2
FRONT VIEW -
PC78XL
BACKLIGHTED PANEL
1.
Microphone Jack
2.
ON/OFF -VOLUME
: Turns radio on or off; adjusts speaker volume.
3.
SQUELCH
: Reduces background noise when there is no
incoming signal.
4.
RF GAIN:
Improves reception in strong signal areas.
5.
MIC GAIN
: Adjusts microphone sensitivity.
6.
DELTA TUNE
: Fine tunes the receiver.
7.
SWR CAL
: Calibrates the meter for Standing Wave Ratio
(
SWR
) measurements.
8.
Channel
Knob: Selects channel.
9.
Channel
Display: Displays current channel selection.
10.
RX/TX
Indicator:
Red
-transmitting;
green
-receiving.
11.
ANT
: Indicates a high SWR condition in antenna system. Check
antenna, cable and connections.
12.
Dynamic Squelch Control (DSC)
: Automatically sets Squelch to
optimal level for stronger signals.
13.
CH9/OFF
: Turns Channel 9 on or off.
14.
BRT/DIM
: Adjusts the brightness of LED Channel Display and
Indicator and RF Signal Meter.
15.
CB/PA
Switch: Selects
PA
(Public Address) or
CB
.
Do not use
PA
function unless an
external speaker is connected.
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