Kenwood TK-3160 Service Manual page 17

TK-3160
Adjustment points TX-RX unit (X57-673)
Component side view
TXD
PTTO
SP–
PTTI
(RXD)
SP+
DET
X57-673 A/2
Component side
BATT+
ANT
VR1 : Frequency adjustment
RSSI : Band-pass wave form test point
Foil Side View
ALT2
A4
A3
A2
A1
LSDFO
X57-673 A/2
Foil side
MIC O
RA O
A6
A4
ALT
GND
SB
RA I CV
MIC I
TC1
TC1 : Transmit lock voltage adjustment
TC2 : Receive lock voltage adjustment
CV : Lock voltage adjustment terminal.
Fig. 1 Adjustment points
16
ADJUSTMENT
SP MUTE
RSSI
VR1
CV
RESET
BPF
TC2
ANT
Frequency and signalling
The set 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) E3 type
Channel No. RX Frequency
1 415.050
2 400.050
3 429.950
4 415.000
5 415.200
6 415.400
7~16
Signalling
Signalling No. RX
1 None
2 None
3 QT 67.0Hz
4 QT 151.4Hz
5 QT 210.7Hz
6 QT 254.1Hz
7 DQT D023N
8 DQT D754I
9 DTMF 159D
10 None
5 Tone:
11 CCIR
1,2,3,4,5
12 None
13 None
14 MSK Code
• 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
connected to a suitable dummy load (i.e. power meter).
The speaker output connector must be terminated with a
8Ω 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 (E3 type)
TEST CH RX
Center 415.050MHz
Low 400.050MHz
High 429.950MHz
Low' 407.550MHz
High' 422.550MHz
TX Frequency
415.100
400.100
429.900
415.000
415.200
415.400
TX
None
100Hz Square Wave
QT 67.0Hz
QT 151.4Hz
QT 210.7Hz
QT 254.1Hz
DQT D023N
DQT D754I
DTMF 159D
DTMF tone 9
5 Tone:
CCIR
1,2,3,4,5
Single Tone:1000Hz
MSK
MSK Code
E3
TX
415.100MHz
400.100MHz
429.900MHz
407.600MHz
422.600MHz