Document text
MAINTENANCE BOOK
for MODEL FM-9
FREQUENCY METER
DEVIATION METER
SIGNAL GENERATOR
SINGER
INSTRUMENTATION
MAINTENANCE BOOK
for MODEL FM-9
FREQUENCY METER
DEVIATION METER
SIGNAL GENERATOR
Rev. 3/67
SINGER д.а ала clechonic instumente fer measurement
INSTRUMENTATION
.. 5 iti:
Panoramic REESE
THE SINGER COMPANY * METRICS DIVISION
*A Trademark of THE SINGER COMPANY
WAR RANDY
THE SINGER COMPANY, METRICS DIVISION, warrants each new instrument to be free from
defects in material and workmanship, effective after delivery to the original purchaser as follows:
Sensitive Research” Electrical Indicating Instruments
Other Electrical and Electronic Measuring Instruments
Repair or replacement (at our option) without charge (F.O.B. factory) will be effected when our
examination satisfactorily indicates that defects are due to workmanship or materials. Electron
tubes, semiconductors, batteries, fuses, lamps, thermoelements, and RatioTran* potentiometers
are excluded from warranty coverage. Warranty returns must first be authorized by the factory.
If the instrument or any portion thereof, has been abused, misused, damaged by accident or
negligence, or if any serial number or seal has been removed or altered, the warranty is void.
This warranty is in lieu of all other obligations or liabilities expressed or implied and The Singer
Company neither assumes, nor authorizes any person to assume for them, any other liability
in connection with sales of instruments manufactured by The Singer Company, Metrics Division.
THE SINGER COMPANY • METRICS DIVISION
915 PEMBROKE STREET, BRIDGEPORT, CONNECTICUT е 3211 S. LA CIENEGA BLVD., LOS ANGELES, CALIFORNIA
ЗА Tredomarh of THE SINGER COMPANY
REPAIR AND MAINTENANCE
Instruments should be returned only on prior written authorization from the Singer Representa-
tive or the factory"). Warranty repair will be made upon written request. Please provide the fol-
lowing information in order to expedite our processing of your instrument:
1. Model or Type 5. Approximate date instrument was placed in operation
2. Serial Number 6. Approximate number of hours of use
3. Description of trouble(2 7. Has maintenance action been previously requested?
4. Test instruments used 8. Other comments
Upon receipt of this information our Service Department will send you service data or shipping
instructions. Upon receipt of shipping instructions forward the instrument to the factory prepaid.
If requested, an estimate of charges will be made before work begins.
(1) Contact Metrics Division, Bridgeport, Connecticut for Empire*, Panoramic*, and Sensitive Research* instruments.
Contact Metrics Division, Los Angeles, California for Gertsch* instruments.
(2) Include data on symptoms, measurements taken, suspected location of treuble, maintenance action taken, and any other relevant data.
106/ 200
Section
I INTRODUCTION ИИА ТУЫ IMEEM, л
II FIELD MAINTENANCE КЕТЕР УЗ ГИЙН.
III ӨНОР;МАТМИБМАМОНИЯЕ УАТ КЗ ТАУЫ А
IV MAINJCHASSIS И ee n EY Me LO A. ОСА А.
V *LOW FREQUENCY OSCILLATOR А1615 ..........
TABLE OF CONTENTS
нз
go
ga
oO
VI *DISCRIMINA TOR 11603976 ОЕА OR.
Vú *SWEEP GENERATOR AND BUFFER A1616 .........
VIII *PHASE DETECTOR AND SWEEP САТЕ А1614 ......
IX *300 KHZ AMPLIFIER AND LIMITER А1602 .........
X +SPIKE GENERATOR ALGOS iis ОИТ Er
XI ЖЕНЕООЕМСХНИТҮЛЭЕН5ГАТ ОТИ И E A Aa
XII *ORYSDABROSOIBEBATOBROXEOIT оао И,
XIII *POWERSUREEYSALOOS и OTT RNAs s
1
| RA RA mA аа ары
XIV *HIGH FREQUENCY OSCILLATOR А1604 ...........
ху KAUDIO АТООСУ I ХА era zo seq) ge atis
XVI *kME GACY CLEIMULTIP LIER А16057/2:2220222....
XVII *400 ТО 500 KHZ MIXER AND AMPLIFIER А1613
ХУШ *MEGACYCLE SELECTOR А1607
XIX *100 KHZ SELECTOR A1610
XX £1 KHZ OSCILLATOR Ido CS
*Each section includes a schematic, parts location view, parts
list, and circuit description.
1 GeneraliSpeciticattonsq$ зано о пох ооа
LIST OF ILLUSTRATIONS
Figure
1-1 Моде МЕОИ ы а aov CN Rise ан
3-1 Test pontus eem sue кл лал лж є в
4-1 interconnection Diasramai К УСЕ
4-2 Component Location Front Вапе!!...............
4-3 Componenti Location Baek Panel l o e se e s ga oua as
4-4 Component Location M TopiGhassis <...
4-5 Component Location, Bottom Chassis ............
4-6 Component Location, Tuning Capacitors ..........
4-7 Component Location, Tuning Capacitors ...........
5-1 Schematic (Low Frequency Oscillator) ............
5-2 Component Location (Low Frequency Oscillator) .....
6-1 Schematic оет нина vue e prn o oe» xe
6-2 Component Location (Discriminator)..............
7-1 Schematic (Sweep Generator and Buffer) ...........
7-2 Component Location (Sweep Generator and Buffer) Ж
8-1 Schematic (Phase Detector and Sweep Gate) .........
8-2 Component Location (Phase Detector and Sweep Gate) ..
8-3 Phase Detector Wavetorms оц ue e e y «аг» а
9-1 Schematic (300 KHZ Amplifier and Limiter).........
9-2
LIST OF TABLES
Component Location (300 KHZ Amplifier and Limiter) ..
ка ва къ = кз Oo کد O; Q > Со ГО S
'
қ» Со № н O І
15-1
1-1
—. rd
= м
go
Ф
有
e
со cO CO со CO -1 -1 O» СЗ Q сл нъ нъ нъ н> LPP Pw
r
E ка N) = = = = = = = ра EQ СО ч О сл оо»
ii
Figure
10-1
10-2
10-3
.11-1
11-2
12-1
12-2
13-1
13-2
14-1
14-2
15-1
15-2
16-1
16-2
17-1
17-2
18-1
18-2
18-3
19-1
19-2
20-1
20-2
LIST OF ILLUSTRATIONS (CONT)
Schematic, (Spike Generator) MA n n
Component Location (Spike Generator) ...........
Modulation Circuit Waveforms ...........
Schematic (Frequency Dividers) ..........
Component Location (Frequency Dividers) ..........
Schematic (Crysta Oscilator) КЕТУ
Component Location (Crystal Oscillator) ....
Schematic (Power Supply) ос їг...
Component Location (Power Supply) .......
Schematic (High Frequency Oscillator) .....
Component Location (High Frequency Oscillator)
бспешайс! (Апато) ие ure ИЕТ
Component Location (Audio) m TTC
Schematic (Megacycle Multiplier) ...............
Component Location (Megacycle Multiplier) .........
Schematic (400 to 500 KHZ Mixer and Amplifier)
Component Location (400 to 500 KHZ Mixer and
Amplifier)
Schematic (Megacycle Selector) .........
Component Location (Megacycle Selector) ...
Phase Lock Bridge Waveforms ..........
| Schematic (100 KHZ Selector) ............
Component Location (100 KHZ Selector) .....
бспетанс E лот БЕЛЛ СЕЙ
e б © © 9 5
eee eee
е ебе о ©
......
oe eo © © ө
ө o ә. өө ө
ооо
oe © © © т»
......
Раре
10-1
10-1
10-3
11-1
11-1
12-1
12-1
13-1
13-1
14-1
14-1
15-1
15-1
16-1
16-1
17-1
17:17
18-1
18-1
18-3
19-1
19-1
20-1
20-2
*
54 3
“ і
"т А
š | о
А !
у ( К
aji Г a
E
— е” ГЕЛ мн
ER!
XL Ó
ий ж Ч (T
ka QA
"
інінде
ieee
зе CN AAR cera ЕНЕ
H
1-1.
MODEL FM-9
SECTION I
INTRODUCTION
1-1. GENERAL.
1-2. This instruction book supplements the informa-
tion included inthe Model FM-9 Operation Book. Refer
to the Operation Book for a complete description,
operation instructions, and general theory of opera-
tion.
1-3. Generalmaintenance datais included in sections
П, III, and IV. Sections II and III provide checkout
and calibration procedures. Section IV includes in-
formation to identify and locate circuit boards and
components mounted directly on the chassis.
1-4. Sections V through XX provide maintenance data
for the individual circuit boards. Each section includes
aschematic, component location view, parts list, and
a detail theory of operation.
TABLE I. GENERAL SPECIFICATIONS
FREQUENCY
RANGE
Fundamental 150 - 162 MHZ
Harmonic (3rd) 450 - 486 MHZ
(2nd through 6th also usable)
+ 0.0001% (+ 1 ppm)
(After 30 minutes warmup)
ACCURACY
DEVIATION MEASUREMENTS
0 to 5 KHZ
0 to 15 KHZ
SENSITIVITY, FREQUENCY, AND
DEVIATION MEASUREMENTS
RF OUTPUT
RANGE
Fundamental 50 mv to 0.5 uv
ACCURACY (Calibrated into 50 ohms load)
Built-in audio amplifier
and speaker
EXTERNAL FREQUENCY MODULATION
FUNDAMENTAL
300 to 3,000 HZ 5 KHZ deviation
2 KHZ minimum
HARMONIC (3rd)
300 to 3,000 HZ 15 KHZ deviation
6 KHZ minimum
Required Audio Input 1 vrms (approximate)
AUXILIARY OUTPUTS
IF ALIGNMENT SIGNAL
Frequency
400 - 500 KHZ, with
high harmonic content
3 v peak to peak
k
Amplitude
Source Impedance
CRYSTAL CALIBRATION
POWER REQUIREMENTS
115/230V, 50 to 400 HZ,
7 уа
11.5 to 15 v, approximate
0.3 amp average current,
NEGATIVE ground
OPERATING TEMPERATURE
32? to 120°F (0° to 50°C)
FURNISHED ACCESSORY
EQUIPMENT Built-in battery charger
and voltmeter.
Six foot coax cable, 50 ohms.
BNC to UHF connectors.
DC power cable, cigarette
lighter connector.
RFA-20 attenuator.
1-1
TABLE 2.
TRANSMITTER FREQUENCY CHECK
10.
ІШ
Do not key transmitter when directly coupled
tothe FM-9. Excessive input signal will dam-
age the instrument.
With the unit plugged into a suitable power source,
allow a 30 minute warm-up to stabilize the crystal
oven.
Extend internal telescoping antenna.
Turn RF OUTPUT switch to ANT. position.
Turn FUNCTION switch to CAL position.
Set MHZ, 100 KHZ and 0-100 KHZ dials to chan-
nel frequency.
NOTE: Fundamentalchannels are direct reading.
Harmonic channel frequencies must be
divided by 3.
Set 0-100 KHZ dial to nearest 5 KHZ CAL point
(yellow calibration marks).
NOTE: Fundamental channels are on calibration
marks.
Adjust CAL knob for zero beat, using speaker
and beat meter.
Turn FUNCTION switch to MEAS. GEN. position.
Reset 0- 100 KHZ dial to harmonic channel divided
by 3. Ignore this step for fundamental band.
Key the transmitter. The tone heard inthe speaker
is the difference between the transmitter frequency
and the channel frequency. The antenna length
may be adjusted for optimum coupling.
The transmitter may now be set by adjusting its
frequency for a zero beat against the FM-9 setting,
or its frequency determined by adjusting the FM-9
0-100 KHZ control for zero beat. The FM-9 dial
has three 200 cycle markers on each side of the
channel for this purpose.
TRANSMITTER DEVIATION CHECK
1.
1-2
After the transmitter frequency has been set,
change Ше FM-9 dial readings (either up or down)
by 300 KHZ.
NOTE: Achange of only 100 KHZ is required for
fundamental channels since the 3rd har-
monic is being used.
Turn FUNCTION switch to LIM. CUR. position.
4.
BRIEF OPERATING INSTRUC TIONS
Key transmitter for limiter current reading.
Meter reading must be above red line. If not, in-
crease coupling and recheck frequency.
Turn function switch to FREQ. SET position.
Meter needle should be on red line. If not, adjust
FM-9 0-100 KHZ dial for red line reading.
Turn FUNCTION switchto5 KHZ or 15 KHZ posi-
tion. Noise will cause a residual deviation read-
ing when the transmitter is not keyed.
Key the transmitter and modulate by speaking into
the microphone. The peak deviation is read direct-
ly on the motor.
NOTE: Thedeviation on either side of the channel
frequency may be read by using the
DEVIATION + - switch. The demodulated
audio is present in the speaker or phone
output.
RECEIVER CHECKOUT
16
10.
Connect FM-9 INPUT/OUTPUT jack to receiver
antenna connector.
Do not key transmitter while directly connected
to the FM-9.
Turn FM-9 FUNCTION switch to CAL position.
Set MHZ,100 KHZ, and 0-100 KHZ dials to channel
frequency.
NOTE: Fundamental channels are direct reading.
Harmonic channel frequencies must be
divided by 3.
Set 0-100 KHZ dialto nearest 5 KHZ CAL point
(yellow calibration marks).
Adjust CAL knob for zero beat, using speaker
and beat meter.
Turn FUNCTION switchto MEAS. GEN. position.
Reset 0-100 КН? dialto harmonic channel divided
by 3. Ignore this step for fundamental band.
Adjust RF OUTPUT controls to desired output
level.
Discriminator center of receiver may now be set
andsensitivity checked. The FM-9 output may be
adjusted to as low as 0.5 uv.
The output of the FM-9 may be frequency modu-
lated by applying a 0 to 1 vrms tone to the EXT.
MOD connector.
SECTION II
FIELD MAINTENANCE
2-1. GENERAL.
2-2. With limited field facilities, maintenance should
be limited to (1) 1 MHZ calibration, (2) calibration of
the 0-100 KHZ dial, and (3) adjustment of the battery
charge circuit. Refer to Section III for additional
maintenance and checkout procedures.
2-3. To remove the covers from the unit, proceed as
follows:
a. Unscrew the two knobs which secure the carrying
handle. Remove the handle.
b. Remove the two circular plates located under the
handle knobs. Each plate is attached with two
Screws.
c. Remove the six screws which attach the covers
to the back panels.
d. Separate the top and bottom covers from the unit.
e. Refer to Section IV for location of the various
component boards.
2-4. 1 MHZ CALIBRATION.
2-5. To ensure accuracy, check calibration of the
1 MHZ crystal every 30 days. To checkand adjust the
crystal, either aprimary standard ora standard frequency
receiver is required. For the high frequency broad-
casts, a receiver such as Gertsch Model RHF-1 is
required. For the very low frequency broadcasts, a
phase comparison receiver such as Gertsch Model
PCR-1 is required. To check and adjust the receiver,
proceed as follows:
a. Connect Model FM-9 to a power source and allow
at least 30 minute crystal warmup. Make certain
the OVEN light is cycling on and off.
b. Connect 1 MHZ OUTPUT jack J1606 to the com-
parison (Fx) input of the standard or receiver.
c. Turn ЕМ-9 power switch ON. The remaining
controls of the FM-9 do not affect the 1 MHZ out-
put signal.
d. Proceed with the frequency check.
e. Make certain that the crystal is accurate to one
part in 10-7 or better. Adjust MHZ ADJ capaci-
tor C1648 as required to obtain accuracy within
limits.
|
2-6. LFO DIAL CALIBRATION. |
2-7. During normal operation, the 0-100 KHZ dial is
calibrated from the front panel with the 0-100 KHZ
CALIBRATE control. If zero beats cannot be obtained
at the lowor high ends, the dial should be recalibrated.
А frequency counter or some means of measuring fre-
quencies in the 400 to 500 KHZ range is required.
Reset the low and high ends as follows:
a. Remove covers. See paragraph 2-3.
b. Turn power on and allow a 30 minute warmup.
c. Connect frequency measuring device to the LFO
OUTPUT jack J1605. .
d. Set the CALIBRATE control to the approximate
mid point.
e. Set the 0-100 KHZ dial to 000 (ccw).
f. Adjust coil L101 (see section 5) to set the LFO to
400 KHZ.
g. Set 0-100 KHZ dial to 000 (cw).
h. Adjust capacitor C1645 to set LFO to 500 KHZ.
The dual screwdriver controls for the capacitor
are accessible from the side of the unit.
1, Turn FUNCTION switch to CAL.
j. Check that zero beat may be obtained with the
CALIBRATE control.
k. Repeat step j with LFO dials set to 500 and 050.
2-8. BATTERY CHARGE CIRCUIT ADJUSTMENTS.
2-9. To adjust the battery charge voltage and meter
calibration, proceed as follows:
a. Connect power cord to a vac outlet.
b. Slide 115/230 volt switch to position matching the
voltage of the power source.
c. Slide dc/ac switch to ac.
d. Turn POWER switch ON.
e. Turn BATTERY CHARGE switch to CHARGE.
f. Connect dc voltmeter to DC INPUT jack J1608.
g. Adjust potentiometer R913 (see section 13) to set
battery charge voltage to the maximum charge level.
h. Adjust potentiometer R914 to set FM-9 meter to the
same reading as the external voltmeter.
2-1/2-2
ту ВОД ГУА ИЕ Жо "u М | m ГРО n » P
i y Ц қ ци + % Р,
: қ I Dc ї А Т
274
t у | 1 - rs У
1 T M
! w у
Ч
> ві
А BIN
1
*
Í
3
7
7
| ;
Ч
Р РЫ
ке:
po
Е
17
i
.
t
i
b. І 7
Pav 1
1
i M є I кі
| > 1
) ї + " Y |
D u их ۴
SECTION III
SHOP MAINTENANCE
3-1. GENERAL.
3-2. This section includes maintenance procedures
recommended for calibration laboratories or similarly
equipped facilities. The maintenance procedures con-
Sist of checkout and adjustment procedures and trouble-
shooting notes. Refer to paragraph 2-3 for cover re-
moval.
3-3. ADJUSTMENTS.
3-4. FIELD CALIBRATION. Perform adjustment
procedures outlined in Section II before proceeding
with the adjustment listed below.
3-5. POWER SUPPLY. To check the 9 volt output of
the supply, a dc voltmeter is required. Proceed as
follows:
a. Connect unit to an ac power source and turn
power switch on.
b. Turn BATTERY CHARGE switch to OPERATE.
c. Measure output voltage of supply (across capa-
citor C907).
d. Adjust potentiometer R909 (see section 13) to set
voltage to 9 vdc.
e. Ifadjustment was required, repeat procedure of
paragraph 2-9.
3-6. DIVIDERS. To check the dividers, a frequency
counter is required. Proceed as follows:
a. Turn FUNCTION switch to CAL.
b. Connect counter to TP11 (see figure 3-1).
c. Center coil 1701 in the range over whichthe
divider output is 100 KHZ.
d. Connect counter to TP10.
e. Center coil 1702 in the range over which the
divider is 5 KHZ.
3-7. 17 TO 28 MHZ OSCILLATOR. Totune Ше oscil-
lator, a means for measuring signals in the 17 to 28
MHZrangeisrequired. Exactfrequency measurement
isnotrequired. The measuring device need only dis-
tinguish between 1 MHZ steps. To tune the oscillator,
proceed as follows:
a. Connect dc voltmeter to TP12.
b. Connect frequency measuring device to ТРЗ.
Make certain input impedance of device is 100 k
or more.
с. Set the MHZ dial to 152 mc.
d. Check that oscillator frequency is 17 MHZ. If
required retune oscillator with trimmer capa-
citor C1601.
e. Check that a steady dc voltage (indicating lock)
is measured at TP12 with the frequency measur-
ing device connected and disconnected.
f. Repeat procedure for the following dial settings:
KHZ OSCILLATOR TRIMMER
DIAL FREQUENCY CAPACITOR
150 17 MHZ C1601
151 18 MHZ C1602
152 19 MHZ C 1603
153 20 MHZ C1604
154 21 MHZ C1605
155 22 MHZ C1606
156 23 MHZ С1607
157 24 МН7 С1608
158 25 МН7 С1609
159 26 MHZ C16 10
160 27 MHZ C1611
161 28 MHZ C1612
3-8. 2.6 TO 3.5 MHZ OSCILLATOR. To tune the
oscillator, a means for measuring signals in the 2.6
to 3.5 MHZ range is required. Exact frequency
measurement is not required. The measuring device
need only distinguishbetween 100 KHZ steps. To tune
the oscillator proceed as follows:
a. Connect dc voltmeter to TP6.
b. Connect frequency measuring device to TP5.
c. Set the 100 KHZ dial to 9.
d. Check that oscillator frequency is 3.5 MHZ. If
required, retune oscillator with trimmer capa-
citor C1644.
e. Check that a steady ас voltage (indicating lock) is
measured at TP6 with the frequency measuring
device connected and disconnected.
f. Repeat ргоседигеїог the following dial settings:
100 KHZ OSCILLATOR TRIMMER
DIAL FREQUENCY CAPACITOR
9 3.5 C1644
8 3.4 C 1643
7 3.3 C1642
6 3.2 C1641
5 9.1 С1640
4 3.0 С1639
3 289 С1638
2 2.8 С1637
1 2.7 С 1636
0 2.6 C1635
3-9. 20 TO 32 MHZ AMPLIFIER. Totunethe ampli-
fier, ameans for measuring relative signal amplitudes
in the 20 to 32 MHZ range is required. To tune thc
amplifier proceed as follows:
a. Set 0-100 KHZ dials to 000 and 100 KHZ dial to
54
b. Connect amplitude measuring device to TP2.
c. Set MHZ dial to 152 (152.5000 MHZ).
d. Tune for maximum amplitude and trimmer capa-
citor C1613.
e. Repeat procedure for the following dial settings:
DIAL TRIMMER
SETTINGS CAPACITOR
150.5000 C1613
151.5000 C1614
152.5000 C1615
153.5000 C1616
154.5000 (TOT
155.5000 C1618
156.5000 C1619
157.5000 C1620
158.5000 C1621
159.5000 C1622
160.5000 C1623
161.5000 C1624
3-10. 3 TO4 MHZ AMPLIFIER. To tune the ampli-
fier, a means for measuring relative signal ampli-
tudes in the 3 to 4 MHZ range is required. To tune
the amplifier proceed as follows:
a. Setthe LFO dials to 500.
b. Connect amplitude measuring device to TP4.
с. Set 100 KHZ dial to 9.
d. Tune for maximum amplitude with trimmer capa-
citor C1634.
e. Repeat procedure for the following dial settings:
100 KHZ TRIMMER
DIAL CAPACITOR
C1634
C1633
C1632
C1631
C1630
C1629
C1628
С1627
C1626
C1625
© rn Pm Co 4 сл O чо O
3-11. DEVIATION METER ZERO SET. To set the
circuit to a center frequency of 300 KHZ, proceed as
follows:
3-2
a. Connect 300 KHZ signalto INPUT/OUTPUT Jack
J1601.
b. Turn FUNCTION switch to FREQ SET.
c. Adjust potentiometer R210 to obtain a zero indi-
cation on the meter.
3-12. 5 KHZ AND 15 KHZ DEVIATION METER CALI-
BRATION. То calibrate the meter, a signal with а
precisely known FM deviation is required. To cali-
brate the meter proceed as follows:
а. бей the FM-9 to the incoming signal as outlined
in the transmitter deviation check portion of
table 2.
b. Turn FUNCTION switch to 5 KHZ.
с. Apply adeviation of 5 KHZ tothe incoming signal.
d. Adjust potentiometer R226 to obtain a 5 KHZ in-
dication on the meter.
e. Turn DEVIATION switch to alternate position
and check meter indication. If required, adjust
potentiometer R236 for a compromise setting.
т. Turn FUNCTION switch to 19 KHZ:
g. Apply a deviation of 15 KHZ to the incoming
signal.
h. Adjust potentiometer R224 to obtain a 15 KHZ
indication on the meter.
i. Turn DEVIATION switch to alternate position
апа check meter indication. If required, adjust
potentiometer R236 for a compromise setting.
3-13. TROUBLESHOOTING.
3-14. The following procedure is intended to assist
in localizing troubles to a stage or series of stages.
The procedure may also be used as a final checkout
procedure for the unit.
3-15. POWER SUPPLY.
a. Check that OVEN light cycles on and off after a
suitable warmup. To check all power input
circuits, check with 115 vac, 230 vac, and 12
vdc inputs.
1. Failure of the light to cycle indicates
troubles in the crystal oven circuit or the
power input circuit.
b. Check 13.5 vdc per paragraph 2-9 and 9 vdc per
paragraph 3-5.
1. Failure to obtain required output voltages
indicates troubles in the regulator circuit.
3-16. 1MHZ CIRCUITS.
a. Check 1 MHZ output per paragraph 2-5.
3-20.
1. Erratic or inaccurate output indicates
troubles in the crystal oscillator A1611,
crystal CR1601, or with the crystal oven
circuit.
2. Мо output indicates troubles in the crystal
oscilator A1611 or the spike generator
А1608.
Check divider output per paragraph 3-6.
1. Erratic 100 KHZ output indicates troubles in
the buffer Q701 or the 10:1 divider.
2. Erratic 5 KHZ output indicates troubles in
the 20:1 divider.
LFO (INTERPOLATING OSCILLATOR).
Check LFO end points per paragraph 2-7, steps
a through g.
1. Erratic output indicates troubles іп the LFO
A1615.
2. Мо output indicates troubles in the LFO or
buffer Q303.
Check LFO calibrate beat notes per paragraph
2-7, steps i through k.
1, No beat notes indicates troubles with the
audio circuits A1606.
2. Lack of beat note control indicates troubles
in the L FO.
17 TO 28 MHZ OSCILLATOR.
Check tuning of oscillator per paragraph 3-7.
1. Хо output at TP3 indicates troubles in os-
cillator Q1403.
2. А varying dc output at TP12 indicates loss
of lock. Тһе trouble is probably in shaper
Q1401 and Q1402 or the phase detector.
3. An erratic dc output at TP12 indicates
troubles in sweep generator Q301 and Q302
or in the phase detector.
2.6 TO 3.5 MHZ OSCILLATOR.
Check tuning of oscillator per paragraph 3-8.
1. Nooutput at ТРА indicates troubles is oscil-
lator Q1504.
2. Avaryingdc output at TP6 indicates loss of
lock. The trouble is probably in blocking
oscillator Q1502 or the phase detector.
IF CHECK.
With a frequency measuring device, check that
output at TP1 is between 20 and 32 MHZ.
3-21.
3-22.
1. Anoutput varying in frequency within the 20
to 32 MHZ range indicates loss of lock. Pro-
ceed with the checkout procedure.
2. No output in the range indicates troubles in
the multiplier circuits, HFOQ1004 or mixer
Q1003.
Tune 20 to 32 MHZ amplifier per paragraph 3-9.
1. Мо output indicates troubles in amplifier
Q1404.
Tune 3 to 4 MHZ amplifier per paragraph 3-10.
1. Nooutput indicates troubles in mixer Q1501
or amplifier Q1503.
With a frequency measuring device, check that
output at ТРТ is between 400 and 500 KHZ.
1. Nooutput indicates troubles in mixer-ampli-
fier A1613.
Check dc voltage at TP8.
1. A varying dc voltage indicates troubles in
phase detector A1614 or the HFO Q1004.
OUTPUT CHECK.
Check frequency of a transmitter with a known
frequency.
1. No beat notes indicates troubles in buffer
Q1002, the harmonic generator, or beat
detector Q1001.
2. Erratic beat notes indicates troubles in the
HFO.
Measure output at J1601 as the RF OUTPUT and
% RF OUTPUT controls are varied.
1, No output indicates troubles in the attenua-
tor.
2. Lack of control indicates troubles in the at-
tenuator or buffer Q1002.
DEVIATION METER CHECKS.
Operate equipment per steps 1, 2, and 3 of the
transmitter deviation check section of page 1-2.
1. На limiter current reading above the red
line cannot be obtained, the trouble is proba-
bly in the IF amplifiers Q501 and Q502 or
limiter Q503 and Q504.
Check zero set per paragraph 3-11.
1. Inability to obtain a zero set indicates
troubles inthe limiter or the discriminator.
Check meter calibration per paragraph 3-12.
1. Inability to calibrate the meter indicates
troubles in the detector drive circuits or in
the meter.
3-3
3-23. DEVIATION METER CALIBRATION CHECK
(ALTERNATE METHOD). То check the full scale
readings of the meter, proceed ав follows (carrier null
method):
3-4
Operate transmitter at a convenient carrier fre-
quency.
Connectaudio oscillator to the external modula-
tion input of the FM generator. Operate audio
oscillator at 577.8 cps and zero amplitude.
Operate the Model FM-9 as a frequency meter
and zerobeat against the carrier frequency (see
Operation Manual).
Adjust Model FM-9 to obtain a low but clearly
audible beat frequency note. А beat note of ap-
proximately 200 to 300 cps should provide ade-
quate results. Use headsetto monitor beat note.
Increase amplitude of audio oscillator until the
beat note againstcarrier disappears. Amplitude
should be increased slowly and the beat note
should be monitored carefully to make certain
that the correct beat note disappearance is se-
lected.
Continue increasing amplitude until the third dis-
appearance of the beat note against carrier oc-
curs. Carefully adjust amplitude to center the
control in the range of the beat note disappear-
ance. Atthis point, the FM generator is operat-
ing with a deviation of 5 KHZ.
Reset the Model FM-9 to a frequency 300 KHZ
below the carrier frequency of the transmitter.
Turn FUNCTION switchto the FREQ. SET posi-
tion.
Operate the FM generator with no modulation
applied. This may be accomplished by discon-
necting the audio oscillator. Do not change fre-
quency or amplitude settings of audio oscillator.
Adjust Model FM-9 as required to set the devia-
tion meter to the FREQ. SET red line.
Turn FUNCTION switch to the 5 KHZ position.
Turn DEVIATION switch to the + position.
Apply modulation to the FM generator.
The peak deviation meter should indicate 5 KHZ
+ 5%.
Reset the Model FM-9 to a frequency 300 KHZ
above the carrier frequency of the transmitter.
Repeat steps h, i, j, andk.
ша peak deviation meter should indicate 5 KHZ
+ 5%.
1. If the readings of steps n and p differ, this
indicates trouble in the input signal (distor-
tion, unequal sidebands, etc.).
2. Ithe readings are equal but out of specifi-
cation, the most probable source of trouble
is the discriminator and meter drive.
Turn DEVIATION switch to the - position.
n peak deviation meter should indicate 5 KHZ
+ 57.
Check that audio signal of approximately 577.8
cps is present.
Repeat procedure for the 15 KHZ range using a
modulation frequency of 1.7333 KHZ.
ТР?
TPS
TP3
CN
а.
t—
ТРА
TP]
Test Points (Sheet 1 of 2)
Figure 3-1.
3-5
й
TP9
зә
ТР10
Test Points (Sheet 2 of 2)
Figure 3-1.
3-6
Board Assy
Board Assy
А1607 Board Assy
A1612 Board Assy
А1613
А1616 4-4 Board Assy
Section VII)
АТ 1601 Antenna, te
Capacitor,
Capacitor,
Capacitor,
Capacitor,
Capacitor,
A1614 4-4 Board Assy
Section VIII)
SECTION IV
MAIN CHASSIS COMPONENTS
(See figures 4-2 through 4-7)
, 1 MHZ multiplier (See Section XVI)
, Audio (See Section XV)
, Frequency dividers (See Section XI)
, Phase detector and sweep gate (See
, 3 cycle sweep and LFO buffer (See
lescoping
trimmer, 3 to 35 pf
trimmer
trimmer
trimmer
trimmer
AA-1130
, 1 MHZ selector (See Section XVIII)
Board Assy, 400 to 500 KHZ IF (See Section XVII) AA-1138
А1615 Board Assy, Low frequency oscillator (See Section V) AA-1140
403
Elmenco
C1647 Capacitor, trimmer, 1.8 to 8.7 pf 160-104
|сияв (4-3 | Capacitor, variable, 0.6 to 14 pf VC-IIGE
Capacitor, mica, 150 pf DM15E151J
Capacitor, mica, 120 pf DM15E121J
Capacitor, Pee 82 pf DM15E820J
Capacitor, mica, 82 pf DM15E820J
Capacitor, mica, 68 pf DM15E680J
Capacitor, mica, 47 pf DM15E470J
Capacitor, mica, 43 pf DM15E430J
Capacitor, mica; 20 5f DM15E270J
Capacitor, mica, 15 pf DM15E150J
REF FIG.
DESIG NO, ITEM РАВ ТО МЕК
С1645 Capacitor, dual trimmer, 5 to 25 pf 3153-000-NPO Erie
C1646 Capacitor, variable, 17 to 360 pf CA-8
4-3 D
Capacitor, mica, 10 pf DM15E100J
Capacitor, mica, 33 pf DM15E330J
Capacitor, mica, 27 pf DM15E270J
4
-了
Т
Capacitor, mica, 27 pf DM15E270J
Capacitor, mica, 15 pf DM15E150J Elmenco
ee a Part of FL1601
Capacitor, electrolytic, 100 uf, 15 V P65AN2610015
Crystal Assembly, 1 MHZ, 12 vdc oven TCO-11RD-4 Bliley
4 Capacitor, ‘electrolytic, 25 uf, 15 V
3
CR1601 4
-5
-3
4-4
42
Qo
о
гә
Diode, Zener 9 V 1N1511A БО e.
Bussmann
Fuse 0.25 апр
мог -1
.Fuse, | amp
F1602 4
FL1601
J1601
Filter
Connector, BNC
RIGID
ANTENNA RF OUTPUT ox
AT 1601 T mw
ЕЕ =
ATTENUATOR = жу (sw)
INPUT T А 1601
gueu 41600
RF
PERCENT
OUTPUT
E
RIGO! R1620
ж TK
DISCRIMINATOR OUTPUT
DEVIATION
= A 602 -
wwe] — 217577 =
50 KC
270 КС | - Sn - 03,0504
IF AMPLIFIERS AND LIMITER
|HSCRIMINATOR AMPLIFIER
0201,0202 0 204
R
экс
| DISCRIMINATOR ANO FEEDBACK
METER DRIVE
: == ps
+ зув
= = E FUNCTION
Гис MATFLER p
HARMONIC |
GENERATOR
нғо
BUFFERS
A1604 ]— 9 =
HIGH FREQ. OSCILLATOR
BUFFER
AMPLIFIER FT MULTIPLIER,
TIMES 5 BUFFER TIMES 13
AMPLIFIER MULTIPLIER
65 MC 13 MC 13 MC
-----[sieozr
FUNCTION
PRE AMPLIFIER]
anor, 91102
TWIN TEE
NOTCH FILTER
AUDIO DRIVER.
anos aiios
во?
NOTES:
1. S£ PROGRESSIVELY SHORTING CONTACTS.
2. UNLESS OTHERWISE SPECIFIED RESISTOR
VALUES ARE IN OHMS 510% 1/4 WATT.
3. UNLESS OTHERWISE SPECIFIED CAPACITOR
VALUES LESS THAN ONE ARE IN MICRO-
FARADS, THOSE MORE THAN ONE ARE IN
PICOFARADS,
AUDIO
TIMES 2
н! MIXER
"osan | >] 17 Me
150 MC. | 65 MC
a == >>
20-3? MC
AMPLIFIER
01404
CAP VALUE 1.5-20 12 PLACES
(0683-6241
о
"VALUE У
ог CK?
E
ci
1 MC
TP 2 o—3
SELECTOR
вв
сєз cj сез св
= l
з 421 12 7 61 св? сше Joe Довго сива T свгг Довгз Лслвга BUFFER i
C1659 {1660$ cissi $ с1662 | ere
Ч : ДӘ E MO SELECTOR
PLACES (0609-0882 (| 51603
б60 "Сі сыг
түлен BLOCKING
18 гу! Григ ит 下 EM +} osciLLATOR
i T 9604
iso Лео Де е Де 141447 1 ol !
16290 cieso | сы | ciesz {0653 | ciesa | 21655 { 21656 |, cies? | ciesa
o г ерту За в ю % 1
Е ےہ == 5 sa =]
SHAPER
| | 9602, овоз
EXTERNAL
! AMPLIFIER | 1 MODULATION
0 601
17-28MC
OSCILLATOR
01405
SHAPER
MC ADJUST
T
свав
ТР зо
3-4 MC
AMPLIFIER.
01503
100 кс
SELECTOR | їр
иона
-
DETECTOR омо ,al4oz Polar жеп iii
01
трі?
(1628 | CI626 СІ627 | Ci628 „C1629 „СЗО сёз! „C1632 CIES (634
CRYSTAL
OSCILLATOR
втори
"LITE
BATTERY
CHARGE
5 1606
OPERATE
1
| BATTERY CHARGE
П
и
ов 09 100 кс не
SELECTOR. CRYSTAL [OSCILLATOR
51604 AC/DC
+ 16070)
ПРЕД = 2:
Н
6 7 LI 9 |
тэ Эн BUFFER я виз
1 1 ay
ТРИ |
i ali E
I 10 TO! сі
Ї а DIVIDER
A 100 KC
SUPPLY
RECT.FIER
[Sora] 1607 А.
АС/0С
20 TO |
em OiviDER.
26 тоззмс BLOCKING. o-f-I—]- акс
РН Е
ТР 5 эсэр —] OSCILLATOR ETIAIN OSCILLATOR T
01504 01502 о
TP 6 o = = =
[
400-500 кс Pj 25MFD
NN = Даслер NOH UA И Fewer"
НЕ? Em Бес) E тет
і ү 400 - 500 Т с zar 470 маализу
DENTES СІР sca 1/84/230۷
AMPLIFIER LFO CALIBRATE — "Б
91302
fass | SWEEP AND
LFO BUFFER лено
| пор LFO OUTPUT
BUFFER IF OETECTOR | | 15098, Е
01303 Q 1304 C1646 2
17: TO жо - |
ТР тоо Ces
--- Глава | - 2x( 5TO 25) 3 CYCLE
SWEEP GENERATOR
9301, 0302 i THERMOSTAT
! '
CRYSTAL
LOW FREQUENCY С LFO BUFFER CRYSTAL OVEN
Y OSCILLATOR:
101,0 102 2908
LOW FREG OSCILLATOR
Figure 4-1, In
terconnection Diagram
4-3
REF FIG.
DESIG NO. ITEM PART NO. MFR
=
11602 4-2 Jack, phone 12A Switchcraft
—
J1603 4-3 Jack, red 108-902 E.F. Johnson
J1604 4-3 Jack, black 108-903 E.F. Johnson
Jack, black 108-903 E.F. Johnson
Jack, red 108-902 E.F. Johnson
Connector, BNC UG-911/U
Connector, phono S-PM-1 Singer
mS |
Connector, receptacle 403BT5 Alden
ا
Choke, 3.9 uh (Part of FL1601) 70F396A1 Miller
Choke, 3.9 uh (Part of FL1601) 70F396A1
Choke, 1.8 uh (Part of FL1601) Z-144
Speaker, 100 ohm coil 22A06Z100
Transistor 2N669
Transistor 2N1485
Potentiometer, 5K JU5021 Allen-Bradley
Resistor, composition, 4.7K 4100, 1/4 watt
ік
JU1021 Allen-Bradley
Potentiometer,
Resistor, composition, 270 ohms 4109, 1/4 watt
Resistor, wirewound, 20 ohms 4107, 5 watt
Resistor, composition, 2.2K +10%, 1/4 watt
R1617 Resistor, composition, 470 ohms +10%, 1/4 watt
R1618 Resistor, composition, 330 ohms %10%, 1/4 watt
R1619 Resistor, composition, 1.8K +10%, 1/4 watt
R1620 Resistor, composition, 4.7K %10%, 1/4 watt
R1621 Resistor, composition, 820 ohms %10%, 1/4 watt
R1622 Resistor, composition, 4.7K +10%, 1/4 watt
Resistor, composition, 2. 2K +10%, 1/4 watt
SW-251
2 Switch
4-2 Switch 52987 CTS
SW-253 Singer
51603 4-2
+
1
+
ЕЕ аа эж = |
хо. ITEM PART NO. MFR
Switch, slide, 4PDT 9604
4633
| singer |
Littelfuse
4-2 Switch, slide, DPDT
Switch, slide, 4PDT
Switch, slide,
Switch,
Switch, slide,
$1611 4-2 Switch, slide, DPDT 4603-A2
T1601 4-4 | Transformer
Power Cord 17238
XF1601 Fuseholder 342004
XF1602 Fuseholder 342004
162-8430-931 Dialco
XDS1601 Lampholder
Dial Indicator Assembly
151601
X RF ОТР
RF OUTPUT
5 MY
зо My *
.
ANT.
INPUT/ OUTPUT
51603
АТ1601 К1603 051601 M1601
= erise} 一
MODEL ғм.5
FREQUENCY/DEVIAHION. METER
0002 x
pu MEGACTCLES ———
6| 50
хз [350486]
: 100 KC
FUNCTION
UM FREQ
500 UV : 1 1 ПА MEAS CUR. SET
му» 2 и a ян, 2
SUN
BATTERY
CHARGE
шиш
51606 11602 1605 51605 С1646
51604
Figure 4-2. Front Panel
6091f
L09LA
215 wus
256-WJ ШЕТ
озы m WON e в e
0383 : А :
Р 0 ТІЛІ 2 N
ov 104100 4981
0 3001 2
| “у091Г
8912 9091Г 8091Г 00914 10915 80915 10914 01915 SOT LE
Back Panel
Figure 4-3,
4-6
А1611 FL1601 A1608 СК1603 R1615 C1666 11601 А1609
К1618
К1616
R1617
CR1602
C1667
Q1601 ДЕСЕ
( бес
А1602 А1614
Figure 4-4, Top Chassis View
A1601
R1602
R1619
R1620
CR1601
A1605
Figure 4-5, Bottom Chassis View
A1613
C1646
A1606
С1621
C1620
С1614
С1660
С1619
С1617
С1618
С1622
С1616
С1662
С1623
С1615
C1659
C1624
R1621
C1630
Figure 4-6. Tuning Capacitors
C1629
C1632
C1627
C1633
C1625
C1634
C1626
С1631
С1628
4-9
Glen
C1612
C1644
Figure 4-7.
е.
(Ге
e ө
le e
то е
өсе
ee
€
Tuning Capacitors
C1643
C1636
C1638
С 1641
C1639
C1640
Op 9v
8104
100
|
400-500 KHZ
OUTPUT TO
| BUFFER AMPL-
!
CIOS
01
С1645 21646 С1647
390
CIO8 Q
IOO
С107
| 022 2 /
A /
7
er A /
/ yA
5 Lm CP AE MENU e EEE E L МАІМ 2-- CALIBRATION
Ж TUNING CONTROL
TO LOCKED бе TO MAIN 17-360 5-5
NORMAL SWITCH LOCK PHASE
= DETECTOR
NOTES:
|. UNLESS OTHERWISE SPECIFIED RESISTOR VALUES ARE IN OHMS + 10% 1/4 WAT T.
2, UNLESS OTHERWISE SPECIFIED CAPACITOR VALUES LESS THAN ONE ARE IN MICROFARADS,
THOSE MORE THAN ONE ARE IN PICOFARADS.
Figure 5-1. Schematic (Low Frequency Oscillator)
К103: RIOT.CIOAM К109 СО]
1101—55 R102
шиг Q101
T R105
R108 C107
C105 R104
esum C106
C102 C108 К107 0102
Figure 5-2. Component Location (Low Frequency Oscillator)
SECTION V
5-1
PARI NO:
Capacitor, mylar, 25 uf, 15 vdc Р65АС122515 МЕС
Capacitor, mica, 390 pf DM15E391J
Capacitor, mylar, 0.022 uf, 200 vdc 1921222392
Сарасіїог, 100 рї TCN-100 Centralab
R101 Resistor, composition, 33K 4100, 1/4 watt a
КЕЕ
DESIG ITEM МЕК
Resistor, composition, 10K 4100, 1/4 watt
Resistor, composition, 2.2К 4107), 1/4 watt
Resistor, composition, 100 ohms 41070, 1/4 watt
Resistor, composition, ІК 410%, 1/4 watt
Resistor, E И 470 ohms %10%, 1/4 watt
R107 Resistor, composition, 15K 4100, 1/4 watt
R108 Resistor, composition, 4.7K 21095, 1/4 watt
R109 Resistor, composition, 150 ohms 41076, 1/4 watt НИ?”
5-1. The low frequency oscillator is a multivibrator c. High and low dial tracking controls capacitor
type of oscillator with a tuned LC network in the base C1645 and coil L101.
of the second stage Q102. Four controls tune the LC
network: 9-2. TYPICAL VOLTAGES.
a. The 400 to 500 KHZ output to the buffer amplifier
a. 0-100 KHZ capacitor C1646 which functions as (measured at C104) should be approximately 1.5
the main tubing control. volts peak-to-peak.
b. The signal to Ше main lock phase detector (meas-
b. CALIBRATION control capacitor C1647 which ured at the junction of C106 and C107) should be
sets the circuit to the 5 KHZ calibration points. approximately 0.1 volt peak-to-peak.
5-2
C206 CR202 CR204 C209 R211 R210
+9v (Sw)
= = = m SCOPE
a OUTPUT
MANC
| R20!
220 DISCRIMINATOR TO POINT "A"
8216 LIMITER
| А |
TO DET. ON
AUDIO AMPL.
? BOARD
они 217 516020
PEAK DETECTOR ‘sox = ТО ВАТТЕВҮ
Аг y 2 cHG.sw. |
2-0! 506
п202 F-400 KC
% *
(козел
(201 R203 16201 C202 1.с203.
Ih юк Т 270 T Us
!
$
C217
100 мғо/15у | СА207
Е Di
ol
C204 СА201 R205 @ R206 CR203 C205
56 201 22K 22K 56
£ هل R230 | R236 BATTERY
ул cn208 123 Б CHG.SW
| сгов SK | czo7
З 8) T 330 T 330 + с219
CR202 «7 CR204 =
ЯК МЕО |—MFD
= | оу FUNCTION
Жеке, SWITCH
He) 81602
Ф FREQ. SET
METER ADJ. i R212
|
DEVIATION
pem
AUDIO OUTPUT
|
!о,
NOTES ЗУ E poo Ы | 72 77 7705777 Res. рэг. | соо aa a
1. ALL TRANSISTORS ARE ТҮРЕ 2N3904-5 + AAA. NT
2. ALL DIODES ARE TYPE IN273. |
3. Ж INDICATES MATCHED SET.
4. UNLESS OTHERWISE SPECIFIED RESISTOR VALUES ARE IN OHMS IO% 1/4 WATT.
5. UNLESS OTHERWISE SPECIFIED CAPACITOR VALUES LESS THAN ONE ARE IN MICRO-
в. FUNCTION SWITCH: FARADS, THOSE MORE THAN ONE ARE IN РІСО-
FUNCTION РАНАОЗ,
СЕО САС
=
Жаха
[s | метея гео]
SECUN
Ге |
Гад
5 KC FS
R236
Figure 6-1. Schematic (Discriminator) Figure 6-2. Component Location (Discriminator)
SECTION VI
6-1
REF
DESIG ITEM PART NO. MFR
C201 Capacitor, mica, 270 pf DMISE271J .
C202 Capacitor, ceramic disc, 0.01 uf 851Z5U103Z Erie
C203 Capacitor, mica, 220 pf рМ15Е2217 Elmenco
C204 Capacitor, mica, 56 pf рМ15Е5607 Elmenco
C205 Capacitor, mica, 56 pf DM15E5607 Elmenco
C206 Capacitor, mica, 330 pf DMI15E331J Elmenco
C207 Capacitor, mica, 330 pf DM15E331J Elmenco
C208 Capacitor, mica, 100 pf DMISEI101J Elmenco
C209 Capacitor, mylar, 0.1 uf С280АА/Р100К [С
C210 Capacitor, plastic, 0.5 uf 1143 Jedco
C211 Capacitor, electrolytic, 6.8 uf, 15 V P65AG06815 MEC
C212 Capacitor, mica, 75 pf DM15E7 50J ا
C213 Capacitor, mica, 130 pf DM15E131J Elmenco
C214 Capacitor, electrolytic, 10 uf, 15 V Р65АС101015 МЕС
С215 Capacitor, electrolytic, 100 uf, 15 V Р65АМ1610015 МЕС
Capacitor, electrolytic, 50 uf, 15 V
P65AK125015
Capacitor, electrolytic, 100 uf, 15 V
P65ANI610015
L202 Choke
Diode 1N273
Choke 387-1300 Wells
387-1300 Wells
70F253AI Miller
ME217
Amperex
Resistor, composition, 2.2K %10%, 1/4 watt
| REF ТЕ”
DESIG ITEM PART NO. MFR
R210 Resistor, variable, 1K MTC-4-1K Mallory
ШІ zi Resistor, composition, 2.2К 4109, 1/4 watt
R212 Resistor, composition, 470 ohms %10%, 1/4 watt
R213 £= composition, 2.2K +10%, 1/4 watt
R214 Resistor, composition, 2.2K %10%, 1/4 watt
R215 Resistor, composition, 4.7K 4109, 1/4 watt |
R216 Resistor, composition, 10 ohms 4109, 1/4 watt |
R217 Resistor, composition, 10 ohms 4109, 1/4 watt |
R218 Resistor, composition, 100 ohms +10%, 1/4 watt | |
R219 Resistor, composition, 22K+10%, 1/4 watt |
R220 Resistor, composition, 15K %10%, 1/4 watt |
| R221 Resistor, composition, 2.7K +10%, 1/4 watt
| R222 Resistor, composition, 4,7К 10%, 1/4 watt
R223 Resistor, composition, 22K +10%, 1/4 watt
R224 if Resistor, variable, 25K MTC-4-25K Mallory
R225 Resistor, variable, 68К+10%, 1/4 watt
| R226 Resistor, variable, 50K MTC-4-50K Mallory
R227 Resistor, composition, 1.8K 4109, 1/4 watt
яг
R228 Resistor, composition, 100 ohms 4100, 1/4 watt
R229 ма Resistor, composition, 1К 4100, 1/4 watt
es Resistor, composition, 12K %10%, 1/4 watt
R231 Resistor, composition, 4.7K +10%, 1/4 watt
ЕС 32 Resistor, composition, 15K 4100, 1/4 watt
R233 Resistor, composition, 150К %10%, 1/4 watt |. _ a
R234 Resistor, composition, 10 ohms 2109, 1/4 watt егете чурраи аре
R235 Resistor, variable, 5K
Resistor,
variable, 10K
6-1. Thediscriminator receives a signal from ampli-
fier andlimiter A1602 and delivers a dc voltage to the
meter with an amplitude determined by frequency
deviation. Тїе unit also delivers demodulated audio
to the discriminator output (scope) jack and to the head
phone jack.
6-2. The input signal is applied to the two sides of the
discriminatorthroughtransistors 0201 апа Q202. Тһе
low side 9201 is tuned to 270 KHZ and the high side
Q202 is tuned to 330 KHZ. The outputs of the two
transistors are applied to peak-to-peak detectors
(CR201, CR202, CR203, CR204). The rectifier cir-
cuitis referencedto a dc level by potentiometer R210.
6-3. Atthe center frequency of 300 KHZ, the signals
developed by the two sides are equal and therefore the
audio output of the circuit is zero. As the frequency
deviates, one side or the other will develop a greater
signal and therefore an audio output. The amplitude
of audio signal is determined by the amount of devia-
tion from the center frequency. The audio output is
delivered to the audio circuits through emitter follower
Q203. The audio signal is delivered to the discrimi-
nator output jacks J1603 and J1604 through resistor
R233.
6-4. Athree stage audio amplifier consisting of tran-
sistors (9204, 9205, апа Q206 is used to drive the
voltmeter circuits. Direct coupling is used between
stages апа degenerative feedback stabilizes gain. Тһе
voltmeter circuit is calibrated by setting the gain
throughthe amplifier. Potentiometer R226 calibrates
the meter for a full scale indication of 5 KHZ and po-
tentiometer R224 calibrates the meter for 15 KHZ.
6-5. Two peak reading voltmeter circuits are included
for detection of upper and lower side bands. Capaci-
tor C219 is charged positive to a peak value through
diode CR207 and slowly discharges through resistor
R232. Capacitor C218 is charged negative through
diode CR208 and slowly discharges through resistor
R230. Either circuit may be connected to the meter
by deviation switch $1605.
6-3
OUTPUT TOLFO
o O OUTPUT
SWEEP GENERATOR <p dE 4- L.F.O. BUFFER AMPLIFIER
t9vo
R30I R302 9301
39K 39K МЕ217
TO LFO "CAL"
| BEAT DETECTOR
EXTERNAL
LFO OUTPUT
R304 R306 R307 R308 R312 R313
18K 10 3.3K 22K 4.7K IK
NOTES:
|. UNLESS OTHERWISE SPECIFIED RESISTOR VALUES ARE IN OHMS +10% 1/4 WATT,
2. UNLESS OTHERWISE SPECIFIED CAPACITOR VALUES LESS THAN ONE ARE IN MICROFARADS,
THOSE MORE THAN ONE ARE IN PICOFARADS.
Figure 7-1. Schematic (Sweep Generator and Buffer)
R313 К314 R307 Q302 C304 C301 R301 Q301
Bs C302
Q303
C303
R311
R310 R302
C305 R303
ро P...
R309 C306 R305 R308 R306 R304
Figure 7-2. Component Location (Sweep Generator and Buffer)
SECTION VII
1-1
REF
DESIG ITEM МЕК
Capacitor, electrolytic, 1 uf, 15 V | МЕС
| (2302 Capacitor, electrolytic, 5 uf, 15 vdc MEC
©5305 Capacitor, electrolytic, 1 uf, 15 vdc MEC
C304 Capacitor, electrolytic, 10 uf, 15 vdc MEC
Capacitor, mylar, 0.1 uf Amperex
C306 Capacitor, ceramic disc, 0.01 uf Erie
Q301 Transistor Amperex
Transistor Amperex
Q303 Transistor Amperex
O
Ww
о
(27
Resistor, composition, 39K +10%, 1/4 watt EN
Resistor, composition, 39K %10%, 1/4 watt ОЕК ЛУ? о
Resistor, composition, 10К %10%, 1/4 watt ет ИШЕН
R304 Resistor, composition, 18K %10%, 1/4 watt тео: sc
R305 Resisto-, composition, 6.8K +10%, 1/4 watt ЕКОЕ ae
ши Resistor, morta 10 ohms 4107, 1/4 watt NBC ПО ОИ
R307 Resistor, composition, 3.3K 4100, 1/4 watt NOE SI. 2
R308 Resistor, composition, 22K +10%, 1/4 watt | a ШШЕ
R309 Resistor, composition, 2.2K 4100, 1/4 watt ЕЗ
R310 Resistor, composition, 22K 4107, 1/4 watt Ше”
R311 Resistor, composition, 22K %10%, 1/4 watt ти |
RSD Resistor, composition, 4.7K +10%, 1/4 watt А ЖЕТЕН
R313 Resistor, composition, ІК +10%, 1/4 watt Ш 1. .-
Resistor, composition, ІК 41070, 1/4 watt | ЕТПЕСЕ
7-1. Тһе sweep generator and buffer supplies the sweep 7-2. Sweep generator Q301 is a phase shift type of
voltage to assist the phase detectors in locating locks and oscillator which supplies a very low frequency (approx-
a buffer for the auxiliary LFO outputs. imately three cycles) signal. The signal is applied to
the load through emitter follower Q302.
C410 R412 C407 C413 C406
Ё > 5 £ Т R419 C411 Q404 R418 |8417 / ТР9 / 0405
PHASE DETECTOR (MAIN LOCK)
- = + +9V
R416 ,
ва
4 6401 0406 asos 22K 100 К
! га X C408 | |
сі 400-500КС
Ян T = + © IF INPUT
= E са ваг! = N
53 B 47K - TEST POINT
о
Бет у Ф | 8409 RISIA TP7
500 47K
[ AC 1
BALANCE
EM +0 TO LOCK LINE
vas L саз 1 ? be
3 = il
R401 R405 5 R415 一
IK CR402 8408 R40 | cR403 C409 IK TEST POINT i
ЁРО 47K 47K 0! R4I7 TP В :
INPUT f ЕЕ кі I мм! 10K "T
с402
20 с404 4-с405 с406 1 БЕ
res 330 T 100 T 330 Q405 ee
CR 401 六 CR404 call
,022MFD
RAI ос 9 оваз
Зу SALI i" 0403 C403 R409 R415 Q401 C402 C405
ще:
SWEEP САТЕ
+9v о -
C403 Q 404
3 CYCLE 5MFD/I5V
INPUT о TEST POINT NOTES:
ТРЭ |. UNLESS OTHERWISE SPECIFIED RESISTOR
C407 cao 1 1 VALUES ARE ІМ OHMS +10 * 1/4 WATT.
2. UNLESS OTHERWISE SPECIFIED CAPACITOR
400-500КС VALUES LESS THAN ONE ARE IN MICRO-
INPUT
GATE CONTROL
FARADS , THOSE MORE THAN ONE ARE IN
PICOFARADS.
» Ж INDICATES FACTORY SELECTED COMPONENT.
NOMINAL VALUE SHOWN.
о
> TO TRACKING
BIAS
Figure 8-2. Component Location (Phase Detector and Sweep Gate)
Figure 8-1. Schematic (Phase Detector and Sweep Gate)
SECTION VIII
8-1
DESIG ITEM PART NO.
Capacitor, 0. 1 uf
Capacitor, ceramic disc, 0. 01 uf
Capacitor, 5 uf, 15 vdc
Capacitor, mica, 330 pf
Capacitor, mica, 100 pf
Capacitor, mica, 330 pf
Capacitor, ceramic disc, 0.01 uf
Capacitor, ceramic disc, 0.01 uf
Capacitor, ceramic disc, 0.01 uf
Capacitor, electrolytic, 10 uf, 15 v
Capacitor, mylar, 0.022 uf, 200 v
Capacitor, 0.1 uf
Capacitor, 0, 1 uf
Diode
Diode
Diode
Diode
C280AA/P100K | Amprex
8512501032,
Р65АС10515
рМ15Е3317
13273
14273
0401 Transistor
Q402 Transistor
Transistor
Q403
Q404 Transistor
Q405 Transistor
Q406 Transistor
R401 Resistor, composition, 10K +10%, 1/4 watt
Resistor, composition, 2.2K +10%, 1/4 watt
Resistor, composition, 27K +10%, 1/4 watt
Resistor, composition, 6.8K +10%, 1/4 watt
R406
R407 Resistor, composition, 10K +10%, 1/4 watt
R408 Resistor, composition, 47K +10%, 1/4 watt
R409 Resistor, variable, 500 ohms
R410 Resistor, composition, 47K +10%, 1/4 watt
R411 Resistor, composition, 22K +10%, 1/4 watt
Resistor, composition, ІК +10%, 1/4 watt
Resistor, composition, 10 ohms +10%, 1/4 watt (nominal)
8-2
ITEM
Resistor, composition, 2, 2K +10%, 1/4 watt
PART NO,
Resistor, composition, 22K +10%, 1/4 watt
Resistor, composition, 47K 10%, 1/4 watt
Resistor, composition, ІК %10%, 1/4 watt
R416 Resistor, composition, 100 ohms +10%, 1/4 watt
R417 Resistor, composition, 10K +10%, 1/4 watt
R418 Resistor, composition, 1. ВК +10%, 1/4 watt
R419 Resistor, variable, 1K
R420 Resistor, composition, 10K +10%, 1/4 watt
Resistor, composition, 47K %10%, 1/4 watt
Mallory
MFR
Test Point
119437-H Ucinite
119437-H Ucinite
шилмэл ос ouma
жж? ол of таш и мона
muwa ос ouma
Figure 8-3. Phase Detector Waveforms
8-1. The phase detector receives a 400 to 500 KHZ
signal from the 400 to 500 KHZ IF and from the low
frequency oscillator. The two signals are compared
and deliver a dc tuning voltage to the high frequency
oscillator. To assist in locating locks, three addi-
tional inputs are supplied through the sweep gate.
8-2. The LFO signal is applied directly to the diode
circuitthrough Q401. As a result of the common col-
lector circuit, the signal applied through Q405 tothe
other side of the diode circuit is inverted 180^. Di-
odes CR402 and CR403 form peak-to-peak detectors,
similar to the deviation meter discriminator (see
Section 6). Dcfiltering is provided by resistors R408
and R410 and capacitors C404, C405, and C406. The
rectifier is referenced to a dc level by the sweep gate
circuit.
8-3. The 40010500 КН? from the IF amplifier А1613
is applied to the phase detector through emitter-fol-
lowerQ403. The dc output level of the phase detector
is determined by the phase relationship of the two input
signals as shown in figure 8-3. As long as the phase
relations remain stationary, the dc output level will
remain stationary. If either signal drifts in frequency,
the phase relations will change and the dc output level
will change. This change in dc level results in a re-
tuning of the HFO.
8-4. To assist the phase detector in locating a lock,
a tracking bias voltage is applied as a dc reference
voltage through Q404. The voltage is supplied from
divider network R1604 through R1614.
8-5. Tofurtherassistinlocating locks, a three cycle
sweep voltage is also applied through transistor Q404.
When lock is achieved, the IF signal into the phase
detector willbe between 400 and 500 KHZ. IF detector
Q1304 will develop a dc output large enough to allow
Q402to conduct. WhenQ402 conducts, the three cycle
Sweep voltage is effectively eliminated.
+9V (SW)
Q501 R502 C503 C502
CR503
IN273
CR504
IN273
1
| TO DISCRIMINATOR
TO HFO BEAT
DETECTOR
C505 C509 R514 C510 0503
NOTES:
1. UNLESS OTHERWISE SPECIFIED RESISTOR VALUES ARE IN OHMS IO % 1/4 МАТТ.
2. UNLESS OTHERWISE SPECIFIED CAPACITOR VALUES LESS THAN ONE ARE IN MICROFARADS, 2
THOSE MORE THAN ONE ARE IN PICOFARADS.
TO FUNCTION
SWITCH
Figure 9-2. Component Location (300KC Amplifier and Limiter)
SECTION IX
9-1
Figure 9-1. Schematic (300KC Amplifier and Limiter)
PART NO. MFR
ITEM
ceramic disc, 0.01 uf 851Z5U103Z Erie
Capacitor,
C280AA /P100K | Amperex
Capacitor, mylar, 0.1 uf
0.1 u£ C280AA/P100K | Amperex
mylar,
Capacitor,
Capacitor, mica, 360 pf DMI15E 361d Elmenco
/ Я
Capacitor, mylar, 0.1 uf C280AA /P100K | Amperex
Capacitor, mica, 1000 pf DMIS5E102J Elmenco
| 一
Capacitor, mylar, 0.1 uf С280АА/Р100К | Amperex
Capacitor, mica, 220 pf DMI15E221J Elmenco
DM15E221J
Capacitor, mica, 220 pf Elmenco
-= Ü
C280AA /P100K
86127501027, Erie
Capacitor, mylar, 0.1 uf Amperex
Capacitor, ceramic disc, 0,001 uf
Capacitor, mica, 24 pf
Capacitor, ceramic disc, 0,01 uf 851Z5U103Z
0.01 uf 851Z5U103Z
Capacitor, ceramic disc,
1N273
387-1300
Q502
thru Transistor ME217 Amperex
Q504
R501 Resistor, composition, 47K 4107, 1/4 watt
R502 Resistor, composition, 22K 4100, 1/4 watt
R503 Resistor, composition, 6.8K 100, 1/4 watt eas | ONU
R504 Resistor, composition, 470 ohms +10%, 1/4 watt pee]
| ms | Resistor, composition, 100 ohms +10%, 1/4 watt uc
Wells
Electronics
Wells
Electronics
Resistor, composition, 47 ohms 2109, 1/4 watt
R507 Resistor, composition, 47K +10%, 1/4 watt
ITEM PART NO.
Resistor, composition,
Resistor, composition,
33K 410%, 1/4 watt
100 ohms %10%, 1/4 watt
Resistor, composition,
Resistor, composition,
Resistor, composition,
100K £109», 1/4 watt
1К %10%, 1/4 watt
100 ohms %10%, 1/4 watt
Resistor, composition,
22K +10%, 1/4 watt
Resistor, composition,
Resistor, composition,
Resistor, composition,
10K %10%, 1/4 watt
150 ohms %10%, 1/4 watt
22K +10%, 1/4 watt
Resistor, composition,
1,5К +10%, 1/4 watt
Resistor, variable, 10K
Resistor, composition,
Resistor, composition,
27K +10%, 1/4 watt
270 ohms %10%, 1/4 watt
Resistor, composition, 10K 4107, 1/4 watt
9-1. Whenthe instrument is setupfor deviation meter 9-3. TYPICAL VOLTAGES. With the unit adjusted
operation, the amplifier and limiter receives a signal asadeviation meter and the limiter current set to the
witha 300 KHZ center frequency from the beat detec- red line, the following are typical voltages:
tor. Theunit delivers an amplified and limited signal
to the discriminator.
a. 200 mv peak-to-peak measured at the collector
of Q501.
9-2. The two amplifiers Q501 and Q502 are stagger
tuned (L501 tuned to 270 KHZ and L502 to 330 KHZ) to
provide broad band amplification of a frequency modu-
b. 4 v peak-to-peak measured at the collector of
lated signal. Тһе limiter Q503 and 0504 provides a ОЛ:
fixed output level. The auxiliary output to the meter
from diode CR501 provides a means for measuring c. 400mv peak-to-peak measured at C514 (approxi-
the input level to the limiter.
mately square wave).
AMPLIFIER
BLOCKING OSCILLATOR
SHAPER BUFFER
: кво!
|
一 站 一 е 十 9V و
R607 R609 C604 R610
E 15K 1K 220 220
Q602
2NI742
C605 Q604 TO 13 MHZ HARMONIC
2NI742 MULTIPLIER 100
0603
МЕ217 ТО | МН2 САШВВАТ!ОМ
OUTPUT JACK
R6OR
IK
TO | MHZ HARMONIC
GENERATOR (17-28 MHZ)
чн
OEXTERNAL MODULATION
у RMS
NOTES:
|. UNLESS OTHERWISE SPECIFIED RESISTOR VALUES ARE IN OHMS + IO % 1/4 WATT.
2. UNLESS OTHERWISE SPECIFIED CAPACITOR VALUES LESS THAN ONE ARE IN MICROFARADS,
THOSE MORE THAN ONE ARE IN PICOFARADS.
Figure 10-1. Schematic (Spike Generator)
R601
R603
C601
C603
R607
0602
С605
R609
R610
C604
C606
R611
9605
C607
R613
R605 9601 R602
R615
R604
C602
R606
R608
Q603
Q604
T601
R612
R614
C608
Figure 10-2. Component Location (Spike Generator)
SECTION X
10-1
REF
C601 Capacitor, ceramic disc, 0.01 uf
C602 Capacitor, electrolytic, 5 uf, 15 vdc
C603 Capacitor, mica, 33 pf
C604 Capacitor, mica, 220 pf
C605 Capacitor, mica, 100 pf
C606 Capacitor, ceramic disc, 0.01 uf
Capacitor, ceramic disc, 0.01 uf
Capacitor, ceramic disc,.0.01 uf
R601 Resistor, composition, 27K +10%, 1/4 watt | auc OE ТИЕК
R602 Resistor, composition, 4,7К +10%, 1/4 watt ГГц ман
R603 Resistor, composition, ІК %10%, 1/4 watt P S
R604 Resistor, composition, 100 ohms 4107, 1/4 watt Be NEMUS T us
C607
C608
Q601
Q602
0603
0604
0605
К605 Resistor, composition, ІК %10%, 1/4 watt
R606 Resistor, composition, 390 ohms 4100, 1/4 watt A EST S dr
R607 Resistor, composition, 15K 4107, 1/4 watt
R608 Resistor, composition, ІК 51095, 1/4 watt
Mo E
mu КЕ ЖИНИ
R609 Resistor, composition, ІК 4107, 1/4 watt LoT FERRE
R610 Resistor, composition, 220 ohms 2109), 1/4 watt E ИЕН
R611 Resistor, composition, 27 ohms +10%, 1/4 watt АН NS
R612 Resistor, composition, 2.2К +10%, 1/4 watt КАТ ИЛ ЕКІН
К613 Resistor, composition, 330 ohms %10%, 1/4 watt hat. КЕБЕ
R614 Resistor, composition, 100 ohms 4109, 1/4 watt a Cs
ЫЕ" U
R615 Resistor, composition, 100 ohms %10%, 1/4 watt
T601 Transformer
10-2
10-1. The spike generator receives a 1 MHZ sine
wave signal from crystal oscillator assembly A1608
anddelivers 1 MHZ spikes to MHZ selector assembly
A1607, MHZ multiplier assembly A1605, and 1 MHZ
OUTPUT connector J1606. Audio from a modulation
source is converted to frequency modulation and ap-
plied through the time base to the output signal.
10-2. The incoming signal is amplified by amplifier
Q601 and applied to shaper stage 0602 and 0603, Since
the transistors are opposite types, the direct coupling
provides positive feedback and the stage operates simi-
lartoamultivibrator. The square wave output is con-
vertedto spikes by the differentiator in the output cir-
cuit.
10-3. When audio is applied through the external
modulation connector, the audio functions as a vari-
| MHZ
| MHZ - 30 HZ —— | MHZ - 30 HZ
able bias on the shaper (see figure 10-3). The change
in bias affects the point in time when the shaper is
triggered to the opposite state. The change in trig-
gering time affects the time between pulses and thus
effectively the pulse frequency. Тһе amount of fre-
quency change is determined by the amplitude of the
audio input. This type of circuit is sensitive also to
the frequency of the audio input. To provide a rela-
tively constant deviation regardless of the audio fre-
quency, RC circuit (C602 and R606) operates as a de-
emphasis circuit.
10-4. The spike output of the shaper is applied to
blocking oscillator Q604. The blocking oscillator
provides output pulses with sharp rise and fall charac-
teristics. The output of the blocking oscillator is ap-
plied directly to the MHZ selector and through buffer
Q605 to the MHZ multiplier and the output connector.
TRIGGER LEVEL
І MHZ INPUT
WITHOUT AUDIO INPUT
OUTPUT SPIKES
WITHOUT AUDIO INPUT
OUTPUT SPIKES
WITH AUDIO INPUT
TRIGGER LEVEL
| MHZ INPUT
PLUS AUDIO INPUT
/ Figure 10-3. Modulation Circuit Waveforms
У 16
| К
PE y ка
EL
um pum «тру ла ЛАН
i РИ чинэ, 17) ХДЖ, БОИ YA k TEM.
ap no QN RS ААА vt ye 1 ШП 5)
TUIS MET MENT 6) [TUM
E N gi tdi p "i Perd pu Lond м | qM Яг | 0)
ДЕК s yt
) үй | M itt. E Мо 1 J 3 Р
quina, SUA qup ТҮР LN
iN Mae dia:
г.
, ч
^ і Ч | ) K ve eH А
` “эр? Е
y М if bA E
і | A ) ( i 5 PD
| ! 4 ? hh ч 1 b ULT
137. 4 mA 1 7
iia
£
4 ще а,
Cod
у з a
Uo 5
nv ЖАЙ L N (
i 8 ! I LAP р 19
[ TIP )
инт
TELE "SG mtt over
40 D NI š
L702 C706 C708 8715
BUFFER --10 (I00 KC) + го (SKC) TO 9V THROUGH
+ ду = Тен LOCKED NORMAL
вто SWITCH
100
R704 C704 вти +lc7os 8713 C708
47K 1600 то -Т 5MFD $47K «05
ТО LOCKED
NORMAL SWITCH
сто! R7I2 TP 10
100 2.2K }
IMC بسا e o TEST POINT
INPUT 1 C707
-Ol О БКС SPIKE
OUTPUT
== = =
ТРИ
TEST POINT
— TO |00KC
NOTES HARMONIC SELECTOR
1, UNLESS OTHERWISE SPECIFIED RESISTOR VALUES ARE IN OHMS EIO% 1/4 WATT.
2. UNLESS OTHERWISE SPECIFIED CAPACITOR VALUES LESS THAN ONE ARE IN MICROFARADS,
THOSE MORE THAN ONE ARE IN PICOFARADS.
3, INDICATES FACTORY SELECTED VALUE Ж
4. ALL TRANSISTORS ARE TYPE 2N3904-5
Figure 11-1. Schematic (Frequency Dividers)
ITEM
=|
PART NO. MFR
Capacitor,
mica, 100 pf
рм15Е1017 Elmenco
Capacitor,
electrolytic, 5 uf
Р65АС10515 МЕС
Capacitor,
mica, 100 pf
рм15Е1017 =
Capacitor,
mica, 1600 pf
рм19Е1621 Elmenco
Capacitor, mica, 680 pf DM15E681J Elmenco
Capacitor, electrolytic, 5 uf P65A10515 MEC
Capacitor, ceramic disc, 0.01 uf 851Z5U103Z Erie
Capacitor, plastic, 0.05 uf PVC215 Mallory
Capacitor, ceramic disc, 0.01 uf 8512501032. Егіе
Г C710 Capacitor, mica, 8200 pf DM30E822 1 227
C711 Capacitor, mica, 330 pf DM15E331J Elmenco
CR701 Diode 1N273 |
1-701 Coil 387-3000 27 Wells
=
1702 Coil 387-40M Wells
L703 Coil, 2,5 uh 70F253AI Miller
0701 Transistor ME217 Tg Amperex
9702
thru Transistor ME216 Amperex
Q705
R701 Resistor, composition, 39K %10%, 1/4 watt
R702 Resistor, composition, 4.7K 2109, 1/4 watt
R703 Resistor, composition, 1K +10%, 1/4 watt
R704 Resistor, composition, 47K +10%, 1/4 watt
Resistor, composition, 15K +10%, 1/4 watt
Resistor, composition, ІК 4107, 1/4 watt
Resistor, composition, 470 ohms 4109, 1/4 watt
Resistor, composition, 15K +10%, 1/4 watt
Resistor, composition, 4.7K 4109, 1/4 watt | Sire
ШЕН eem cem ame кйш | БЕНЕН БЕНЕН
Resistor, composition, 470 ohms 4109, 1/4 watt ES ЕТЕ
11-2
PART NO.
REF
— ITEM
R712 Resistor, composition, 2, 2K 410%, 1/4 watt
R713 Resistor, composition, 47K +10%, 1/4 watt
R714 T Resistor, composition, 15K 4109, 1/4 watt
R715 Resistor, composition, 100 ohms +10%, 1/4 watt
R716 Resistor, composition, 330 ohms +10%, 1/4 watt
R717 Resistor, composition, 330 ohms %10%, 1/4 watt
R718 Resistor, composition, 15K +10%, 1/4 watt
R719 Resistor, composition, 4.7K 410%, 1/4 watt
ТР10 Test Point 119437-H Ucinite
TDI Test Point
119437-H Ucinite
11-1. The frequency divider receives а 1 MHZ signal
from the crystal oscillator and delivers a 100 KHZ
signaltothe 100 KHZ selector A1610 and a 5 KHZ sig-
nal to audio А1606.
11-2. The 1 MHZ signal is applied through buffer
Q701tothe divide-by-ten circuit Q702 апа Q703. Тһе
divider is a multivibrator tuned by сой 1,701 to be
synchronized when the tenth input sine wave is applied.
The divide-by-twenty circuit Q704 and Q705 is similar
except that the circuit is tuned by coil L702 to be syn-
chronized when the twentieth input sine wave is ap-
plied.
11-3. TYPICAL VOLTAGES. With a 0.8 to 1.0 v
peak-to-peak input at C701, the following are typical
voltages:
a. 3 v peak-to-peak measured at test point ТР11.
The waveform should be a partially-squared
sine wave.
b. 8 v peak-to-peak spikes 5 KHZ measured at
ТР10.
BUFFER I MHZ OSCILLATOR
TO SPIKE o—— = Е ы к у + 5 + AM} —0 sv
GENERATOR R803 R807
= T 100 100 i
= | Leol C804 3 R806 : ввов || Ісвов
01 4.7K 220K Перо
| esos” її ас pec zi.
| 620 = 33K =
TO IOO KHZ O- ра л $ |
DIVIDER б сво9
一 сво .001 саг f с1648
WA C806 68 .6-14pf
— — 9:5--1| at
| я 001
ово! авог +
ME 216 ME 216 لا
4 | | MHZ dre
CRYSTAL! == |
- е | al
!
У , E 1
!
cao? + Во! + c805 5 R805 R809 3 сё cs =
го! 470 | IOK 100 500 500
үке 2252
aa. луМУ — — ЇЇ
Ч CR8OI R802 C807 a
= MAS 22K .01 =
NOTES:
|. UNLESS OTHERWISE SPECIFIED RESISTOR VALUES ARE IN OHMS 1 IO % 1/4 WAT T.
?. UNLESS OTHERWISE SPECIFIED CAPACITOR VALUES LESS THAN ONE ARE IN MICROFARADS,
THOSE MORE THAN ONE ARE IN PICOFARADS.
Figure 12-1. Schematic (Crystal Oscillator)
C803 R803 C802 C801 C806
C808
/ к R807
L801
52 808806
R804 по а 0802
9801 C809
R808
R809
C805 C811
u — YF 810
К801 R805 CR801 8802 C807
Figure 12-2. Component Location (Crystal Oscillator) SECTION XII
12-1
DESIG ITEM PART NO,
<
Hj
由
C801 Capacitor, mica, 0.0033 uf DM19E332J Elmenco
C802 Capacitor, ceramic disc, 0.01 uf 8517501037 Erie
C803 Capacitor, mica, 620 pf DM15E621J Elmenco
C804 85125171037, Етіе
2)
З
Hj
Capacitor, ceramic disc, 0.01 uf
C805 Capacitor, mylar, 0.1 uf С280АА/Р100К | Amperex
C806 Capacitor, ceramic disc 8612501027, Егіе
С807 Capacitor, ceramic disc, 0.01 uf 8512501037 Erie
C808 Capacitor, ceramic disc, 0.01 uf 851Z25U103Z Erie
C809 Capacitor, ceramic disc, 0.001 uf 9615102 Erie
C810 Capacitor, mica, 500 pf DM15E501J Elmenco
C811 Capacitor, mica, 500 pf DM15E501J Elmenco
21:12 Capacitor, 68 pf TCZ-68 Centralab
CR801 Diode 1N273
L801 Choke 387-60 Wells
M E216 Amperex
Q801 Transistor
ME216 Amperex
0802 Transistor
R801 Resistor, composition, 470 ohms 4100, 1/4 watt
Resistor, composition, 22K 51090, 1/4 watt
Resistor, composition, 100 ohms 4109, 1/4 watt
R804 Resistor, composition, 33K +10%, 1/4 watt
Resistor, composition, 10K 4107, 1/4 watt
Resistor, composition, 4.7K £109, 1/4 watt
Resistor, composition, 100 ohms %10%, 1/4 watt
Resistor, composition, 220К +10%, 1/4 watt
Resistor, composition, 100 ohms 4107, 1/4 watt
12-1. The crystal oscillator supplies a stable, ac- rectified (CR801) AGC voltage to the oscillator through
curate 1 MHZ signalto spike generator assembly A1608 resistors R802 and R809 and capacitor C807. The
and to frequency divider assembly A1612. buffer is tuned by coil L801. The crystal is adjusted
to frequency by MHZ ADJ capacitor C1648.
12-2. The oscillator Q802 is a modified Pierce cir-
cuit designed for stable performance regardless of 12-3. The output of the crystal oscillator (measured
supply voltage changes. The oscillator is isolated at C801) should be between 0.8 and 1.0 volts peak-to-
from the load by buffer Q801. Тһе buffer supplies а peak.
12-2
NOTES
1, UNLESS OTHEWISE SPECIFIED RESISTOR VALUES ARE IN
2N669 AV V ——. eo
RIGIT RI6I6 |
_| 470 22K |
7981602: cies? |
sc-2 4750 MFD |
15У
N REG) O = 3 |
DC INPUT Ч 51607 1 с1666
LOS 100 MFD /15М
ЭЭ ср
АС INPUT |
\ 1601 хэс = +
|
VA A / 115V 2 +9V
W8A/230V тісі Косе
ғ1601 š 680 ся994 | | EA
+ к} г SWITCH
CES BST о
1
8 مو لها то
370K j | FUNCTION
© SWITCH
Q 903 8914
EP 2NIIBA 50K
=: | MI6OI
R909 0-50 pA
ЕЕС КР VE ر IK R9I2
€ 99] 8903 0902 ° : 470 全
2077 = P
1000 MFD/25V
R907 [ng ust
51608 IK ROIS FUNCTION
[+ $ УУУу- + ЇЕ SWITCH
CR 902 | T S ЇГ
5с-2 大 +1 сәо4а |cs06 | coo7 Lt R910 =
=] (00MFD | 0 1OOMFD | — 1K
CR903| 15 y 15v
+ + e
OHMS Š IO % 1/4 WATT.
2. UNLESS OTHERWISE SPECIFIED CAPACITOR VALUES LESS
THAN ONE ARE IN MICROFARADS, THOSE GREATER THAN
ONE ARE IN PICOFARADS.
CRYSTAL OVEN
THERMO-
STAT
PEREK
HEATER
01601
J]
К914 CR904 СК901
o
bs 2 | з | 4 | Sv ewig | в |
051601 = |
#344
, AAA.
RI6I8 RI6I5
330 20/5W
BATTERY CHARGE
1
С901
Figure 13-1. Schematic (Power Supply)
Q901 R903 CR902 R909 C906 C907 CR903 C904
кул Мари од:
Ч
an
+
Z
š
са
[74
2
Figure 13-2. Component Location (Power Supply)
R908 C905 R910 Q902 R906 Q903
SECTION XIII
13-1
REF
DESIG
Capacitor, electrolytic, 1000 uf, 25 vdc
Capacitor, electrolytic, CS U 25 мас
Capacitor, ceramic disc, 0.01 uf
C904 Capacitor, electrolytic, 100 uf, 15 vdc
C905 Capacitor, electrolytic, 10 uf, 15 vdc
C906 Capacitor, ceramic disc, 0.01 uf
C907 Capacitor, electrolytic, 100 uf, 15 vdc
CR901 Diode Bridge
Diode SC-2
gu a E
C901
C902
C903
CR 902
CR 903
Q901
Q902
Q903
R901 Resistor, composition, 1.3 ohms 41095, 1 watt MN A
R902 Resistor, composition, ІК 4100, 1/4 watt РР РиВА
R903 Resistor, composition, 10 ohms +10%, 1/4 watt MM ee
R904 Resistor, composition, 1.5K +10%, 1/4 watt КОН
R905 Resistor, composition, 8.2K 4107, 1/4 watt m MT
R906 Resistor, composition, 470 ohms %10%, 1/4 watt E d
R907 Resistor, composition, ІК +10%, 1/4 watt
R908 Resistor, composition, 680 ohms 41006, 1/4 watt ПИШИ
R909 Resistor, variable, 1К MTC-4-1K Mallory
R910 Resistor, composition, ІК +10%, 1/4 watt
RIA Resistor, composition, 270K 4107, 1/4 watt и:
В912 Resistor, composition, 470 ohms +10%, 1/4 watt
R913 Resistor, variable, 1К MTC-4-1K Mallory
R914 Resistor, variable, 50K MTC-4-50K Mallory
13-2
13-1. The power supply provides 9 vdc regulated and
12 vdc unregulated power for normal operation or
12 to 15 vdc power for battery charge.
13-2. When ac power is used, the power isconverted
to dc by the power supply (transformer T1601 and
rectifier bridge CR901). When 115/230 switchis turned
to the 115 position, the dual primaries of transformer
T1601 are placed in parallel. With the switch in the
230 position, the primaries are placed in series.
13-3. Either rectified ac or a dc input is filtered and
regulated in the power supply. Transistor Q1602 is
the series element and transistor Q902 provides dc error
amplification. Transistor Q902 is referenced by Zener
diode CR903 and the error signal is applied through
transistor Q903. Potentiometer R909 sets the output
voltage to 9 vdc when the battery charge switch S1606
is turned to the OPERATE position. With the switch
in the BATTERY CHARGE position, potentiometer R913
is placed in parallel with R909 and sets output voltage to
approximately 15 vdc.
13-3
T. ЖОЛАУ
po АА жад
„Жл ЦЭ, No жа m ae шог
АР 524 м, 5044: Манлай ете
T 2 ‚рил AUi |
Eus праців злу n j or
And. pesti ch TA 4 170 мае MA
T TT is 2127Ж СО RAT TN bsp йл ee
4i т Е
3 ( 4
"m | АЧ
ёс 3 Le Whigs T |
| ГА) ии Sed m n я
|
`
| | Ё
e Am
E à деди: ша
1 irm
j ща.
ї | 8 WAT v "m
ы Се «До wA se. als NU nw
1
мат Y
ANTENNA OUTPUT TO
ATTENUATOR о 20-32 MC IF
ТІ; үр TA MIKER FREO MULT
(20-32 MC) (130 MCÍ
- ++
|
56 š ! сов ^
2.2
6 | !
5 |
| |
4 |
| |
= | 01005 CIOI7
| | (中 001 киме
2 sso $ | n / INPUT
| | RIO25
+
1 І
Bed) УЖЕ ЕСІ
------- RIOIT. RIOIS
ИГ .8 100 100
BEAT DETECTOR
(AUDIO — 450 KC)
HFO BUFFER
(150-162 MC)
С1020
001
4 D
cloo7 | C!008| Riolz
100 100 22K
TO
FUNCTION
SWITCH
RIO24
22K
NOTES;
|. UNLESS OTHERWISE SPECIFIED RESISTOR VALUES
ARE IN OHMS £ 10% 1/4 WATT.
2. COMPONENTS MARKED WITH 3K HAVE A FACTORY
1 SELECTED VALUE. NOMINAL VALUE SHOWN.
3. OUTPUT SWITCH:
FUNCTION
CR 001
IN 914
. UNLESS OTHERWISE SPECIFIED CAPACITOR VALUES
LESS THAN ONE ARE IN MICROFARADS, THOSE
GREATER THAN ONE ARE IN PICOFARADS.
n
Figure 14-1. Schematic (High Frequency Oscillator)
С1006 ©1006 C1022
C1005 T1001 ©1001 R1009 R1003 C1020 C1003
С1002
CR1002 CKI001
C1007
Q1002
T1002 С1010 С1016 Q1005 С1014 К1021
Figure 14-2. Component Location (High Frequency Oscillator)
| SECTION ХІУ
|
|
|
PART МО. MFR
Capacitor, ceramic disc, 86125U102Z Erie
Capacitor, mica, 100 pf рМ15Е1017 Elmenco
Capacitor, mica, 100 pf рМ15Е1017 Elmenco
Capacitor, ceramic disc, 0.001 uf 861Z5U102Z Erie
Capacitor, trimmer, 2 to 8 pf 538-006NP02-8 | Erie
Capacitor, mica, 100 pf рМ15Е1017 Elmenco
Capacitor, mica, 100 pf рм15Е1017 Elmenco
Capacitor, mica, 100 pf рМ15Е1017 Elmenco
861Z5U102Z
Capacitor, ceramic disc, 0.001 uf
Capacitor, mylar, 0.1 uf C280AA/P100K | Amperex
861Z5U102Z
ceramic disc,
Capacitor,
Capacitor, 6.8 pf TCZ-6.8 Centralab
Capacitor, 86125010272,
Capacitor, mylar, 0.01 uf С280АА /P10K
Capacitor, ceramic disc, 0.001 uf 861Z5U102Z
Capacitor, mica, 100 pf рм15Е1017
Capacitor, ceramic disc, 0.001 uf
Diode 1N4148
Diode, capacitive reactance 562
Diode, capacitive reactance
0.001 uf
ceramic disc,
1N273
Transitron
14-2
REF
DESIG ITEM PART NO. MFR
Q1002 Transistor 2N3283
Q1003 Transistor 2N1742
Q1004 Transistor 2N1742
Transistor 2N1742
Ж 01006 Transistor 2N3283
R1001 Resistor, composition, ІК 4100, 1/4 watt
R1002 Resistor, composition, 100 ohms 4107, 1/4 watt
ІШ
R1003 Resistor, composition, 47 ohms +10%, 1/4 watt
R1004 Resistor, composition, 1.8K 2109, 1/4 watt
R1005 Resistor, composition, 4.7K 4100, 1/4 watt
R1006 Resistor, composition, 56K +10%, 1/4 watt
R1007 Resistor, composition, 330 ohms +10%, 1/4 watt
R1009 Resistor, composition, 100 ohms 4100, 1/4 watt
R1010 Resistor, composition, 100К %10%, 1/4 watt
R1011 Resistor, composition, 10K 4100, 1/4 watt
R1012 Resistor, composition, 22K 4100, 1/4 watt
R1013 Resistor, composition, 4.7K +10%, 1/4 watt
R1014 Resistor, composition, ІК 4107, 1/4 watt
R1016 Resistor, composition, 470 ohms %10%, 1/4 watt
R1017 Resistor, composition, 100 ohms +10%, 1/4 watt
R1018 Resistor, composition, 100 ohms +10%, 1/4 watt
R1019 Resistor, composition, 100 ohms %10%, 1/4 watt
R1020 Resistor, composition, 47 ohms +10%, 1/4 watt
R1021 Resistor, composition, 1K +10%, 1/4 watt
R1022 Resistor, composition, 10K +10%, 1/4 watt
R1023 Resistor, composition, 1.5K +10%, 1/4 watt
R1024
Resistor, composition, 22K +10%, 1/4 watt
R1025
R1026 Resistor, composition, 100 ohms +10%, 1/4 watt
R1027 Resistor, composition, 4, 7K nominal value
Resistor, composition, 100 ohms +10%, 1/4 watt
\
Resistor, composition, 150 ohms +10%, 1/4 watt
R1028
Resistor, composition, 6.8K +10%, 1/4 watt
R1030 Resistor, composition, 220 ohms +10%, 1/4 watt
Resistor, composition, 100 ohms +10%, 1/4 watt
14-1. The high frequency oscillator board receives a
66 MHZ signalfrom megacycle oscillator A1608 and a
dc tuning (lock) voltage from phase detector A1614.
The HFO produces Ше 150to 162 MHZ standard signal.
14-2. The 66 MHZ signal is applied to multiplier
Q1005. The output circuit of the multiplier is tuned
to the second harmonic (132-МН2) by transformer
T1002. Тһе 132 МН? output signal is applied to mixer
Q1003. Тһе 152 to 164 MHZ signal from НЕО Q1004
is also applied to the mixer. Тһе 20 to 32 MHZ dif-
ference frequency is applied to MHZ selector A1607.
14-3. The HFO Q1004 is a tuned collector oscillator
which uses voltage tunable, capacitive reactance di-
odes CR1003 and CR1004 as the tuning elements. The
lock voltage from the phase detector is applied to the
diodes through a dc filter circuit. Тһе output of the
oscillator is applied through buffer Q1002 to the input/
output circuit.
14-4. Тһе output circuit of the buffer is tuned by ca-
pacitor C1005. The output of the buffer is applied
through diode CR1002, operating as a harmonic gen-
erator, to the output circuit through capacitor C1003
or to beat detector Q1001 through capacitor C1002.
The beat detector is designed for good response to low
frequency beat notes.
14-5. Outputlevelis set by the attenuator and by bias
control of buffer Q1002. The attenuator consists of
four 20 db pads which may be added in series. When
the attenuator switch is turned to the antenna position,
one section of the switch selects a fixed bias voltage
for the buffer. In the remaining positions the bias
may be varied by potentiometer R1601.
14-3
ЭГ T
й ёс 5 d е ! й А
Ñ 7 "nm цан T Xu % + 1 Т хал К: L 0 amp wai 4
1 TD М % ry b. Л M ha гу f I p n aM У WP TIE 4 | A ЦЭ
i Е "M. КМ, Us НУО СОР
12 | КИ. е Yi A PN: — re | t EB ۶ ji
N j ЧЕ 0 Ши TM ГА" 727 4 E нее
Ч лала асына 1,
| 458 E Er а Es oit. —-
i mL | ЖЕ”? me jeher Mw г 1) | H Е I АМ,
| Rial avî Г Фк; m Дан рч EE Y P ЕТТІ, 1
é i | 1 I
| "m pst Ч iy ve
а, vw aá, 1 A LE гэрээ K. I Е AN P
; Ж í » i
| b j we D ақ E ae n - ЕТ "бо
' ТО қ PLE я AGI. i lt А ey i
(ғы Е - і
їл di^ 4 А
A у Ива L3 1 шч;
( 4 | i ie СЕ
i í MY i n ШҮ” 277) І án
NV I
si FAN q > 19347 ЛІЛЕ
| ares y , v го ері
i}
T. ед за TUS du 4 "о; TUR. IMS 17 а тъч | к р n ШЕ” i «а қ T.
LE ^y M WA M С ба л
і Ге Apu
Ын VM ap АРК ОР D gt ir dM T 6 ма
МОЛІ Ди алы МЮ woe em. CHE за AM
j ; і “ғұ "Т і
Ж.” к nd uw t % 4%
"шау жү) 24 mia. e i) Пече
12 ye. о SAL и Диме |
b ыц Й KB А ий Ч
THY n
"Jf T ЯМ - 1 1 ai
qt и ү
rp end E SU ME Ue 4
ad rh» 4 4 La fay М M мій Цэнд М
ЖЖ Ре V Jail (Бурын қ
isa diete WA pee, ГЖ.
“МЕН м hti м “чый у, ja (Wi -
om (М еи (tn #3)
Үр ен MIN
А twin ! Е" " A
t t $ oF Ч! у n ШІСІ мэ: иту даи
17
in | Ку Са
TO HFO
BEAT DETECTOR үс 203 ==
一 FUNCTION SWITCH
BESTT As = o
І 5 1602 | 1
І
IF le Ic |9
D T т
7 z 2 TO EXTERNAL
6 6 DC |
ій 5 X 115 C INPUT
TO FM
T AUDIO OUTPUT EXE TO FM
Ier = да 4 хоол DEV. CKT,
-| спо
ТТЕВҮ CHARGE} \— — — — — —
+T -5МРо/15ч PRE - AMPLIFIER я AUDIO OUTPUT сало wih
A * сиот | + - + (UNREG)
470 00 =
но! Б] WEDI
27K 22K M
свиог
CHO2 сі RII06 A
пог cios s IN273 у
мівої
0-50MA
33K
Ta VOLUME
0102 CONTROL
МЕ217
1000 MFD
8059 С105|» Rioe [+ CI
2.7K 100 33k T— 1
I
мғо/ |”
15У
— + +
15% РНОМЕЅ
J602
2NII93
106
OCMFD RINO
5v 3.3K
RIIS
47K
RING RIII? тив ви!
10 2.7K ік ік
TWIN TEE NOTCH FILTER
LFO BEAT DETECTOR
NOTES:
түг2 па 1. ALL RESISTOR VALUES ARE IN OHMS + 10%
2.7K 4.7K ŞKHZ
Е 1/4 WATT UNLESS OTHERWISE SPECIFIED.
EE Крит 2. FUNCTION. SWITCH:
22 100
сив RII24 свиоз LFO
047 10K IN275 НЫН,
сив (400-
„001 | зоокн2)
RIIS =
ДЕ 3. UNLESS OTHERWISE SPECIFIED CAPACITOR
VALUES LESS THAN ONE ARE IN MICRO-
| FARADS,THOSE GREATER THAN ONE ARE
са” R20 спів IN PICOFARADS.
| E шаг «0!
[pert +
Figure 15-1. Schematic (Audio)
CR1103
C1106 C1102
C1113
R1124
C1116
R1123 С1115
C1114
R1120
С1119
R1119
К1Я 16
R1115
C1104
R1103
R1105
R1121
C1103
R1117
R1106
R1118
R1108
R1109
C1109
R1110
К1113
= тт)
R1101 + — |
R1107 EE -- -
к1104-- -
О1102— ГР, 3
R111]
R1112
CR1101/ ©1104 | C1108
C1112 Q1105 Q1103
Figure 15-2. Component Location (Audio)
SECTION XV
15-1
ITEM
REF
DESIG
PART NO.
Capacitor, electrolytic, 5 uf, 15 vdc
Р65АС10515
С1101
C1102 Capacitor, electrolytic, 10 uf, 15 vdc
C1103
Capacitor, ceramic disc, 0.005 uf
Р65АС101015
8012505022,
Capacitor, ceramic disc, 0.001 uf
C1104
C1105
С1110
C1111
Capacitor, mylar, 0.01 uf
Capacitor, mylar, 0.01 uf
Capacitor, electrolytic, 100 uf, 15 vdc
Capacitor, electrolytic, 100 uf, 15 vdc
Capacitor, electrolytic, 100 uf, 15 vdc
Capacitor, ceramic disc, 0.001 uf
Capacitor, mica, 100 pf
Capacitor, electrolytic, 25 uf, 15 vdc
Capacitor, electrolytic, 1000 uf, 15 vdc
Capacitor, mylar, 0.047 uf
Capacitor, mylar, 0.047 uf
Capacitor, mylar, 0.047 uf
Capacitor, mica, 100 pf
Erie
8612501022 Егіе
Р65АМ1610015
8612501022 Егіе
рМ15Е1017
Elmenco
P65AG122515 MEC
P65AR24100015
C280AA/P47K
Amperex
C280AA/P47K
С280АА/Р10К | Amperex
C280AA/P10K | Amperex
Transistor
及 1101 Resistor, composition, 27K 4109, 1/4 watt
R1102 Resistor, composition, 22K 4109, 1/4 watt
| виз | Resistor, composition, 8.2K +10%, 1/4 watt
15-2
ITEM
Resistor, composition, 22K 4109, 1/4 watt
PART NO,
Resistor, composition, 2.7K %10%, 1/4 watt
R1106 Resistor, composition, 3.3K %10%, 1/4 watt
R1107 Resistor, composition, 470 ohms + 10%, 1/4 watt
R1108 Resistor, composition, 100 ohms %10%, 1/4 watt
R1109 Resistor, composition, 27K 2109, 1/4 watt
R1110 Resistor, composition, 3,3К +10%, 1/4 watt
Resistor, composition, 2.2K 4107, 1/4 watt
R1112 Resistor, composition, 3.9K 4100, 1/4 watt
R1113 Resistor, composition, 10 ohms 41009, 1/4 watt
R1114 Resistor, composition, 33K %10%, 1/4 watt
R1115 Resistor, composition, 4.7K 4107), 1/4 watt
R1116 Resistor, composition, 10 ohms 4100, 1/4 watt
R1117 Resistor, composition, 2.7K 4109, 1/4 watt
Resistor, variable, 1K
Resistor, variable, 500 ohms
Resistor,
composition, 1.2K +10%, 1/4 watt
MTC-4-1K Mallory
MTC-4-500
Mallory
Resistor, variable, ІК
Resistor,
composition, 2.7K 4100, 1/4 watt
MTC-4-1K
Resistor,
composition, 4.7K 4109, 1/4 watt
Resistor,
composition, 10К %10%, 1/4 watt
15-1. Theaudiocircuit receives signals from the beat
detectoror the discriminator and applies audio output
to a speaker or the meter, The circuit can also re-
ceive 5 KHZ signals from the frequency divider and
the LFO and deliver beat notes to the speaker and
meter.
15-2. With the function switch 51602 in position 1,
the LFO output signal is compared to harmonics of
the 5 KHZ spike input in the LFO beat detector. The
audible 5 KHZ component is eliminated in the twin tee
notch filter. The beat notes are applied to the audio
preamplifier consisting of transistors Q1101 and
Q1102.
15-3. With the function switch in position 2, beat
notes from beat detector Q1001 are applied to the audio
preamplifier.
Audio from the preamplifier or from
the detector driver of the discriminator is amplified
by amplifier Q1103 and push-pull amplifiers Q1104 and
Q1105.
15-4. TYPICAL VOLTAGES.
switch set to CAL and with a beat frequency of ap-
proximately 200 HZ (one division of the LFO dial), the
following are typical voltages:
With the FUNCTION
a. 5 mv peak-to-peak measured at the base of
Q1101.
b. 150туреак-іо-реак measured at the emitter of
Q1102.
c. 15 v peak-to-peak measured at the emitter of
01104,
C1212 L1203 C1210 C1208
Q1204 11204 С1214 С1213 01203 C1207 L1202 R1203 R1205
MULTIPLIER (XI3) BUFFER AMPL (ІЗ МС) MULTIPLIER(X5)
+ + — + as -
= | RES feo ГЭВЧ ЗР LOT ST,
RI20! сї202 $Ri202 | с205 $91205 20101202 | сігов [cizo нгі ЭМ гоз | сз cizia
T оо Šik T ео $ вк Si T ezo T өс 215 Ж T ea 100
| | 7
— — |
Ri203 Ci207 сг
| 4 по 15 |
vv 一 ==) | (жек сав
|
| |
сігоі | |
Tum i айо, RA | агог 2 | 91203 |
эпке оо sese (T inem речо (
INPUT 7 Bu | |
EIS — | = =
= cl203 R1208 R
по mt 10
TE 1209 AN —
! 160 1
|
го: ні206 Rizo7 вгн Ri2I2
! ATK ік 一 22K ік
| R1204 - Ri2oS
100 100
+ + 一 全 + + 4
C1204 C1206 上 си
Те or оо!
NOTES:
1. UNLESS OTHERWISE SPECIFIED RESISTOR VALUES ARE IN OHMS £ Ю% 1/4 WATT.
2, UNLESS OTHERWISE SPECIFIED CAPACITOR VALUES LESS THAN ONE ARE IN MICRCFARADS,
THOSE MORE THAN ONE ARE IN РЇСОРАНА05.
Figure 16-1. Schematic (Megacycle Multiplier)
L1201
C1205
C1217 C1203
Q1202
C1216
R1213
R1215 C1204
R1217
Q1201
R1216 C1202
К1219 К1202
С1215
R1218
Figure 16-2. Component Location (Megacycle Multiplier)
C1201
R1207 С1206 К1206 R1204 К1201
SECTION XVI
16-1
REF
DESIG PART NO.
C1201 Capacitor, mica, 330 pf DM15E331J Elmenco
C1202
Capacitor, mica, 100 pf
рМ15Е1017 Elmenco
Elmenco
Capacitor, ceramic disc, 0.01 uf 851Z5U103Z Erie
C1203 Capacitor, mica, 110 pf
РМ15Е111Ј
о
-
N
°
ж
Capacitor, ceramic disc, 0.01 uf B51Z5U103Z
C1205 Capacitor, mica, 620 pf
рМ15Е6217
C1206
C1207 Capacitor, mica, 110 pf ГМ15Е1117 Elmenco
Capacitor, mica, 620 pf рМ15Е6217
Capacitor, ceramic disc, 100 pf 8012501012
Capacitor, mica, 100 pf рМ15Е1017
Capacitor, ceramic disc, 861Z5U102Z
Capacitor, mica, 10 pf DM15E100J Elmenco
C1208
Capacitor, mica, 100 pf DMISEI101J Elmenco
Capacitor, ceramic disc, 100 pf рМ15Е1017 Elmenco
Capacitor, ceramic disc, 0.001 uf 86127501027 Erie
DM15E150J
C1216 Capacitor, mica, 15 pf Elmenco
C1217 DM15E101J Elmenco
L1202 3370-9 CTC
3370-6 CTC
3370-6 CTC
Q1201 Transistor ME216 Amperex
Q1204 Transistor 2N1742
R1201 Resistor, composition, 1K +10%, 1/4 watt
R1202 Resistor, composition, ІК 2109, 1/4 watt У eae
R1203 Resistor, composition, 47 ohms +10%, 1/4 watt wa
R1204 Resistor, composition, 100 ohms 4107, 1/4 watt ET ES
Resistor, composition, 18K %10%, 1/4 watt
Capacitor, mica, 100 pf
L1203
L1204
16-2
—
REF T
DESIG ITEM PART NO. MFR
| R1206 Resistor, composition, 1. BK 4107, 1/4 watt
1 R1207 Resistor, composition, ІК £109», 1/4 watt
Resistor, composition, 10 ohms +10%, 1/4 watt
Resistor, composition, 100 ohms 21095, 1/4 watt
Resistor, composition, 15K %10%, 1/4 watt
Resistor, composition, 220 ohms +10%, 1/4 watt
Resistor, ІК 410%, 1/4 watt
composition,
Resistor, composition, 10 ohms 2109, 1/4 watt
R1214 Resistor,
composition, 100 ohms +10%, 1/4 watt
R1215 Resistor, composition, 10K 4107, 1/4 watt
R1216 Resistor, composition, 2.2K %10%,
1/4 watt
Resistor, composition, 1K +10%, 1/4 watt
100 ohms %10%,
Resistor, composition,
16-1. The megacycle multiplier receives 1 MHZ
Spikes from the spike generator and delivers a 65
MHZ sine wave to high frequency oscillator board
А1604.
16-2. ThelMHZ spike which is rich in harmonics is
appliedto multiplier Q1201. The output circuit of the
1/4 watt
multiplier istunedto the 13th harmonic by coil L1201.
The 13 MHZ signal is amplified by buffer amplifier
Q1202. This stage is tuned to 13 MHZ by coil L1202.
The 13 MHZ signal is applied to multiplier Q1203,
which is tunedto the 5th harmonic by coil L1203. The
65 MHZ signal is amplified by buffer-amplifier Q1203
which is tuned to 65 MHZ by coil L1204.
+9
MIXER
DETECTOR 7
ج ww ЕЕ —+
" #1305 T БІЗ! RI3I4
сїзо! Бізді RI303 | изо! 100 et c1306 Lizoz SRizi2 100 100
T
8-1
Ї ЕЛ
Ч 47K 4.7K 47K л И алк 4
1 1
| Бет | ое» — —ф
C 1304 в 1215
- 130 = оок =
Ci302 Cl309
IF INPUT 1 00!
هم озо! | 01303 I
(8-4 MHZ) ME2I6 ( 9 МЕ217
INPUT C1303
2.6 TO 3.5 4
4-с1308 ЗВІЗІЗ
T 220 100K
=e rs ж E
TO PHASE DET TO SWEEP
(MAIN LOCK) GATE
NOTES:
1. UNLESS OTHERWISE SPECIFIED RESISTOR VALUES ARE IN OHMS + IO % 1/4 WATT.
2. UNLESS OTHERWISE SPECIFIED CAPACITOR VALUES LESS THAN ONE ARE IN MICROFARADS ,
THOSE MORE THAN ONE ARE IN PICOFARADS，
Figure 17-1. Schematic (400 to 500 KC Mixer and Amplifier)
L1302 В1312 81307 С1306 К1308 R1305 С1301 R1303
L1301
Q1302
C1308 C1305
C1307 R | . C1304
C1309 = 2 I mE Е
О R1301
R1309 R1306
R1313 Q1301
R1316
Í R1304
R1311 rw ‚ 2. а
R1317
R1302
C1312
R1314 C1310 CR1301 01304 C1302
Figure 17-2. Component Location (400 to 500 KC Mixer and Amplifier)
SECTION XVII
17-1
DESIG PART МО.
Capacitor, mylar, 0.1 uf
Capacitor, mylar, 0.1 uf
Capacitor, mica, 130 pf
C1305 Capacitor, mica, 820 pf
C1306 Capacitor, mylar, 0.1 uf С280АА/Р100К
С1307 Capacitor, mylar, 0.1 uf C280AA/P100K
Capacitor, mica, 270 pf
Capacitor, ceramic disc, 0.001 uf
Capacitor, ceramic disc, 0,001 uf
Capacitor, mylar, 0.1 uf С280АА/Р100К
Capacitor, mylar, 0.1 uf C280AA/P100K
L1301 Coil
L1302 Coil
Q1301 Transistor
Q1302 Transistor
Transistor
Transistor
Resistor, composition, 47K 4107, 1/4 watt
Resistor, composition, 10K 4100, 1/4 watt
| 1303 | Resistor, composition, 4.7K 4100, 1/4 watt
R1304 Resistor, composition, ІК 4109, 1/4 watt
Resistor, composition, 100 ohms 4109, 1/4 watt
R1306 Resistor, composition, 47 ohms 4107, 1/4 watt
R1307 Resistor, composition, 47K %10%, 1/4 watt
R1308 Resistor, composition, 10K 2109, 1/4 watt
R1309 Resistor, composition, 330 ohms +10%, 1/4 watt
| вз | Resistor, composition, ІК 4107, 1/4 watt
Capacitor, mylar, 0.1 uf C280AA/P100K
C280AA/P100K
C280AA/P100K | Amperex
DM15E131J Elmenco
DM15E821J Elmenco
Elmenco
Amperex
Amperex
Wells
Electronics
387-1300
Wells
Electronics
387-1300
ME216
ME217 Amperex
ME217
17-2
ITEM
1 PART МО.
Resistor, composition, 100 ohms +10%, 1/4 watt
Resistor, composition, 4, 7K +10%, 1/4 watt
2
Resistor, composition, 100K 4100, 1/4 watt
Resistor, composition, 100 ohms %10%, 1/4 watt
Resistor, composition, 100K 4100, 1/4 watt
Resistor, variable, 5K
MTC-1-5K Mallory
Resistor, variable, 10K
MTC-1-10K Mallory
17-1. The mixer and amplifier receives two signals
from 100 KHZ selector A1610 and delivers the 400 to
500 KHZ difference signal to phase detector and sweep
gate A1614. The assembly also furnishes a sweep
gate control voltage.
17-2. A 3to 4 MHZ and a 2.6 to 3.5 MHZ signal are
applied to mixer Q1301 which produces a 400 to 500
KHZ output signal. This signal is applied to the phase
detector through amplifier ©1302 and buffer 01303.
The output circuit of the mixer is tuned by coil L1301
and the output circuit of the amplifier is tuned by coil
L1302. Potentiometer R1316 provides control of out-
put signal level,
17-3. Detector Q1304 produces a dc output with a
level determined by the frequency of the buffer output
signal. Witha signal within the 400 to 500 KHZ range,
amplification is maximum and therefore the output of
the detector is maximum. When the signal out of the
buffer is outside the 400 to 500 KHZ range, the de-
tector dc output voltage willfall below a predetermined
threshold voltage. This threshold voltage is used to
prevent false locks on harmonics of the IF signal or
harmonics of the LFO frequency.
MC TO SWEEP GATE
م = - SELECTOR —— -MM
1 SWITCH Т
! 5 1603
|
! 81604 | RI605 | НІ606 | 81607 | RIGOB | 1609
!
! RES.VALUE 270 1 PLACES (81604-81614)
І —
| RI622
! 47K
| САР VALUE 3-35 pf 6 PLACES (С160!- СІ606) САР, VALUE 1,5-20рҒ 6 PLACES (СІ607- CI6I2) CAP. VALUE 1.5 – 20 pf I2 PLACES (С1613-с1624)
01601 0602 с603 (1604 (1605 0606 6607 свов 609 СВО | СІ! ciel? свз с64 СІ6І5 Cl6I6 CI6I7 СІ618 ГДЕ Cl620 Cl621 C622 CI623 (1624
19194 ШЫ 1 пи +
150 пас 82 вг 68 47 Tas 27 15 по 33 27 27 15
01649 (01650 Cl651 0652 401653 1С1654 01655 人 Cl656 Cl657 Д СІ658 01659, С1660 À С166! ci662
о 1 E) 4 в E) IO " o t 2 3 4 5 6 7 в 9 1 T
L = — = = 一 一 一
TEST POINT TP2
TO зто 4
MC MIXER
20 TO 32 MC IF AMPLIFIER
17 TO 28 MC
OSCILLATOR
ШЕ = Т вв 7 t aL
= тиді T RI4IO 5K T
fate (Етдоз =
7 до n * | RI42I Rl422 ~
| 56K М T зак 39 K |
1
TO 3104 тя: То те
-- * * 一 1 =
MC MIXER Ба I = = = єй POINT
= 01403 саг | смот | сац Gu
TP3 5 7 33 T: + oo, ++ Но
ТЕЗТ мэ 220 RI414 - 01404 INPUT FROM
POINT] HH ses — !20TO32MC
MIXER
сів
= | ı408 0141 6 001
вмог R1409 390 3
22K 80
= вм! CRI407 = RI420 RI423
= 2.2 sc 5 IK 10K
+ ci4i9 R1424
i T 3 цан .001 100 1
сі402 T ¿ — A +9۷
o id
RI4IS ci4i2
|. UNLESS OTHERWISE SPECIFIED RESISTOR VALUES ARE IN OHMS
R1403 SÈ : T 1
100 С =
= C 1403 үр 2, 5
= +01 E RI4IS смт
+9V 0—7 + я ле 220K 2MFO INPUT
R 1404 хас 0 * i o
| 100 13 CYCLE
RI407 3 RI408 = SWEEP
15K 1K -
соб
TEST
230 TP I2
1 ao T 15-30 POINT
с1404 ск4о! E = Ж 2
= 33 У IN273
І тмог
NOTES:
4
ту CRI402
У IN273
+10% 1/4 WATT.
! 2. UNLESS OTHERWISE SPECIFIED CAPACITOR VALUES LESS THAN ONE
ARE ІМ MICROFARADS, THOSE MORE THAN ONE ARE ІМ PICOFARADS.
3, Ж SELECTED VALUE,
RI405 (4 )
INPUT 70 01402
IMC SPIKE Ci405
т са
| d 3 |
=
SHAPER _ _ T PHASE DETECTOR
Figure 18-1. Schematic (Megacycle Selector)
R1423
R1420
C1415
R1424
R1418
R1417
T1402
CR1401
CR1403
R1425
CR1405
CR1402
C1406
C1409
Q1401
Q1402
R1408
R1407
R1406
C1404
C1405
R1405
C1403
К1416 C1420 С1418 ТРІ ©1404 C1416 81421 T1403
R1422
TP2
C1419
TP3
C1410
CR1404
R1412
CR 1406
T1401
C1401
C1408
R1410
C1411
Q1403
R1409
C1407
C1402
R1403
R1402
R1401
С1412
ТР12
R1414 / С1417 | СК1407 | R1411 R1413
C1413 С1414 R1419
Figure 18-2. Component Location (Megacycle Selector)
SECTION XVIII
18-1
ITEM PART NO.
ceramic disc, 0.001 uf 861Z5U102Z
Capacitor,
0.01 uf 851Z5U103Z
Capacitor, ceramic disc,
Capacitor, ceramic disc, 0.01 uf 8512501032
Capacitor, mica, 33 pf DM15E330J
Capacitor, ceramic disc, 0.001 uf 851Z5U102Z Erie
Capacitor, mica, 330 pf DM15E331J Elmenco
Capacitor, mica, 33 pf N750 TCI -33 Centralab
Capacitor, mica, 390 рі DM15E391J Elmenco
Capacitor, mica, 100 pf DMI15E101J Elmenco
рМ15Е1017 Elmenco
Capacitor, mica, 100 pf
Capacitor, mica, 430 pf рМ15Е4317 Elmenco
C1413
C1414
C1417 Capacitor, electrolytic, 2uf
C1418 Capacitor, ceramic disc, 0.001 uf
Erie
C1419 Capacitor, ceramic disc, 0.001 uf 8612501032 Erie
C1420 Capacitor, ceramic disc, 0.001 uf 8612501032
C1421 Capacitor, mica, 15 pf рМ15Е1507
Capacitor, ceramic disc, 0.01 uf 851Z5U103Z Erie
Capacitor, ceramic disc, 0.01 uf 851Z5U103Z
Capacitor, ceramic disc, 0.001 uf 85125171022
Capacitor, ceramic disc, 0.01 uf 8512501032
Capacitor, mica, 15 pf рМ15Е1507
Р65АС10250М
861Z5U102Z
CR1403
thru
CR1406
18-2
PART NO.
Transistor 2N1742
Resistor, composition, 56K +10%, 1/4 watt
Resistor, composition, 22K %10%, 1/4 watt
R1403
R1404
R1405
Resistor,
composition, 100 ohms 2109, 1/4 watt
Resistor, composition, 100 ohms 4109, 1/4 watt
Resistor, composition, 470 ohms 41079), 1/4 watt
Resistor, composition, ІК +10%, 1/4 watt
Resistor, composition, 15K 4109, 1/4 watt
Resistor, composition, ІК 4100, 1/4 watt
Resistor, composition, 680 ohms 4100, 1/4 watt
Resistor, composition, 10K 4100, 1/4 watt *selected value
Resistor, composition, 2.2K +10%, 1/4 watt
Resistor, composition, 10 ohms %10%, 1/4 watt
Resistor, composition, 10K 4100, 1/4 watt
Resistor, composition, 4.7 %10%, 1/4 watt
Resistor, composition, 2.2K +10%, 1/4 watt
MTC-1-5K Mallory
MTC-1-5K Mallory
Resistor, variable, 5K
Resistor, variable, 5K
Resistor, composition, 100 ohms 4107, 1/4 watt
R1420
R1421
T1402
T1403
Resistor, composition, 220К %10%, 1/4 watt
Resistor, composition, ІК 4107, 1/4 watt
Resistor, composition, 3.3K 2100, 1/4 watt
Resistor, composition, 39K 4107, 1/4 watt
Resistor, composition, 10K 4109, 1/4 watt
Resistor, composition, 100 ohms 4100, 1/4 watt
Resistor, composition, 220K +10%, 1/4 watt
Transformer
Transformer
Transformer Singer
119437-11 Ucinite
Test Point
18-1. The megacycle selector receives a 20 to 32
MHZ signal from mixer Q1003 and а 1 MHZ spike from
the spike generator. The selector delivers two sig-
nals with a difference frequency between 3 and 4 MHZ,
to mixer Q1501 of 100 KHZ selector A1610.
18-2, The 20 to 32 MHZ signal from mixer Q1003 is
amplified by IF amplifier Q1404. The output circuit
is tuned by transformer T1403 and by selection of
capacitors. MHZ selector switch S1603 selects a
trimming capacitor tuned for maximum response
within a one megacycle range.
18-3. Oscillator Q1403 is tuned to approximate fre-
quency by selection of capacitors (C1613 through
C1624) and to an exact multiple of 1 megacycle by the
phase detector. The oscillator supplies a 17 to 28
MHZ signal to the 3 to 4 megacycle mixer and to the
diode bridge of the phase detector.
18-4. The shaper Q1401 and Q1402 receives a 1 MHZ
spike from the spike generator and supplies a gate
pulse with a very narrow pulse width to the diode
bridge. As in the shaper of the spike generator (see
Section 10), the back-to- back transistors provide posi-
tive feedback and therefore sharp rise and fall charac-
teristics. The pulse is applied to the diode bridge
through transformer T1402.
18-5. When the gate pulse is applied to the bridge,
the four diodes conduct and apply a portion of the os-
cillator signal to reactance diode CR1407. This por-
tion is filtered by capacitors C1413 and C1414 and is
a dc voltage. As shown in figure 18-3, the dc output
levelis determined by the phase relations between the
gate pulse and the oscillator signal. If the local os-
cillator drifts, the phase relations change and pro-
duce a change in dc output. The change in dc output
changes the effective capacitance of the reactance di-
ode and automatically corrects the frequency drift.
18-6. This type of bridge has a very narrow lock
range. To assist the circuit in locating a lock volt-
age, athree cycle sweep voltage from sweep generator
Q301 and Q302 is applied to diode CR1407. Before
lockis achieved, this three cycle signal is effectively
adc sweep voltage which sweeps the oscillator over a
broad frequency range. Once lock is achieved, the
circuit compensates for the dc change and effectively
cancels the sweep action.
18-7. Resistors R1416, R1417, and R1418 are part of
the voltage divider networkforthefinalphase detector.
The network supplies a dc reference voltage to the
detector.
GATE PULSE | |
LOCK POSITI ON
LOW FREQUENCY
OSCILLATOR
- 01403
SIGNAL
DC OUTPUT LEVEL
Figure 18-3. Phase Lock Bridge Waveforms
18-3
W ha nt. лат
и бал his гт ба ж
44 Ч T nm L (ий e re шэг А С» й
МА 90 ш % YA va Да " 8! E
a ч TES Ф 1178 AUAM 15) й
| | j TUE | үен Ma ЯАМ
B E ON HRS ТАРТ УТ ИТ па ya кума (сенен
| | | | š Я Ж” ТЕА УТИ
ТЬ ғ A Ў ЖГ А "(P ND Ч: + t
y VIA 0 [ 1 у us + t ç аж В 4 4
n | T [4s ^ Ji. | сәттен . ғ ї ДЭР
i Hj p - М y =
NOT А “н io а 1 D en
КА А
# П A
! D
| Ї “)! 1 WAT 4 |
"n і n s 44 Л
IN I,
4 ut
ZN і k \ л, “
ПЕ 24
Y + - ANTO
! Л | 4
| 7 2 ya? й
Ра N
3
у |
77
oM AAT f -
To. nm
и М i
TU |
1
1 n А 2 ї
D ( dh 3
n л № 4
1 и S.
і р Aur
Ú D Ги
' pa М | | пи
4 VN
D^ | ла
1 СУ, К I Үй
Н {
! EL 1 m
Ч a РУ 4 y
T ibt: г, 11,
l uh | ' a» 4 ! Р” 1 Г К A" 1 : гу
1
Ч? 4 үш 7 We 85 2 1 L
7 ў р ү lu ж ¥ ча T рч ма 1
v (4) | í
| i 4! "Ч КЗ ТТ |
4 ї й М Ст?
ji yA 27 Мн "Lua m мн й Ww ЛА nu UEM e
ҮЗҮҮЛЭХ қа башқ Ё
ТИШ A
Ty M
IOOKC
SELECTOR} —
SWITCH | Ж
51604
4
:
2
(634
5 TO 20 pf 10 PLACES
120 ча 4 15-716 om. Vis
өз зб" ач 09 от "9 "t 9
сл ca с са с/ си c^| c с
5 (1626 (1627 1628 |629 [163011631 (1652 1633
T
+9v °
3-4МС IF AMPLIFIER |
= +
RI52!
56K
RISI7
47K
33
UG QE
We zi icis
N 802 ke
)
RI525
100
С1523
ІК
INPUT 01501 51559 001
20-32 MC 4 4 T + 6)
INPUT
17-28 MC La asss sa |
RI507 Rios | cisio 9154 151502 [ cisis RISIB RI523
IOK ік 130 IK иЕлошн T зо ок 470
TEST POINT її
TP3 ot 4 Pi
RI504 Ще
10 -
+ 9у о-- =
BLOCKING PHASE 2.6 TO 3.5 MC
OSCILLATOR DETECTOR OSCILLATOR
+ +
81522
100, 100 с1519 #1526
го 22k
RISIS RISIS
47 ATK
0157 =e
100 KC
INPUT 20 SS.
FROM
DIVIDER CRISO! V, CRISO *
к сі520
FOUR
IN273 5 Есе
—
CRI503 SN7CRI504
-- فم
INPUT
EEE 81520 Leise 1 C152! RI524 | CI524 < 81527
с1516 47K T.o0! 820 3.3K T .о Š 56K
тре © 560
TEST POINT
4 + >
TEST POINT
TP4
| „то 400-500 кс
MIXER
TEST POINT
о
TP5
TO 400-500КС
MIXER
uH
Figure 19-1.
Schematic (100 KHZ Selector)
NOTES:
І, UNLESS OTHERWISE SPECIFIED
RESISTOR VALUES ARE IN OHMS
EIO% 1/4 WATT.
. UNLESS OTHERWISE SPECIFIED
CAPACITOR VALUES LESS THAN
ONE ARE IN MICROFARADS,THOSE
MORE THAN ONE ARE IN PICO-
FARADS.
3. 3k PROGRESSIVELY SHORTING
CONTACTS.
4 А NOMINAL VALUE.
го
ТР6 Q1502 81505 С1506 T1501 C1504 С1511
R1526
C1524
G1517
TP5
CR1505
T1503
R1522
C1519
R1523
С1514
01503
R1517
R1518
R1525
TP4
T1502
C1523
C1522
R1521 C1509 C1515 | C1508 | 11501 01501
C1510 81501
Figure 19-2. Component Location (100KC Selector)
C1505
R1510
С1512
R1512
C1513
R1515
CR1503
CR1501
CR1502
R1516
R1513
CR1504
R1511
C1507
C1518
C1516
R1514
L1502
R1502
C1502
TP3
C1501
R1506
R1503
R1509
R1504
C1503
R1507
R1508
SECTION XIX
19-1
REF
DESIG ITEM PART NO.
Capacitor, ceramic disc, 0.01 uf 851Z5U103Z
Capacitor, ceramic disc, 0.001 uf 861Z5U102Z
Capacitor, ceramic disc, 0.01 uf 861Z5U103Z
C1504
Capacitor, ceramic disc, 0.01 uf 851Z5U103Z Erie
C1505 рМ15Е5017 Elmenco
Elmenco
Amperex
Capacitor, mica, 500 pf
C1506 Capacitor, mica, 220 pf DM15E221J
C1507 Capacitor, mylar, 0.1 uf С280АА/Р100К
С1508 Capacitor, mica, 39 pf DM15E390J Elmenco
C1509
Capacitor, mica, 27 pf рм 15Е2707Ј Elmenco
C1510
Capacitor, mica, 130 pf рМ15Е1317 Elmenco
C1511
Capacitor, ceramic disc, 0.01 uf 8512501032, Erie
Capacitor, ceramic disc, 0.001 uf 8612501022,
Capacitor, mica, 130 pf
Capacitor, mica, 560 pf
C1515 рМ15Е1317 Elmenco
С1516 рМ15Е5617 Elmenco
C1517 Capacitor, mica, 220 pf DM15E221J
C1518 Capacitor, ceramic disc, 0.001 uf 861Z5U102Z
C1519 Capacitor, ceramic disc, 0.01 uf MR330-.01 Paktron
C1520 Capacitor, mica, 33 pf, N750 TCN-33 Centralab
DM15E821J Elmenco
C1521 Capacitor, mica, 820 pf
DM15E330J Elmenco
C1522 Capacitor, mica, 33 pf
C1523 Capacitor, ceramic disc, 0.01 uf 851Z5U103Z Erie
C1524 Capacitor, ceramic disc, 0.01 uf 861Z5U103Z
CR1501
thru
CR1504
CR1505
Diode, voltage sensitive 562
231742
Transistor, ME216 Amperex
ne | сон, 10 wh TOF IO5A1
Q1502 Transistor
19-2
ITEM
PART NO.
MFR
Resistor, composition,
100 ohms +10%, 1/4 watt
Resistor, composition,
33 ohms +10%, 1/4 watt
Resistor, composition,
27 ohms %10%, 1/4 watt
Resistor, composition,
10 ohms %10%, 1/4 watt
Resistor, composition,
270 ohms %10%, 1/4 watt
Resistor, composition,
10K +10%, 1/4 watt
Resistor, composition,
10K +10%, 1/4 watt
В1508 Resistor, composition, ІК %10%, 1/4 watt
R1509 Resistor, composition, ІК 4100, 1/4 watt
R1510 Resistor, composition, 27 ohms +10%, 1/4 watt
Resistor, composition,
2.2 meg +10%, 1/4 watt
R1511
R1512
R1513
R1514
Resistor, composition,
Resistor, composition,
100 ohms %10%, 1/4 watt
220K +10%, 1/4 watt
Resistor, composition,
R1515
R1516
Resistor, composition,
Resistor, composition,
1K %10%, 1/4 watt
47 ohms %10%, 1/4 watt
10K +10%, 1/4 watt
Resistor, composition,
атк +10%, 1/4 watt
Resistor, composition,
10K %10%, 1/4 watt
Resistor, composition,
Resistor, composition,
Resistor, composition,
Resistor, composition,
Resistor, composition,
4.7K %10%, 1/4 watt
15K £10%, 1/4 watt
5.6K +10%, 1/4 май
470 ohms %10%, 1/4 watt
3.3K +10%, 1/4 watt
100 ohms +10%, 1/4 watt
Resistor, composition,
Resistor, composition,
22K £109, 1/4 watt
ІШІП ІШІ
5.6K +10%, 1/4 watt
Transformer
Transformer
Transformer
PIP-2
UTC
EP74
EP75
Jack
119437-11
Singer
Singer
Amperex
19-1. The 100 KHZ selector receives two signals
from megacycle selector А1607 and a 100 KHZ signal
from frequency divider A1612. The selector delivers
two signals with a difference frequency between 400
and 500 KHZ to mixer Q1301 of 400 to 500 KHZ mixer
and amplifier A1613.
19-2. A 20 to 32 MHZ and 17 to 28 MHZ signal are
applied to mixer Q1501 which produces a 3 to 4 MHZ
output signal. The output circuit of the mixer is tuned
to provide a 1 megacycle band pass. The 3 to 4 MHZ
signalis amplified by amplifier Q1503 and delivered to
the 400 to 500 KHZ mixer. 100 KHZ selector switch
51604 selects a trimming capacitor tuned for maxi-
mum response within a 100 KHZ range.
19-3. Oscillator Q1504 is tuned to approximate fre-
quency by selection of capacitors (C1635 through C 1644)
and to an exact multiple of 100 KHZ by the phase de-
tector. Theoscillator supplies a 2.6 to 3.5 MHZ sig-
nal to the 400 to 500 KHZ mixer.
19-4. The phase detector operates inthe same manner
as the phase detector in the megacycle selector (see
Section 18). Тһе detector receives а 100 KHZ gate
pulse from frequency divider A1612. The 100 KHZ
pulse is shaped by blocking oscillator Q1502.
19-3
Е P "on
b od Te
айю w к Ne гай
Чи (
Үл у И ! Ут
M І [ 121 «А 7 БООМ үй
OY I
i
j
D VM і В
P ишиг К Р =
| ui
И. D LA
v D (1 f n ç | í
і
У і 7 »
›
А
|
»
Л
dn
ку “Ж -
р
ies |
01 й H
У |
MODEL RFA-20
RF ATTENUATOR
The Model RFA-20 is a 20db attenuator, designed for use with the Gertsch
ЕМ-9 frequency meter.
The RFA-20 must be used with the FM-9 to provide accurate output levels
in the .5 to 5uv range. This output range is obtained by operating with the
FM-9 "RF Output" switch in the 50uv position. The vernier control, "96 RF
Output", will then vary the output from .5 to Suv (5 to 50uv divided by 10).
In addition to providing a 10 to 1 voltage reduction of the FM-9 output,
the RFA-20 protects the frequency meter from damage due to accidental keying
of transceivers.
Accidental keying of the transmitter, when directly connected to the FM-9
through the RFA-20, may result in a significant change in the impedance or
attenuation of the RFA-20. A set of spare resistors is provided with the unit,
should this occur.
The replacement resistors are mounted as shown in the exploded view below.
Particular attention must be given to the dimensions shown.
R2
Jl 240 J2
> е)
Parts List
el Connector, UG-261/U
J2 Connector, Gremar 11274
R1 Resistor, composition, 62 ohms +5%, 1/4 w
R2 Resistor, composition, 240 ohms +5%, 1/4 Ww
R3 Resistor, composition, 62 ohms £596, 1/4 w
THE SINGER COMPANY
METRICS ЧОЛ PS CO IND) охсон а m precem a
Design and production of PANORAMIC • SENSITIVE RESEARCH + EMPIRE + GERTSCH instruments for measurement
Lertsch
s Ж ot hl $ ЫГ хонх ХХ Ч
Ж " wi ^ e iat 98 та n
ТІМ ML A DNI bu YA ht ug льні Қа "i ae
ГУ ма К N у ) АС
td | Ped Z: 177 A, TO эшет md чи | Йа,
| | | | EM Dt 7% кезін сш
| А р Y I E | | 5 И і » | | у Anm
1 Ç * р M у | I TOUR ^ i A Е л М "i 1,7 D
pi ЮЛИЯ RU wi еч Ки
TN і (1 "n ! "Wi, IN їм Чин ый. o LU Ку eae M oe BS LU ^ I Art
ү | | аралаша” E )
| Qi YA Уй ГА ИА ме О, 2) две өне A бий! hari 21 ніс 15277 ві № 4
{ ; | | , | №, T | | ant іш о клік; (2
25 M | Қ. у NW 5 бека
I [AT 1 1 к "Va
1 V af ЭЭЛ Л didi іні ра ҮҮ дэл de (i Am. T Ши TI май
| a Қо 22777 х INT il fr M d "m "M ЯС ы | 4 р Ме
1 W I | š
|
үкү
22 (0
bertseh
Model RFA-60 RF Attenuator
The Model RFA-60 is a 60 db attenuator which allows keying of a
transmitter when directly coupled to the Model FM-9 Frequency
Meter.
Connect the attenuator into the test circuit as follows:
1. Connect the cable end (BNC connector) of
the attenuator directly to the INPUT/OUTPUT
connector of the Model FM-9.
Connect the transmitter/receiver to one of the
UHF connectors of the tee.
The remaining UHF connector of the tee is for
connection of a dummy load or an antenna.
The 60 db (1000:1 voltage) attenuation applies in the fundamental 150
to 162 MC range only.
Receiver sensitivity checks may be made with the above test circuit,
however, allowance must be made for the 1000:1 attenuation. Use
the 5mv scale of the Model FM-9 to obtain a .5uv output.
Jy] THE SINGER COMPANY
087507 | METRICS DIVISION zit
Design and production of PANORAMIC + SENSITIVE RESEARCH + EMPIRE » GERTSCH instruments for measurement
Ru yy
M
ЖА
006:
LOMB ИР Pear “ч! р | л WV ND.
Е А 112408 147 ) м ГТ КЫ е Е " 1
1 | 4 FP Pos J 0 } j j COUTE | 4 иа НЭГ N pu | mum ки
А S 13 hs 1 1 у M D t
m
=
“2
2227 Вейи dor iun