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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.
■ Test Frequency (MHz)
CH
RX Frequency
1
155.05000
2
136.05000
3
173.95000
4
155.00000
5
155.20000
6
155.40000
7~16
-
■ Signaling
No.
RX (Decode)
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
None
10
None
ADJUSTMENT
TX Frequency
155.10000
136.10000
173.90000
155.00000
155.20000
155.40000
-
TX (Encode)
None
100Hz Square Wave
QT 67.0Hz
QT 151.4Hz
QT 210.7Hz
QT 254.1Hz
DQT D023N
DQT D754I
DTMF
(Code: 159D)
DTMF
(Code: 9)
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
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 (MHz)
Tuning point
Low
136.05000
Center
155.05000
High
173.95000
Adjustment Points
TX-RX UNIT
Component side view
CV
CV: VCO Lock Voltage
IC400
Note: When replacing CF200, apply bond to
the point shown in the fi gure.
Foil side view
S401
Side KEY
S400
PTT
J301
SP
J300
MIC
TK-P701
RX
TX
136.10000
155.10000
173.90000
‒
+
MIC300
ANT
BATT+
BATT–
CF200
CD200
19
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