Kenwood TMD 700 E Service Manual

Page 2

TM-D7OOA/ E

CIRCUIT DESCRIPTION

Outline

This device is a dual-band 144/430MHz FM car transceiver

planned and designed for amateur radio communications and
has the lollowing features

1.

10.

11.

Has a built-in TNC which conforms to the AX.25 protocol.
With a portable computer, allows you to enjoy Packet
operation quite easily.

includes a program for dealing with data formats supported
by Automatic Packet/ Position Reporting System (APRSG).
ls capable of receiving packet data on one band while
receiving audio on another band.

Enhanced Programmable Memory (PM) channels store
virtually entire current operating environments for your
quick recall.

Contains a total 01 200 memory channels to program
frequencies and other various data. Allows each memory
channel to be named using up to 8 alphanumeric and
special ASCII characters.

"Visual Scan graphically and simultaneously shows the
conditions of up to 181 frequency channels.

Continuous Tone Coded Squelch System (CTCSS) or
Digital Code Squelch (DCS) reiects unwanted calls from
other stations.

The separate iront panel can be mounted in a convenient
different place trom the main unit.

Equipped with an easy-to-read large LCD with
alphanumeric display capability.

Enhances the functions of an optional VC-H1 interactive
Visual Communicator designed for plug-and-play color
slow-scan television (SSTV).

Utilizes Sky Command System [I designed to control a
KENWOOD HF transceiver at a remote location (U.S.AJ
Canada only).

List of Destinations

Modal Guarantee frequency range (MHz) Output Power (W)
1 44 430 1 44 430
TM-D700A K 144~148 438450 50 85
M4 144-146 430~440 J 25 25
TM-D700El E 144~146 430-440 J 50 35

K: USA/Canada M4: Taiwan E: Europe

Accessories
Name Parts number Remarks Destination
K E M4
Modular cable E30-3391-05 3m 1 1 1
Panel bracket £10663 1 1 1
J29-0664-13 1 1 1
Bracket J29-0628-23 1 1 1
Microphone T91-0396-o5 1 1
T91-0615-05 DTMF BACK LIT 1
DC cord E30~2111-15 1 1 1
Fuse F51-0017-05 15A 1 1 1
Mic Hook J19-1526-04 1
862-1228-00 English 1 1 1
862-1232-00 French 1 1
362-1231-00 Spanish 1 1
Instruction manual B62o1230~00 German 1
362-1233-00 Dutch 1
362-1273-00 English APRS 1 1 1
562-1234-00 Chinese 1
B62»1229-00 Italian 1
Warranty card BAG-04694 CI 1
846-0337-03 1
Cable E30-3400~05 02.5mm GPS jack 1 1 1
Screw set N99-0331-05 For the body 1 1
Screw set N99-0382-05 Fertile body and MIC look 1
§crew set N99-2014-05 Forthepanei bracket 1 1 1
Foot J02-0488-04 For protect from 4 4 4
scratch on a desk
Pamphlet l 859-1684-00 1

Units for Each Model and Destination

Model TX-RX UNlT LCD ASSY

K x57-5aeo-1 1 SSS-082905
TM'D700A M4 x57-seso-21
TM-D700E E X57-5862-71

Page 12

TM-D7OOA/ E
CIRCUIT DESCRIPTION

12

5-3.Serial control

The CPU (IC604) controls the panel unit (X54-329 unit)
through a synchronous serial communication. The CPU
00604) controls the TNC CPU (ICS: X52-331 unit) through
9600bps serial communication. In APRS mode, settings and
transmission data are sent from the CPU (IC604) to the TNC
and received packet data is sent from the TNC to the CPU
(l0604). In the packet transmission mode, a personal
computer is connected with the CPU (ICGO4)through the RS-
232C driver (K3600). The data from the personal computer is
received by the CPU 00604) and transferred to the TNC
CPU(lC3). The received packet data is sent lrom the TNC
CPU(IC$) to the main CPU(ICso4), which transfers the raw
data to the personal computer. In the personal computer
control mode, the CPU(ICSO4) receives and processes data
lrom the personal computer and sends the processed data
back to the personal computer.

GPS TNC
_0- X52431

COM CPU DISPLAY
o<->
ersona computer Ice x54-329

Fig.13 Structure of non-synchronized serial
communication

5-4.NarrowNVide switching circuit (T M-D700E only)

The receiver band width can be switched between narrow
and wide by selecting IF ceramic filters, CF100 (narrow) and
CF101 (wide) on the A band with a switching circuit(0100,
0101, D100, D101). On the B band, the receiver band width
can be also switched between narrow and wide by selecting IF
ceramic tilter CF400 (narrow) and CF401 (wide) with a
switching circuit (0400, 0401, D400, D401).

The transmitter deviation can be switched between narrow
and wide by setting the electronic variable resistor (IC804) on
the deviation adjustment point. It is controlled from the CPU
(IC604).

|C1DO
TA31186FN

i

CF WIDE

CFtot La

D100 0101

CF NARROW

CF100

IC400
TA31 1 36FN

CF WIDE

CF401

D400
CF NARROW

CF400

Fig.14 Narrow/Wide Switching circuit

Page 41

TM-D7OOA/ E

ADJUSTMENT

Adjustment mode

0 This is the adjustment mode for making adjustments or
setting levels.
- The following items can be adjusted or set.
A. Squelch open sensitivity
B. S meter (the first segment ON, all segments ON)
C. Transmission output power (Ioweriimit frequency, center
frequency, and upper limit frequency of the band)
D. Transmission deviation
E. DCS modulation balance
F. Tone deviation
G. DCS deviation

Adjustment mode startup method

1. Turn [PWR] OFF and insert the adjustment plug into the
data terminal of the transceiver.

2. Hold down the [F] and [TONE] keys, and tum [PWFI] ON.

3. The transceiver will enter the adjustment mode and display
the following:

SQUELCH
FF
nn

H M

4. In adjustment mode, the desired band andtrequency can be
selected with [VFO], [MR], [ENCODER], [MHZ], and
[BAND SEL].

5. Pressing the [+1 or [ + ] key switches the adjustment item
to the previous item or the next item among the seven
adjustment items A-G.

A. Squeioh open sensitivity (value set for each band)

1. Press the [1-] and [-) ] keys to display SQUELCH'.
The current squelch level input value is displayed on the
screen and adjustment can be performed. (See the figure
below.)

SQUELCH

.144.III 5.5
I t- 9 SET

2. When specified SSG input is applied to the antenna
connector and the [SET] key is pressed, an adjustment
value is set.

QM

B. 3 meter (value set for each band)
1. Press the [4-] and [-1 ] keys to display 8 METER".
The current S meter input value is displayed on the
screen and adjustment can be performed. (See the figure

below.)

" are
144. IE m.

(- -) SI. 57 RM

2. 8 meter (the first segment ON)
When specified SSG input applied to the antenna
connector and the [31] key is pressed, a value is set so
that the first segment of the S meter turns on.

3. S meter (all segments ON)
When specified SSG input applied to the antenna
connector and the [57] key is pressed, a value is set so
that the all segment of the S meter turns on.

c. Transmission output power (values set independently
for 144MHz and 430MHz)
1. Press the [+1and [ +1 keysto displayAPC.
The current transmission output power setting is
displayed on the screen. (See the figure below.)

fllflfiflfl H nPc
r r r FF FF FF
.m144- nn

(- + FRESH. FREE FREE LOW

2. Select a desired transmission output range (HI, MID, or

LOW) with the [LOW] key.

3. Connect the power meter to the antenna connector.

Connect a microphone to the microphone connector.

4. Lower limit frequency transmission output selling.

(1)Set the lower limit frequency and p ress the
microphone PTT button to enter transmit node.

(2)Adjust the power meter to the prescribed transmission
power by turning the encoder.

(3)When the specified transmission power value is
reached, release the microphone P'i'l' tutton and
press the [FREO1j key to set the adjustment value.

5. Center frequency transmission output setting.

(1)Set the center limit frequency and press the
microphone PTT button to enter transmit node.

(2)Adjustment the power meter to the prescribed
transmission power by turning the encoder.

(3)When the specified transmission power value is
reached, release the microphone PTT thton and
press the [FREQZ] key to set the adjsutmefl value.

41