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: Calibrates the meter for Standing Wave Ratio
(SWR) measurements.
8. Weather Channel Knob: Selects weather channel.
9. Channel Knob: Selects channel.
10. Channel Display: Displays current channel selection.
11. RX/TX Indicator: Red-transmitting; green-receiving.
12. ANT: Indicates a high SWR condition in antenna system. Check
antenna, cable and connections.
13. Dynamic Squelch Control (DSC): Automatically sets Squelch to
optimal level for stronger signals.
14. CH9/OFF: Turns Channel 9 on or off.
15. BRT/DIM: Adjusts the brightness of LED.
16. NB/ANL: Reduces external noise and interference from vehicle
ignition systems.
2
Controls and Functions
FRONT VIEW - PC78 Elite BACKLIGHTED PANEL
UC343FH 10/23/03 2:32 PM Page 2