TK-2202L
16
■
Frequency and signaling
The transceiver has been adjusted for the frequencies
shown in the following table. When required, readjust them
following the adjustment procedure to obtain the frequencies
you want in actual operation.
Frequency (MHz)
Channel No.
RX Frequency
TX Frequency
1
155.050
155.100
2
136.050
136.100
3
173.950
173.900
4
155.000
155.000
5
155.200
155.200
6
155.400
155.400
7~16
Adjustment Frequency
TEST CH
RX
TX
Low
136.050MHz
136.000MHz
Low’
145.550MHz
145.600MHz
Center
155.050MHz
155.100MHz
High’
164.550MHz
164.600MHz
High
173.950MHz
173.900MHz
ADJUSTMENT
Adjustment points
VR1 : Frequency adjustment
BPF : Band-pass wave form test point
CV : Lock voltage adjustment terminal
TC1 : Transmit lock voltage adjustment
TC2 : Receive lock voltage adjustment
CV : Lock voltage adjustment terminal
Signaling
Signaling No.
RX
TX
1
None
None
2
None
100Hz Square Wave
3
QT 67.0Hz
QT 67.0Hz
4
QT 151.4Hz
QT 151.4Hz
5
QT 250.3Hz
QT 250.3Hz
6
DQT D023N
DQT D023N
7
DQT D754I
DQT D754I
8
DTMF 159D
DTMF 159D
9
None
DTMF tone 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
connected 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.
VR1
BATT+
CV
BPF
CN13
ANT
TX-RX UNIT
Component side view
S1
PTT
S3
SW2
S2
SW1
TC1
TC2
CV
J301
EXT. SP/EXT. MIC
TX-RX UNIT
Foil side view
