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this setting. The squelch is now properly set. The receiverwill remain quiet until a
signal is actually received. Do not advance the control too far, or some weaker
signalswill not be heard.
OPERATING PROCEDURE TO TRANSMIT
1. Select the desired channel for transmission.
2. If the channel is clear, depress the push-to-talk switch on the side of the micro-
phone and speak in a normal voice.
CAUTION: The transceiver Voltage Standing Wave Ratio (V.S.W.A.)measurement
must be performed prior to the use of the transmitter. A "V.S.W.R." ratio in excess of
2:1 may damage the transmitter.
OPERATION OF SSB
Choose the desired side band frequency by, A; select standard channel (1 - 40), B;
select Upper or Lower side b~md by moving AM/SSB switch. Transmit or receive
according to previous instructions.
When receiving a side band transmission you may need to use the Clarifier control to
fine tune that frequency. Rotate the Clarifier clockwise or counterclockwise for
optimum reception.
PREVENTATIVE MAINTENANCE
At six to twelve month intervals, the followingsystem checks should be made:
1. Checkthe Standing WaveRatio (V.S.W.R.)
2. Inspect all electrical connections.
3. Inspect antenna coaxial cable for wear.
4. Inspect allscrewsand other mounting hardware.
TROUBLE SHOOTING
If your PC 122 is not performing up to your expectations, please try these simple
steps. If you still cannot get satisfactory results after readingthis manual and following
the trouble shooting steps, you may need to have your unit serviced.
trouble
Unit will not turn on.
No power
check
1. Check power cord and all connections.
2. Check power cord fuse.
3. Check vehicleelectrical system.
1. Check and adjust Squelch.
2. Check antenna system and cable, connectors.
3. Check operation mode of the radio.
1. Checkantenna system and cable, connectors.
2. Check antenna grounding.
3. Checkfor corrosion on connectors.
Poor reception
Weak transmission
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