Kenwood TK-2402, Service Manual

Page: 26 / 46

TK-2402(V)/2402/2406/2407
26
ADJUSTMENT
Frequency and Signaling
The transceiver has been adjusted for the frequencies
shown in the following table. When required, re-adjust them
following the adjustment procedure to obtain the frequencies
you want in actual operation.
■
Frequency (MHz)
Channel No. RX Frequency TX Frequency
1 155.05000 155.10000
2 136.05000 136.10000
3 173.85000 173.90000
4 155.00000 155.00000
5 155.20000 155.20000
6 155.40000 155.40000
7~16 - -
■
Signaling
Signaling No. RX (Decode) TX (Encode)
1 None None
2 None 20Hz Square
3 QT 67.0Hz QT 67.0Hz
4 QT 151.4Hz QT 151.4Hz
5 QT 210.7Hz QT 210.7Hz
6 QT 254.1Hz QT 254.1Hz
7 DQT D023N DQT D023N
8 DQT D754I DQT D754I
9 DTMF (Code: 159D) DTMF (Code: 159D)
10 None DTMF (Code: 9)
11 None MSK (1010)
12 FleetSync (100~1000) FleetSync (100~1000)
13 None Single Tone (1000Hz)
14
2-Tone
A: 304.7Hz,
B: 3106.0Hz
2-Tone
A: 304.7Hz, duration:1sec
B:
3106.0Hz,duration:3sec
15 None DTMF Tone (1477Hz)
16 Single Tone (979.9Hz)
Single Tone (979.9Hz)
Duration:5 sec
17 None MSK PN9
18 None DTMF (Code: 3)
Preparations for Tuning the Transceiver
Before attempting to tune the transceiver, connect the
unit to a suitable power supply.
Whenever the transmitter is tuned, the unit must be con-
nected to a suitable dummy load (i.e. power meter).
The speaker output connector must be terminated with a
8
Ω
dummy load and connected to an AC voltmeter and an
audio distortion meter or a SINAD measurement meter at all
times during tuning.
■
Adjustment frequency (MHz)
TEST CH RX TX
Low 136.05000 136.10000
Low’ 145.55000 145.50000
Center 155.05000 155.10000
High’ 164.55000 164.50000
High 173.85000 173.90000