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Basic Operations
Turning the Radio On/Off
PD502 U(1): Rotate the Radio On-Off/Volume Control knob clockwise/counter-clockwise until a click is
heard to turn the radio on/off.
Adjusting the Volume
PD502 U(1): After turning the radio on, rotate the Radio On-Off/Volume Control knob clockwise to
increase the call volume, or counter-clockwise to decrease it.
Selecting a Zone
A zone is a group of channels exhibiting the same property, and is programmed by your dealer. The radio
supports 3 zones: Zone 1, Zone 2 and Zone 3. Each zone contains 16 channels at most.
You may quickly toggle to your desired zone by pressing the programmed Zone Up or Zone Down key.
In the process, you will hear one alert tone for Zone 1, two alert tones for Zone 2 and three alert tones for
Zone 3.
Selecting a Channel
After turning the radio on, rotate the Channel Selector knob to select a desired channel.
Switching the Channel Mode
Each channel can be programmed as either analog channel or digital channel. If the current zone
includes both analog and digital channels, you may quickly switch between digital and analog through the
Channel Selector knob.
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