P L L & T RAN SM I T T E R
S et up the test equipment as shown above
for transmitter alignment.
Adjust
the
supply voltage to 7 . 2V for all steps.
PLL VCV (Varactor Control Voltage)
1 ) Connect the DC voltmeter between L2001
on the TX U nit and chassis ground .
2 ) Set the transceiver to alignment 'Channel
5. Key the transmitter and adj ust trans
former T 200 1 on the TX Unit for 4 . 0V on
the voltmeter.
3 ) While receiving on alignment channel 5 ,
adj ust trimmer T C2002 o n the TX U nit
for 4.0 volts DC.
4) Set the transceiver to alignment channel
4, and confirm the low-end VCV is 0 . 5
volts while transmitting, and 0 . 5 volts
while receiving.
Transmitter
Output
Power
1 ) Set the transceiver to alignment channel
3,
and set the transceiver to HI GH
power.
2) Adj ust L20 1 5 , T C2003 and TC2004 on the
TX .U nit for peak output power on the
wattmeter.
3) P ress the H/L b utton (on the front
panel ) , to set the transceiver to LOW
power. Adj ust VR2001 on the Mother
Board for 0 . 5 watts output.
PLL
Reference Frequency
With the transceiver set to alignment
channel 3, adj ust
T C40 1
on the PLL U nit,
if necessary , so the counter frequency
matches the Tx frequency in the alignment
channel chart corresponding to the version
being aligned, when transmitting.
Modulation
Level
1 ) With the transceiver set to alignment
channel 3, adj ust
the AF
generator for
25mV output at 1 kHz to the
MIC
jack .
2 ) Adj ust VR1004 on the RX U nit for 4 . 5
kHz deviation o n the deviation meter.
R E C E I V E R
Set up the test equipment a s shown b elow
for receiver alignment.
1) With the transceiver set to alignment
channel 3 and the RF signal generator
tuned to the corresponding receive
frequency shown in the alignment fre
quency chart, set the generator for
3 . 0
kHz deviation of a 1 kHz tone, and set
the output level for 40db u at the anten
na jack .
2 ) Adj ust T lOO l through T 1004 on the RX
U nit for optimum S I NAD, and adj ust
T l005 on the RX U nit for peak of AF
output power.
VR I 004
T I 005
Receiver Alignment Setup
VR I 003
T I OO I
T I 002
T I 003
T I 004
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