Document text
KENWOOD
25 watts 45 watts
Mobile Transceiver TM-2530A/ 2550A/
au
{ oo
ivi
M-2530A/2550A/2570A
2m FM Mobile Transceiver
The KENWOOD’ TM-2530A/TM-2550A/TM-2570A 2 meter FM Mobile
transceivers have been designed to satisfy the needs of the most demanding
2 m mobile operator. A wide range of innovative features have been
incorporated in the basic design, including a large, new, easy-to-read LCD
display, 23 multi-function memory channels for storing frequency, offset,
telephone number and sub-tone (sub-tone unit optional), auto-offset,
programmable priority, memory and band scans, automatic center-stop
tuning, and Hi/Lo power selection. The new “25-Series” offers 2m FM mobile
transceivers in three power output versions: TM-2530A, 25 W output,
TM-2550A, 45 W output, or the TM-2570A, a 70 W industry first by
KENWOOD!
An optional MU-1 DCL (Digital Channel Link) unit provides a revolutionary
new signalling capability, giving the operator maximum flexibility and
efficiency in his normal, day-to-day contacts, or in high speed net
operations. Easy-to-operate front panel controls provide the final touch,
making this new 2m series easily the last word in state-of-the-art technology.
<FEATURES >
70 W, 45 W, and 25 W RF Output
Versions.
The use of automatic final amplifier
protection circuitry in conjunction with a high
reliability RF power amplifier stage makes
possible three model versions, each having a
different maximum power output: TM-2570A
at 70 W, TM-2550A at 45 W, and TM-2530A
at 25 W. A Hi/Lo power switch allows
operation at the high output, or at a more
conservative level of 5 watts when higher
power is not needed.
Optional MU-1 DCL “Digital
Channel Link System” Unit.
DCL is a revolutionary new signalling system
developed by KENWOOD for Amateur radio,
that utilizes the most advanced digital data
transmission technology. Its features include
automatic connection, recall, vacant
frequency location, reverse function, and
selective calling of individual transceivers or
groups of transceivers.
By utilizing a 5 digit code group, 100,000
combinations are possible, thus providing a
high level of code security. In addition to the
selective calling code, the DCL system also
transmits a maximum 6 digit alpha numeric
group, which is normally used for the station
call sign, e.g. WD6DUJY, or JA1YKX. The call
sign is inserted using decimal ASCII code. By
using the optional CD-10 call sign display,
which can be used with any receiver, the
operator may store up to 20 incoming call
signs for later review or logging. Installation
inside the cabinet is simple and easy.
New Large, Easy-to-read LCD
Display.
A green, multi-function, back-lighted
semi-penetration type LCD display is
provided, for best visibility in direct sunlight
or after dark. It indicates frequency, digital
code, call sign code, tone frequency,
telephone numbers, memory channel
number, repeater offset (+, s, —), S/RF meter,
CENTER TUNING, PRIORITY, REVERSE,
CHL, SCAN, and TELEPHONE.
New, Easy-to-operate, Illuminated
Keys.
A functionally designed control panel
features expanded convenience and ease of
operation during night-time use, through
backlighted, individually illuminated keys.
23 Multi-function Memory
Channels.
23 memory channels allow storage of
frequency, repeater offset, telephone
numbers, and sub-tone frequencies (TU-7
sub-tone unit optional), providing quick and
easy access during mobile operations. The
priority channel can be programmed from
any of the memory channels. With the
optional TU-7 38 channel sub-tone unit ~
installed, sub-tone information can be stored
in any of the memory channels. Memories 1
through 15 may be operated simplex or
+600 kHz offset. Memory pairs 16/17 and
18/19 are paired for non-standard repeater
offset, allowing easy selection of transmit
and receive frequencies. Memory “A” is an
operator selected reference frequency for
the automatic connection function to use in
finding a vacant channel during DCL
operations. Any channel frequency stored in
memory “b” will be skipped while operating
in automatic connection mode during DCL
operations. Memories “U” and “d” establish
the upper and lower limits for programmable
band scan, but they may also be used in the
same manner as memories 1 through 15.
When the “M.CH” (memory channel) key is
depressed, a circle of light appears around
the memory channel selector knob. When
the “M.CH” key is in the “off” position, the
circle of light will be extinguished. An audible
“beep” will sound when the memory channel
selector control Knob is rotated in either
direction to the channel 1 position.
15 “Telephone Number” Memory
Channels.
Channels 1 through 15 may be used to store
up to 15 7-digit telephone numbers, entered
using the front panel keyboard. Depressing
the telephone key during transmission
causes the selected telephone number to be
automatically transmitted.
144MHz FM TRANSCEIVER
144MHz FM TRANSCEIVER
Pre-programmed Automatic Offset.
The built-in microprocessor is
pre-programmed for simplex or +600 kHz
offset in accordance with the 2 meter band
plan, allowing easy operation on the selected
frequencies. A manual change in the offset
frequency is easily accomplished through
use of the “OS” key on the keyboard, and a
temporary change in the offset frequency as
stored in the memory may also be
programmed using this key.
145.5 146.4 147.0 147.6MHz
(LET -E BE)
146.0 1466 147.4 148.0
Center Stop During Programmable
Band Scan, with Indicator.
During band scan, scanning action will stop
in the center of the selected channel (5 KHz
step), making it easy to operate on the
correct frequency without the need for
programming the scan steps. The CENTER
TUNING indicator verifies reception in the
Telephone Number” Memory
nnels.
nels 1 through 15 may be used to store
15 7-digit telephone numbers, entered
the front panel keyboard. Depressing
lephone key during transmission
2s the selected telephone number to be
natically transmitted.
144MHz FM TRANSCEIVER
144MHz FM TRANSCEIVER
programmed Automatic Offset.
uilt-in microprocessor is
rogrammed for simplex or +600 kHz
in accordance with the 2 meter band
allowing easy operation on the selected
=ncies. A manual change in the offset
2ncy is easily accomplished through
‘the “OS” key on the keyboard, and a
rary Change in the offset frequency as
| in the memory may also be
ammed using this key.
145.5 1464 147.0 147.6MHz
an- is -i-1F-|
146.0 146.6 147.4 148.0
er Stop During Programmable
| Scan, with Indicator.
} band scan, scanning action will stop
Senter of the selected channel (5 kHz
making it easy to operate on the
t frequency without the need for
mming the scan steps. The CENTER
|G indicator verifies reception in the
Indicator section
—,S, + = offset/T = tone indicator
SCAN = SCAN indicator
Frequency, digital code and call sign (ASCII code)
Telephone indicator/S/RF level meter
Memory channel display indicator
* mark: memory channel scan lock-out designator
C.TUN: CENTER TUNING indicator PRIORITY switch
PRIO: PRIORITY indicator Recalls the priority channel.
REV: REVERSE indicator ALERT switch
CHL: CHL indicator
REV (reverse) switch
Reverses the repeater shift (+600 kHz) and other transmit/
receive frequencies (CH-16~17, 18~19).
LAMP switch
HI/LO switch
Selects full or low
output power
Checks the specified priority channel.
= NMG)
SCAN switch (=: CO HL TO)
TO (Time Operated):
Scanning stops on channels which are busy, then scanning is
resumed after 5~6 seconds (adjustable O~5 seconds)
CO (Carrier Operated):
_ aa
= ea
MIC connector (8 pin)
Scanning stops on channels which are busy, then resumes when
the channel becomes open.
channel center during all operations, such as
scan, memory, or keyboard frequency
selection.
Memory Scan and Programmable
Band Scan Resume Selection.
During memory scan or band scan, scanning
may be programmed to stop automatically
on a busy channel. When the scan mode
switch is in the “TO” (Time Operated
Resume) position and a busy channel is
encountered, scanning will stop on the
channel, hold for approximately 5 seconds,
and then resume scanning. When the scan
mode switch is in the “CO” (Carrier Operated
Resume) position, scanning will stop on the
busy channel and will resume immediately
when the signal ceases. In either case, “TO”
or “CO”, a scan delay circuit (approximately
1.5 seconds) prevents unexpected scan
resume in the event of signal fading, or
during “no-signal” intervals typical of normal
transmit-receive operations.
(a) Memory Scan plus Programmable
Memory Channel Lock-Out.
Scans only those channels in which
frequency data is stored. The “LO” key
allows programming of memory scan to
skip selected memory channels during
scan without loss of data previously
stored in that channel. A star lights on the
display, indicating that the specific
channel is in the LOCK-OUT mode of
memory scan. To reinstate the channel to
the IN-SCAN mode, simply depress the
“LO” key a second time, after manually
tuning to the locked-out channel.
(b) Programmable Band Scan.
Utilizing memories “U” and “d”, the upper
and lower limits of the band of
frequencies to be scanned may be set,
allowing maximum efficiency in band
scanning.
(c) Programmable Priority Alert.
The “PRIORITY” channel may be
programmed from any of the 23 memory
channels, by depressing the “PS” key on
the keyboard. Specially designed
circuitry assures shorter sampling
intervals with minimum switching noise.
With the “ALERT” switch “on”, the unit
scans back to the programmed priority
channel once every 6 seconds for
approximately 0.3 seconds, to check for
activity. A dual “beep” will sound if the
Channel is active. Depressing the “PRIO”
(priority) switch causes operation to be
immediately transferred to the priority
channel.
Programmable Sub-tone Channels.
The internal installation of the optional TU-7
sub-tone unit provides 38 keyboard
selectable sub-tone frequencies. A selected
sub-tone frequency may be stored in any of
the memory channels. Pressing the “TONE”
switch causes the LCD display to indicate
TONE OFF, (FO), or the tone frequency of
the selected sub-tone channel. 38 tone
frequencies beginning with 67.0 Hz through
250.3 Hz may be programmed.
Built-in 16-Key Autopatch, with
Audible Monitor Circuit.
The front panel keyboard functions as a
16-key autopatch encoder during
transmission. 16-key operation is indicated
by DTMF speaker output when a key is
pressed while transmitting.
Lithium Battery Memory Back-up.
An internal lithium battery memory back-up
prevents loss of memory data when the radio
is disconnected from its main power source,
as when the radio is being moved to or from
the automobile and/or the hamshack.
Front-Panel Keyboard Operation.
A convenient front-panel keyboard is used
for selecting frequency, offset, programming
memories, controlling scan functions, and
selecting autopatch encoder tones.
Extended Frequency Coverage.
Covers 142—149 MHz in 5 kHz steps,
allowing simplex and repeater operation on
many MARS and CAP frequencies.
CS (Code Set) key
C.SQ (Code Squelch) key
Offset Select key Selects frequency shift.
Clear key
Clears frequency selection and cancels scan function.
Number keys
Selects frequency, also selects DTMF tones on transmit.
Memory key
Stores displayed frequency in selected memory.
144MHz FM TRANSCEIVER
RESET SCHL m@ODCL
CHL (Channel Link) key
RESET key
Frequency range also expendable for
coverage 141-151 MHz.
Specifications are guaranteed for the 144-148 MHz
Amateur band only.
Repeater Reverse Switch.
The repeater reverse switch transposes the
receive and transmit frequencies for
checking signals on the input of a repeater, if
the other station is within simplex range, or if
a repeater is “upside down”.
High Performance
Receive/Transmit Specifications.
The extra high receive sensitivity and
excellent dynamic range provided by the use
of GaAs FETs in the RF amplifier, plus
KENWOOD's special high-speed antenna
switching circuit, coupled with transmitter
modulation characteristics that have been
carefully selected for superior sound quality
and minimum distortion, result in an
outstanding KENWOOD 2 meter radio series
having the highest in receive/transmit
specifications.
“BEEPER” Amplified Through
Audio Circuit.
The operation of the various functions is
confirmed by the sounding of distinct
“peeper’ tones. With the front panel volume
control set at your usual operating position,
the audio output level of these tones may be
adjusted to a comfortable level, through use
of an internally located variable resistor.
Microphone Test Function.
With the Hi/Lo power switch in the low power
position, the RF bar meter reading varies with
relative modulation, verifying output from the
microphone. Microphone output level may
be adjusted using a variable resistor
mounted internally.
Low Power Output Level
Adjustment.
An internally mounted variable resistor is
provided for adjusting the power output for
“LO” power operations.
VOLUME control/
POWER switch
DCL (Digital Channel Link) key
Priority Select key
Memory Channel Lock-Out key
Allows programming of memory scan to skip
selected memory channels during memory scan.
Scan key
Activates automatic band or memory scan,
according to position of key memory select switch.
M. CH (memory channel) switch
———s Selects keyboard operation or memory
CH channel operation.
LOCK (frequency lock) switch
RX INTER MODULATION
MODEL. TM-2570A
C FREEQ.: 145.960 100[uV]S/N' 57.5
TEMP. 25(C] LOAD IMP..8
RX S/N, SINAD VS ANT INPUT VOLTAGE
100 [uV] SINAD: 39.1 N. LEVEL: -2.8
OUTPUT RESPONSE [dB]
o
ANTENNA INPUT VOLTAGE [yV)
MEMORY channel and
TONE FREQUENCY selector
——
RX SELECTIVITY (2 SIGNAL)
Selects the desired memory channel.
There are 23 memory channels.
MODEL. TM-25
ser WEATHER: FINE
7OA TEMP: 26.7C
+30.60 kHz: 66.4 dBy
C.FRQ: 145.960
20 dB NO: —-6.4dBy
—30.60 kHs 665 0By
VOICE switch
Announces the frequency, memory
PHONE TONE VOICE
channel number, digital code, tone
frequency and telephone number.
Ry — Tone switch
40 +
Selects the desired tone frequency.
PHONE switch
Selects the telephone address number
UNDESIRED SIGNAL INPUT LEVEL IN dBu (60 kHz)
MODEL. TM-2550A
30f- WEATHER: FINE
UNDESIRED SIGNAL INPUT LEVEL IN dBy (30 kHz)
and programs or recalls the desired
telephone number.
SQUELCH
Eliminates noise during no-signal periods.
Rugged Die-cast heatsink, and an internally mounted
cooling fan (TM-2570A).
The 70 W final amplifier stage of the TM-2570A is mounted directly
on its die-cast heatsink, for maximum thermal conduction
efficiency, and an internally mounted cooling fan further assures
efficient operation within the design parameters of the final
amplifier device.
Frequency Lock Switch.
A front panel “F. LOCK” switch prevents accidental loss of selected
frequency when in the “LOCK” position.
Optional VS-1 Voice Synthesizer Unit.
An optional VS-1 Voice Synthesizer unit is available, which
announces the frequency, memory channel number, digital code,
tone frequency, and telephone number.
Easy-to-Install Mobile Mount.
Mic amplifier
Optional
VS-1 “Voice
Synthesizer
Unit”
AVR and AF
power
amplifier
Receive P
circuit
Optional
M
“M
ODEM unit
for DCL”
UNDESIRED SIGNAL INPUT LEVEL INdBy
CPU x2
vCcoO x2
TEMP: 28.6C
CRO: 145.9600MHz —30kHz:775dBy |
20 dB NO: —7.20By
+30 kHz: 76.5 0B,
st
60 80 100 120 +140 30 40
Compact, Lightweight Design.
—20
FREQUENCY DIFFERENCE IN kHz
The TM-2530A measures only 180 (7.09) W x60 (2.36) H x 195
(7.68) D mm (inch), weighs 1.8 (3.97) kg (Ib.).
The TM-2550A measures only 180 (7.09) W x60 (2.36) H x 215
(8.46) D mm (inch), weighs 2.0 (4.41) kg (Ib.).
The TM-2570A measures only 180 (7.09) W x 60 (2.36) H x 250
(9.84) D mm (inch), weighs 2.35 (5.18) kg (Ib.).
Standard Accessories (supplied)
@ Operating manual
@ Hand microphone
e@ DC cable with fuse
@ Mobile mounting bracket
@ Microphone hanger
Service Manual
Complete service manual for TM-2530A/2550A/2570A is available
through KENWOOD authorized dealers of Parts Department of
TRIO-KENWOOD COMMUNICATIONS.
TM-2570A 2mFM Mobile Transceiver (70 W)
Control unit
Optional TU-7
“38 tone
cTcss
encoder”
PLL unit
Final unit
(General)
Frequency Range: 144~148 MHz
Mode: FM (F3, F2 = with DCL function)
Power Requirement: 13.8 VDC +15%
| Grounding: Negative
Current Drain:
TM-2530A | TM-2550A | TM-2570A
HI transmit power 9.5A 16A
| Receive mode
(no signal) 0.60 0.8A
Antenna Impedance: 50
Microphone impedance: 500~600
External Speaker: 8
Dimensions & Weight:
TM-2530A TM-2550A TM-2570A
W mm (inch) 180 (7.09) 180 (7.09) 180 (7.08)
H mm (inch) 60 (2.36) 60 (2.36) 60 (2.36)
D mm (inch) 195 (7.68) 215 (8.46) 250 (9.84)
Weight kg (Ibs.) 1.8 (3.97) 2.0 (4.41) 2.35 (5.18)
*Projections not included
| Specifications are subject to change without notice.
TM-2530A/2550A/2570A SPECIFICATIONS
(Transmitter)
RF Output Power:
| TM-2530A | TM-2550A | TM-2570A
HI | 25W 45 W 70W
LOW
5W approx.
Modulation:
Spurious Radiation:
Maximum Frequency
Deviation:
Modulation Distortion:
Frequency Stability:
(Receiver)
Circuitry:
Intermediate Frequency:
Sensitivity:
Selectivity:
Spurious Response:
Squelch Sensitivity:
Scan Stop Level:
Audio Output Power:
Reactance Modulation
Better than 60 dB
+5 kHz
Less than 3% (300~3000 Hz)
Better than +15 PPM
(—20°C ~+50°C)
Double Conversion Superheterodyne
1st IF = 10,695 MHz
2nd IF = 455 kHz
12 dB SINAD less than 0.25 nV
More than 12 kHz (—6 dB)
Less than 25 kHz (—60 dB)
Better than 70 dB (except IF/2)
Less than 0.125 wV
Less than 0.2 w
More than 1.5 W (at 8 Q load 5%
distortion)
851020 (@) B Printed in Japan
TRIO-KENWOOD CORPORATION
Shionogi Shibuya Building, 17-5, 2-chome Shibuya, Shibuya-ku, Tokyo 150, Japan
TRIO-KENWOOD COMMUNICATIONS
1111 West Walnut Street, Compton, California 90220, U.S.A.
TRIO-KENWOOD (AUSTRALIA) PTY. LTD. (iNcoRPORATED IN N.S.W)
4E. Woodcock Place, Lane Cove, N.S.W. 2066, Australia