of the
two-way radio communication system. The cor-
rect settings are as follows:
Deviation
For 120 kc channel spacing .. +15 kc
For 40 kc channel spacing .. +15 kc
For 20 kc channel spacing .. + 5 kc
The actual measurement of transmitter de-
viation involves two important considerations:
First: the accuracy of the test equipment
being used.
Second: understanding the characteristics
of the test equipment.
a. Test Equipment
In this text we shall use the MOTOROLA
F4M-24B Series Frequency Monitor as the basic
test instrument. This unit offers the degree of
accuracy required for measurement of transmit-
ter deviation,
b. Instrument Characteristics
In using the F4M-24B Series Frequency
Monitor it is important to understand the action
of the meter. The meter movement actually re-
sponds to average voltage. The meter scale,
however, is calibrated in terms of peak voltage
based on a sine wave signal. When the input
waveform departs from a pure sine wave the
meter reading does not indicate the true energy
level of the signal. This energy level can be
expressed as the ratio of average voltage to peak
voltage of the incoming waveform. If this value
is above the value for the sine wave, the meter
reads high; if this value is below the sine wave
value, the meter reads low.
c. Use of Oscilloscope
An oscilloscope can be used along with the
frequency monitor to set the IDC control accu-
rately. The oscilloscope is a highly reliable de-
viation indicator since it is instantaneous in
action and the peak reading is unaffected by the
waveform. It is strongly recommended that an
oscilloscope be used wherever it is available. If
no oscilloscope is available refer to the ALIGN-
MENT PROCEDURE CHART for setting of the
IDC control by means of the frequency monitor
alone.
Set up the ‘equipment as described in the
MEASUREMENT section of the frequency moni-
tor manual. Connect the scope across the dis-
criminator output as shown in Diagram 69B810633
in the frequency monitor manual. Modulate the
transmitter with a 1000 cps tone connected across
the microphone input terminals at the transmit-
ter. Connect an AC VTVM across these termi-
nals also.
Calibrate the 'scope as follows: Turn the
IDC control to the full clockwise position. Ad-
just the tone modulation level for a reading of 10
kc, deviation on the monitor deviation meter.
With a sine wave pattern on the screen use the
vertical gain control to set the overall height to
a convenient size, e.g., 10 full squares on the
screen. This calibrates the 'scope for a reading
of 1 square for each kc. deviation.
Increase the tone level to a minimum of one
volt at the audio input terminals. Now turn the
IDC control slowly counterclockwise until the
height of the pattern represents the required
transmitter deviation (15 kc. for 40 kc. or 120 kc.
channel spacing, 5 kc. for 20 kc. channel spacing
operation).
5. ALIGNMENT PROCEDURE
The transmitter is tuned and adjusted for its
exact operating frequency prior to shipment from
the factory. Unless damaged or abused in transit
it should require no further adjustment before
placing it in service, other than to align the final
RF amplifier stage to the antenna. If alignment
is required, refer to the alignment procedure in
this section.
Any 0-50 microampere meter with an equiv-
alent series resistance of 20000 ohms may be
used as a metering device. The meter should be
connected from chassis ground to the pin recep-
tacle of the metering socket corresponding to the
stage being measured. Refer to the schematic
diagram for specific metering pin receptacle
information.
FINAL METER READINGS
Each time a transmitter is aligned or tested, final meter readings should be made and entered in
a logbook.
All readings given in the table below are minimum except PA, which is maximum. DO NOT ex-
ceed the value given for the PA current. This is the maximum plate current to which the unit can be
safely tuned.
Readings 1 through 6 are purely relative and do not give actual current or voltage measurement,
When using the P-8500 or the P-8501 series test sets, position? is ad-c voltmeter with 1000 volts
full scale. Actual B+ reading is obtained by multiplying the microampere scale reading by 20. The
TU546 series test sets have a 0-1000 volt d-c scale from which the B+ is read directly.
When using the P-8500 or the P-8501 series test sets, position 8 indicates d-c relay control volt-
age when the transmitter is not keyed. Multiply the microampere scale reading by 0.3 to obtain the
actual value of the d-c voltage. When using the TU546 series test sets, the relay control voltage is
read directly with the position selector switch in position 10.
For all three series portable test sets, multiply the scale reading by 5 to obtain the actual PA
plate current in milliamperes.
P-8500 &
SWITCH P-8501 SERIES
POSITION
TU546 SERIES
30 WATTS
METER
READING 50 WATTS
Transmitter Alignment Procedure
Motorola No. EPD-950-C
11/5/59-RCS
ok WN
aD
ADM hw
PRE-ALIGNMENT NOTES
EXCERPTS FROM FCC REGULATIONS
Radio transmitters may be tuned or adjusted only by duly authorized radio operators or by per-
sonnel working directly under their supervision.
The RF power output of a station shall be no more than required for satisfactory technical oper-
ation considering the area to be covered and the local conditions.
TEST EQUIPMENT REQUIRED
MOTOROLA Portable Test Set (P-8500 series, P-8501 series or TU546 series)
MOTOROLA K-9322 Alignment Tool Kit
MOTOROLA T1100A Series Frequency Monitor (for oscillator alignment and deviation adjust-
ment)
RF wattmeter or dummy antenna
Power Supply (preferably the one designed for the transmitter under test)
HOW TO SET UP THE P-8500 SERIES AND THE P-8501 SERIES TEST SETS
Connect the dummy antenna or r-f wattmeter to the transmitter ANT. jack.
Connect the test set cable plug to the transmitter METER jack.
Place the test set REC. - XMTR. -0-50 UA switch in the XMTR. position.
Place the GRID CURRENT-METER-FIELD STRENGTH switch in the METER position.
Connect the power supply to the transmitter as shown on the intercabling diagram for the equip-
ment.
If the power supply chassis has a HI-LO switch place it in the LO position.
Turn the equipment on. Allow 30 seconds for the tubes to warm up.
HOW TO SET UP THE TU546 SERIES TEST SET
Connect the dummy antenna or r-f wattmeter to the transmitter ANT. jack.
Connect one end of the metering cable to the test set and the other end to the transmitter METER
receptacle.
Place the Function Selector Switch in the XMTR. position.
Place the oscillator and meter reversing switch in the OFF position.
Connect the power supply to the transmitter as shown on the intercabling diagram for the radio set.
Place the HI-LO switch on the power supply in the LO position.
Turn the equipment on, Allow 30 seconds for the tubes to warm up.
TEST SET SWITCH POSITIONS
P-8500 &
P-8501
Series
Doubler
Circuit Driver
Metered Grid
HOW TO KEY THE TRANSMITTER
Use the XMTR-ON switch of the test set to place the unmodulated carrier on the air for meter
reading and adjustment.
Use the MOTOROLA TU353A Microphone (or equivalent) to key the transmitter and modulate the
carrier as required.
CAUTION
Do not key the transmitter for more than a few seconds at a time until
it is properly tuned. Plate current is excessive in untuned stages and
may damage the unit. Turn the transmitter on for brief periods while
reading the meter and making the adjustments.
FREQUENCY CALCULATIONS
fy =+&where: fy = crystal frequency, and fe = carrier frequency
12
IDC CONTROL SETTING
Set up T1100A Series Frequency Monitor for voice modulation measurement. (If an oscilloscope is
available see text for IDC setting using the scope.)
Turn transmitter on and modulate with 1000 cps tone,
Adjust the IDC control (R127) on the transmitter chassis until the MODULATION DEVIATION
meter on the station monitor reads as outlined in the following paragraphs.
(a) When the transmitter is intended for operation on a 40 ke or 120 ke channel spacing, the
IDC control should be adjusted for an approximate 17 kc reading on the station monitor
MODULATION DEVIATION METER. Note that the MODULATION DEVIA TION METER
reads average voltage but is calibrated in peak voltage. The setting of 17 kc corresponds
to a peak of 15 kc.
(b) When the transmitter is intended for operation on a 20 kc channel spacing, the IDC control
should be adjusted for an approximate 5-1/2 kc reading on the station monitor MODULATION
DEVIATION METER,
STEP 3
ir
TRIPLER
ONINAL Wd
STEPS 5,687
2
ANTENNA COUPLING
C4120
TRIMMER
C424
150 ma
SERA
C104 SWITCH POS,
OSCILLATOR TU546 METER
TEST SET ADJUSTMENT READING STAGE, CONDITIONS AND PROCEDURE
C101 Maximum OSCILLATOR. Place the HI-LO switch in the LO position. Adjust only when
On-frequency primary or secondary frequency standard is available (MOTOROLA T1100A Series
may be used). Set up frequency monitor. Loosen locknut, adjust C101 for ''on-
frequency" reading on monitor. Tighten locknut.
a1 Maximum BUFFER-DOUBLER. Adjust primary slug from bottom. Adjust secondary slug
from top. The circuit frequency is two times the crystal frequency.
STEP 2 T2 Maximum TRIPLER. Adjust primary slug from bottom. Adjust secondary slug from top.
pen The circuit frequency is six times the crystal frequency. Repeak Tl with the
meter switch in position 4.
BUFFER-DOUBLER Seasons
T3 Maximum DOUBLER-DRIVER. Adjust primary slug from bottom. Adjust secondary slug
from top. Tune for a definite peak. The meter will always show the fixed bias
in this position. A definite peak reading indicates proper alignment. The cir-
STEP 4 cuit frequency is twelve times the crystal frequency.
nOCoten OBER C120, Minimum POWER AMPLIFIER. Loosen locknuts on C120 and C121. Set ANT. TRIMMER
C121 (Dip) C121 for minimum plate current. Turn COUPLING adjustment (LZ) fully counter-
clockwise (decoupled). Tune C120 for a dip. Set power supply HI-LO switch to HI.
C121 Maximum ANTENNA INPUT. Adjust ANT. TRIMMER C121 for maximum meter reading.
c120, Maximum RF ANTENNA COUPLING. Remove test load and connect antenna
e121, Output 1. Using field strength meter:
L2 Make adjustments with transmitter shieldedas muchas possible by housing.
NOTE Place RF probe near antenna. Adjust C121 and COUPLING (L2) for maxi-
DO NOT EXCEED mum RF indication on meter. Do not exceed 150 ma.
2. Without field strength meter:
Turn COUPLING (L2) counterclockwise, increasing gradually while retuning
C120 for dip. Increase coupling until only a slight dip is apparent.
DO NOT overcouple. This causes the dip to disappear and reduces power
output. Recheck setting of C121. DO NOT EXCEED 150 ma.
Repeak Tl, T2 and T3. Tighten locknuts on C120 and C121.
ANTENNA TRIMMER
SHEPSS
if
TRIPLER
>
>
4
c
Zz
Zz
io
SHERI
STEPS 5,687
SEPA
C104 SWITCH POS,
OSCILLATOR TU546 METER
TEST SET READING
Maximum
On-frequency
Maximum
Maximum
TI
BUFFER-DOUBLER
STEP 4
T3
DOUBLER-DRIVER
Minimum
(Dip)
Maximum
STAGE, CONDITIONS AND PROCEDURE
OSCILLATOR. Place the HI-LO switch in the LO position. Adjust only when
primary or secondary frequency standard is available (MOTOROLA T1100A Series
may be used). Set up frequency monitor. Loosen locknut, adjust C101 for ''on-
frequency" reading on monitor. Tighten locknut.
BUFFER-DOUBLER. Adjust primary slug from bottom. Adjust secondary slug
from top. The circuit frequency is two times the crystal frequency.
TRIPLER. Adjust primary slug from bottom. Adjust secondary slug from top.
The circuit frequency is six times the crystal frequency. Repeak Tl with the
meter switch in position 4.
DOUBLER-DRIVER. Adjust primary slug from bottom. Adjust secondary slug
from top. Tune for a definite peak. The meter will always show the fixed bias
in this position. A definite peak reading indicates proper alignment. The cir-
cuit frequency is twelve times the crystal frequency.
POWER AMPLIFIER. Loosen locknuts on C120 and C121. Set ANT. TRIMMER
C121 for minimum plate current. Turn COUPLING adjustment (L2) fully counter-
clockwise (decoupled). Tune C120 for a dip. Set power supply HI-LO switch to HI.
ANTENNA INPUT. Adjust ANT. TRIMMER Cl21 for maximum meter reading.
Maximum RF
Output
NOTE
DO NOT EXCEED
150 ma
2
ANTENNA COUPLING
C120
TRIMMER
C124
ANTENNA TRIMMER
ANTENNA COUPLING. Remove test load and connect antenna.
l. Using field strength meter:
Make adjustments with transmitter shieldedas muchas possible by housing.
Place RF probe near antenna. Adjust C121 and COUPLING (L2) for maxi-
mum RF indication on meter. Do not exceed 150 ma.
Without field strength meter:
Turn COUPLING (L2) counterclockwise, increasing gradually while retuning
C120 for dip. Increase coupling until only a slight dip is apparent.
DO NOT overcouple. This causes the dip to disappear and reduces power
output. Recheck setting of C121. DO NOT EXCEED 150 ma.
Repeak Tl, T2 and T3. Tighten locknuts on C120 and C121.
FINAL METER READINGS
Each time a transmitter is aligned or tested, final meter readings should be made and entered in
a logbook,
All readings given in the table below are minimum except PA, which is maximum. DO NOT ex-
ceed the value given for the PA current. This is the maximum plate current to which the unit can be
safely tuned.
Readings 1 through 6 are purely relative and do not give actual current or voltage measurement.
When using the P-8500 or the P-8501 series test sets, position7 is ad-c voltmeter with 1000 volts
full scale. Actual B+ reading is obtained by multiplying the microampere scale reading by 20. The
TU546 series test sets have a 0-1000 volt d-c scale from which the B+ is read directly.
When using the P-8500 or the P-8501 series test sets, position 8 indicates d-c relay control volt-
age when the transmitter is not keyed. Multiply the microampere scale reading by 0.3 to obtain the
actual value of the d-c voltage. When using the TU546 series test sets, the relay control voltage is
read directly with the position selector switch in position 10.
For all three series portable test sets, multiply the scale reading by 5 to obtain the actual PA
plate current in milliamperes.
P-8500 &
SWITCH P-8501 SERIES
POSITION
TU546 SERIES
30 WATTS
METER
READING 50 WATTS
Transmitter Alignment Procedure
Motorola No. EPD-950-C
11/5/59-RCS
AEPD-2776-O
44A8508
CRYSTAL CLA
Y 201 (2-FRE
V2
26K8900
TUBE SHIE
ED iN OHMS AND ARE 110% 1/2 WATT
ICROMICROFARADS UNLESS OTHERWISE x.
V4
R AUDIO SENSITIVITY IS REQUIRED. REFER TO
OR FURTHER DETAILS. 33.
HODE CIRCUIT USED ONLY ON SINGLE 34
1ES COMPONENTS ARE INCORPORATED ON
TWO - FREQ. UNITS (REFERENCED C207)
Q@. UNITS (REFERENCED C105).
EMPLOYED FOR THE HH FREQUENCY RANGE.
T DETAILS APPLICABLE TO THIS FILTER.
RTS LIST FOR THE SPECIFIC IDENTIFICATION
RMONIC FILTERS.
STs
ATION. REFER TO TK449ML COIL KIT PLRTS
38.
TRIPLE
39,
UTRALIZING CAPACITY INHERENT IN CIRCUIT.
V 40 IL KIT PARTS LIST FOR COMPONENT 40.
4.
s) 42.
43.
TTS) 44.
45B83040
SHIELD COVE
ATIONS ANU 200 FOR 30-54 MC. APPLICATIONS.
ICATIONS. AND 400K FOR 40-54MC. APPLICATIONS.
133 (420) IS REMOVED AND REPLACED WITH
Ci2
TRIMME
00 OHMS. 30.
POSITION 4 AS SHIPPED FROM THE FACTORY. 32.
35.
36.
VAR
NOTES:
VOLTAGE AND RESISTANCE READINGS ARE NOMINAL VALUES AND MAY VARY? 26%.
ALL VOLTAGE AND RESISTANCE READINGS ARE TAKEN WITH RESPECT TO GROUND
MEASUREMENTS TO BE MADE WITH A VTVM.
V201 IS EMPLOYED ON 2-FREQUENCY MODELS ONLY.
READINGS TAKEN WITH Ad MEG RESISTOR IN SERIES WITH METER LEAD.
MICROPHONE IN CIRCUIT.
VOLTAGE READINGS FOR VIO @ Vi02 ARE TAKEN WITH FREQUENCY SWITCH.IN
APPLICABLE POSITION ON 2 FREQUENCY UNITS.
THIS READING IS 100V FOR 40-54 MC OPERATION OR (GOV FOR- BB>40 Mo
OPERATION.
THIS READING |S 25V FOR 40-54 MC OPERATION OR 36V FOR 25-40MC OPERATION
THE TRANSMITTER 1S CONNECTED TO THE POWER SUPPLY WHILE READINGS
ARE TAKEN.
ALL TUBES IN SOCKETS AND METERING TEST SET NOT CONNECTED.
NO FILAMENT VOLTAGE APPLIED TO UNIT AND NEGATIVE PROBE OF OWMMETER CONNECTED
TO GROUND.
THIS READING WILL VARY WITH ADJUSTMENT OF Ri27.
MICROPHONE NOT IN CIRCUIT.
AN INITIAL LOW READING MAY BE OBTAINED AT-MANY POINTS DUE TO THE CHARGING OF
CAPACITORS IN THE POWER SUPPLY. ALLOW CAPACITORS TO CHARGE YO OBTAIN FULL
READINGS.
43 ONMS FOR | AND 2 FREQUENCY OPERATION WITH FREQUENCY SWITCH IN APPLICABLE
POSITION.
THIS READING IS 420K FOR 40-54 MC OPERATION OR SOOK FOR 25-40MC OPERATION
MODEL TABLE
TTBIO34AB / TA234—-C2L
TTBIO32AB / TA234-C2ML
TTBtO34AB/ TA234—-—C2HL
TYBIO35AB/ TA234—C2HM
TTBIO36AB / TA234—C2HH
i
yeaa
TTBIOS3AB/ TA234-C2MM | 2 |
ote
(oes
eee
Models TTB1030AA/TA234 and
TTB1030AB/TA234-C2 Transmitters
Schematic Diagram
Motorola No. 63E854612-E
11/5/59-RCS
A Pilsen Gli tow
44A85084{
CRYSTAL CLAMP
46K848989
MOUNTING POST vit
TRIMMER
ANTENNA TRIMMER
LEGEND FREQUENCY Rance: OSCILLATOR | ViO2 A vio2B8
L*25-30mc .
Y 201 (2-FREQ.) Y404 (4-FREQ.) Miso-tene. Hs 36 some GAKE me CmaATT ait tc, aa TRIPLER
os 6AK6 vio4
ig BurreR-OOURLER TRIPLER T2 (NOTE (1) saaner ry ais § TS (NOTE 4)
v 204 Viol ses 240V A = = : pha OOUBLER— ORIVER
CIOS(IFR.) et on 33 ew ae == WOTE 33
26K890035 vio2 : Notes nére® |
TUBE SHIELD c1o7
+ ov ov
i}
33 ech) 700K
V107 644840759 b v101 e101 . wos rE * |
COVER PLATE ae Ts wey | ta aa |
MOTE 43 il
26A 890034 " " | RI29 Lioe Wee, |
TUBE SHIELD R427 ("IDC" CONTROL) 0
|
I RE
ViO6 A C103 Lior _— NOTE (6
150 4.2MN
BUFFER -DOUBLER : a ee |
!
| = |
TR PLER iis FRE. gros : | 9 “re hares 0%
IPLE LE We a Aaa By a ae ! 1M
les is [L nove 5 ee
v404 DOUBLER-DRIVER 1 | c109-8
in wet be
jal
260v ini
Vi06 poet vio7 RIO3
er Mic 0c A a ena CLIPPER t
BED weerssl Ss ae ! 6AL5
a, eee es oe age SF
MO.2 FREQ. OSC. CIRCUIT v201 qev | | hoe
l NOTES CSS eLATOR 2 ON a ote aI H | 80K
i}
i |
| | :
15B830403 | i Sed : ee Rs :
SHIELD COVER | eo ree eae | ae Lee @ Sct
| + + 4 ; ‘ *
z eit ctl a =
om L2 | | A sf 23 2 §, ge ] 4 : |
3 Al Ruled aele ie | | ite sob 7 Fees Ff HER s ges = ff a a gE
BR\Z al SAE al ge sy? | g| cle 3 se et) Soa &
a: | cone rp gh a Ja 43 4% | a 5
aia 5 C124 | Porte t-t-t-4-+-4-
l ‘ 2 3 4 5 6 7 8 s 10 “ 42 “3 4 “ | 4 5 e 7 s : "
| | TB-2 TERMINAL BOARD ON POWER SUPPLY
vio3
Tot mgt weg
IPLER
RIPLE vio4 ViOS “7° FILTER (NOTE 7) Se |
DOUBLER — DRIVER POWER T" SECTION HARMONIC FILTER (N
TRIPLER T2 (MOTE (1) 6AQ5 DOUBLER — DRIVER AMPLIFIER aa Se |
c---ooOCr er 210v cc CO 6146 '
ar 2038 90V(SOWATTS) oo AORN ; |
205K 4 edt =a iy FILAMENT
NOTE 33 ° NOTE 33 400V (30 WATTS) ' WIRING
co
cou hl CRYSTAL
5 NOTES cao HEATER
Wi 220 (30 WATTS) B5-335 Ae yen mar OF Y201
4 208v (30 WATTS) PA TUN NOTE W ~ 8
¥ (sowarTs) ri @ ANTENNA (ie. ee See oe > SCHEMATIC
§ Bi | eae \ CRYSTAL HEATER ORES vee
WOTES ~60 (sowaTrs) | 4 \] ae per | OF Yio1 { ALL RESISTOR VALUES ARE INDICATED IN OHMS AND ARE t10% 4/2 WATT NOTES
448357 8 UNLESS OTHERWISE STATED. K*1000 OHMS 30. VOLTAGE AND RESISTANCE READINGS ARE NOMINAL VALUES AND Mat VARY? 26%.
2. ALL CAPACITOR VALUES ARE IN MICROMICROFARADS UNLESS OTHERWISE MALL VOLTAGE AND RESISTANCE READINGS ARE TAKEN WITH RESPECT TO GROUND
RNG TA-140 STATED. MEASUREMENTS TO BE MADE WITH A VTVM
5.8K ANT. TRIMMER
2w z . CAPACITOR CIZE IS CONNECTED TO POSITION { AS SHIPPED FROM THE FACTORY 32. V201 |S EMPLOYED ON 2-FREQYENCY MODELS ONLY
CONNECT TO POSITION 2 IF GREATER AUDIO SENSITIVITY IS REQUIRED. REFER TO
R202 wore THE TRANSMITTER INSTRUCTIONS FOR FURTHER DETAILS 3A READINGS TAKEN WITH A4 MEG RESISTOR IN SERIES WITH METER LEAO.
----wew--U- GROUND CONNECTION IN VIO4 CATHODE CIRCUIT USED ONLY ON SINGLE 34 MICROPHONE IN CIRCUIT.
R108 3 ne 56-2W FREQUENCY MODELS.
| 3.9% 1300 NOTE 16 ig 3S VOLTAGE READINGS FOR VIOi ® VIO2 ARE TAKEN WITH FREQUENCY SWITCH IN
_ DASHED CIRCUITRY AND 200 SERIES COMPONENTS ARE INCORPORATED ON APPLICABLE POSITION ON 2 FREQUENCY UMITS
=F
Mbt t hella fel af 36, THIS READING IS 100V FOR 40-54 MC OPERATION OR (SOV FOR: EB+40 Mo
‘ CAPACITOR NOTED [S tSMMF FOR TWO-FREQ. UNITS (REFERENCED C207) OPERATION.
AND IS 20MMF FOR SINGLE —FREQ. UNITS (REFERENCED CIOS)
See a euCyIMANGE: 37 THIS READING |S 25V FOR 40-54 MC OPERATION OR SEV FOR 25-40MC OPERATION
‘A UNIQUE PI JON FILTER IS EMPLOYED FOR THE HH FREQUENCY RANGE.
Pe REFENTT OG DETRICENSRDREGMMEEST Ge vAlls. APPLICARCE. Fo reuIneiCee THE TRANSMITTER I$ COMMECTED TO THE POWER SUPPLY WHILE READINGS
PA RELAY REFER TO THE TK49 COIL KIT PARTS LIST FOR THE SPECIFIC IDENTIFICATION ARE TAKEN.
SCREEW | eo Fapeie OF COMPONENTS USEO IN THE HARMONIC FILTERS
TB2-9 DETAIL "B
Pi SECTION HARMONIC . USED ONLY FOR 30-35MC. OPERATION. REFER TO TKIVSML COIL KIT PERTS
| FILTER FOR HH RANGE ust.
waren 38 ALL TUBES IN SOCKETS AND METERING TEST SET NOT CONNECTED.
persis et To NI OC 39 NO FILAMENT VOLTAGE APPLIED TO UNIT ANC NEGATIVE PROBE OF OMMMETER CONNECTED
-GBe THIS SYMBOL INDICATES NEUTRALIZING CAPACITY INHERENT IN CIRCUIT TO GROUND
‘on’
REFER TO THE TKS SERIES COIL KIT PARTS LIST FOR COMPONENT 40. THIS READING WILL VARY WITH ADJUSTMENT OF R«27.
IDENTIFICATION 4 MICROPHONE NOT IN CIRCUIT
HI B+(B++): 400 VOLTS (30 bail dal 42 AN INITIAL LOW READING MAY BE OBTAINEQ AT-MANY POINTS DUE TO THE CHARGING OF
TOS VOLTS, (60 WETS CAPACITORS IN THE POWER SUPPLY. ALLOW CAPACITORS TO CHARGE TO OBTAIN FULL
READINGS
AUDIO AMP
vio 43 (3 OMMS FOR ( AND 2 FREQUENCY OPERATION WITH FREQUENCY SWITCM IN APPLICABLE
6BHE POSITION
BIAS VOLTAGE: -23 VOLTS (30 WATTS)
-36 VOLTS (SOWATTS) 44 THIS READING IS 420K FOR 40-54 MC OPERATION OR SOOK FOR 25-40MC OPERATION
= RS)
« 8
oe ae PA SCREEN SOURCE VOLTAGE: #75 VOLTS
BOTTOM VIEW tah CLIPPER TRIPLER
fe) is) 6ALS 6AKE -
> = MODEL TABLE
” o tT
a1 8 2 t2 ONE FREQUENCY | suFFix| Two FREQUENCY | surrex | FREQUENCY
rd Ts —— —
a =o pos © te) Ea pe mth =e TTBIOMAA/TAZS4L | 4 «|| TTBIONMAB/TAZ34-c2L__| 2 | 25-30mCc |
ee = we ee ee =i) ee Pie A DOUBLER 15. R32 1S 680 FOR 25-30 MC APPLICATIONS ANG 200 FOR 30-54 MC. APPLICATIONS TTBIOS2AA / TA2S4ML TTBIO3S2AB/ TA234—C2ML
mS eee Ae = S € # .« BLE
rn ¢ pee Lael 3 16.R6 IS 220K FOR 25-40 MC. APPLICATIONS. AND (OOK FOR 40-54MC. APPLICATIONS [ TYS(OSSAA/TAz3emm | i | TTBIOSSAB/ TA234-c2MM | 2 | 35—40MC
t f 3 SACS Gia 17 ON TWO-FREQUENCY MODELS, R133 (120.,) IS REMOVED AND REPLACED wiTH Yroos4aa/Tazsen_ |__| Trevoseas/Tazs4-c2m [2 |
z a o sf s} FG a z eR 7 CRYSTAL R202(56.n). TTBIOSSAA/TAZS4HM | ( | TYBIOSSAB/TAZ34—c2Hm | 2 |
z ww x z fala al Sl = =! a ae ELEMENT T TYMOSGAA/TAZ34HN | 4 | TTSIOSGAB/TAZ34-C2HH | 2 |
° z ys a | a ie 5 ai Z3 3} wl
2 sg =@ 3 =) Ts a i ae ae See) vai 2 =| vs
Ss = a = wlo Zio «| = Slo = 7 1 1 1 s Pe Ay Yor
I ea! a Ss a sr aH = tere =z] | =z] &) zl a HEATER
mae a 6s @ > = =| 2Z 2 2 ee = = = = = > & CRYSTAL
4 ye 6! C8 z < =, i a] 6 < = A ae
= al wy 6F ° a =z «| = oS o a ct+if+- = _ pee t 4
| ee ’ I
‘ 2 3 « s 6 7 8 s 1 “ 412 “a 4 ss 4 5 6 7 6 9
TERMINAL BOARD ON POWER SUPPLY '
TB-2
Models TTB1030AA/TA234 and
TTB1030AB/TA234-C2 Transmitters
Schematic Diagram
Motorola No. 63E854612-E
11/5/59-RCS
‘7
Be ed
"low fp Os
ove ;
g E
“¢
Pe? ty
har
.
Of 7156-4
UE 7F76(GO-G
TRANSISTORIZED POWER SUPPLY
ait
TU588
POWER SUPPLY
1. INTRODUCTION
The TU588 is a fully transistorized power
supply with a commonemittercircuit. It provides
all the plate, screen and bias voltages required by
the mobile radio transmitter and receiver. The
transistorized circuitry replaces the vibrator
circuits commonly used in mobile radio appli-
cations,
a. Basic Principle
The transistor circuit of the power supply is
essentially a single-pole, double-throw switch,
operating back and forth continuously, This
MOTOROLA INC.
Engineering Publications
11/5/59-RCS
4501 W. Augusta Blvd.
=].
TRANSISTORS AND POWER SUPPLY
COMPONENTS
ON RADIO SET FRONT PANEL
switching action interrupts the flow of battery
current throughthe power supply transformer pri-
mary. Interrupting the dec gives the effect of a=c
and the transformer windings step upthe voltages
as required for the rectified outputs.
The input is connected tothetransistor emit-
ters. The opposite ends of the transformer are
connected to the transistor collectors, which al-
ternately open and closethe circuit to the d-c in-
put. The current flows first through one transistor,
then through the other, giving the effect of an
alternating current, This circuit effectively dupli-
cates the actionofa vibratorandis usedto replace
the vibrator circuit.
COMMUNICATIONS DIVISION
Chicago 51, Illinois
68P856461-B
SCHEMATIC DIAGRAM PARTS LIST
REFERENCE MOTOROLA
SYMBOL PART No.
21K813512
21K2733
21K2768
21R38223
21R482328
21K86392
21R470324
21K6638
21R892897
21K2753
21R891167
Reference:
Schematic Diagram
63E854612-E
CAPACITOR, fixed: unless other-
wise stated :
ceramic; rectangular; 68 uuf
+10%; 450 vdew
same as C1L
molded silver mica; 30 uuf
+10%; 500 vdew
molded silver mica; 20 uuf
+10%; 500 vdew
ceramic; tubular; 10 uuf +5%;
500 vdew
NOT USED
ceramic; tubular; 30 uuf 5%;
500 vdcw
ceramic; tubular; 16 uuf +. 75 u
500 vdew
same as C2ML
ceramic; tubular; 6 uuf +1 uuf;
500 vdew
same as C2HL
NOT USED
same as C2L
same as C2ML
same as C2ML
same as C2HL
same as C2HL
NOT USED
molded mica; 1000 uuf +20%;
300 vdew
same as C4
NOT USED
ceramic; tubular; 8 uuf +. 5 uuf;
500 vdcw
NOT USED
NOT USED
NOT USED
NOT USED
same as C6ML
NOT USED
NOT USED
molded silver mica; 3.3 uuf
+. 5 uuf; 500 vdew
same as C7HL
NOT USED
ceramic; tubular; 12 uuf +5%;
500 vdcew
NOT USED
NOT USED
same as C7HL
same as C7HL
NOT USED
same as C4
same as C4
NOT USED
same as C6ML
NOT USED
NOT USED
NOT USED
NOT USED
same as C2ML
NOT USED
NOT USED
NOT USED
NOT USED
NOT USED
same as C4
same as C1IHM
NOT USED
NOT USED
NOT USED
NOT USED
MOTOROLA
PART No.
21K474952
21A478274
21K410062
21R6506
21K410061
21K410060
21R38932
21R474330
21K803488
194830230
21K840047
21K837746
21K2768
21R83198
21B800801
CAPACITOR, fixed: unless other-
wise stated
NOT USED
ceramic; tubular; 4 uuf +. 5 uuf;
500 vdew
molde¢\; tubular; 2.2 uuf +20%;
500 vdew
same as C1ISML
NOT USED
same as C15L
NOT USED
molded silver mica; 170 uuf +5%)
500 vdcw
molded silver mica; 150 uuf +5%;
500 vdcew
molded silver mica; 130 uuf 5%;
500 vdcw
molded silver mica; 110 uuf 5%;
500 vdew
same as Cl16HL
NOT USED
ceramic; tubular; 24 uuf +5%;
500 vdcw
ceramic; tubular; 20 uuf +5%;
500 vdcw
same zs C17L
same 2s C17ML
same as Cl17ML
NOT USED
NOT USED
NOT USED
NOT USED
NOT USED
NOT USED
moldec silver mica; 40 uuf +3%;
500 vdcew
NOT USED
NOT USED
NOT USED
NOT USED
NOT USED
same as C8L
NOT USED
NOT USED
NOT USED
NOT USED
NOT USED
same as C18HH
NOT USED
NOT USED
NOT USED
same as C15L
NOT USED
NOT USED
NOT USED
NOT USED
NOT USED
same as C15L
NOT USED
NOT USED
variable: air; 4,1 uuf min.
-21.9 uuf max.
same as C8L
dipped silver mica; 150 uuf +5%;
500 vdcw
ceramic; disc; 2000 uuf +10%;
500 vdew
molded silver mica; 20 uuf +10%;
500 dew; used only in l-freq.
model; replace with C207 in
2-freq. model
ceramic; tubular; 51 uuf +5%;
500 vdcew
same an C7HL
ceramin; disc; .0015 uf GMV
+100% max; 500 vdew
REFERENCE MOTOROLA
SYMBOL PART No.
23K892117
21A801139
21K845214
21K2727
19B830246
19A830291
23K890624
21B401029
8K836753
21K6720
21R410115
23K857384
21R41867
6A832263
9487120
9A880881
59K854405
24K832226
24K832077
CAPACITOR, fixed: unless other-
wise stated
electrolytic; tubular; 3 section;
consisting of:
20 uf +100-10%; 25 vdew;
section
O 10 uf +50-10%; 450 vdew;
section
O 10 uf +50-10%; 450 vdew;
section
ceramic; disc; .01 uf +80-20%;
600 vdew
same as C110
dipped silver mica; 510 uuf +5%;
300 vdew
same as C108
same as C110
same as C105
same as C110
same as C110
molded mica; 1000 uuf +20%;
2000 vdcew
same as C118
variable: air; 5.5 uuf min.
-33. 5 uuf max.
variable: air; 7. 1 uuf min.
-140 uuf max.
same as C
…[truncated]