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English
RADIO OVERVIEW
RADIO OVERVIEW
This user guide covers the operation of the GP330 
Portable Radio.
Please read page 19 before using this radio.
OPERATION AND CONTROL FUNCTIONS
Radio Controls
The numbers below refer to the illustrations on the 
inside front cover.
1. Channel Selector Knob 
Used to switch the radio to different channels.
2. On-Off/Volume Knob 
Used to turn the radio on or off, and to adjust 
the radio’s volume.
3. Side Button 1 (Programmable)
4. Push to Talk Button (PTT) 
Press and hold down this button to talk, release 
it to listen.
5. Side Button 2 (Programmable)
6. LED Indicator 
Green: Successful power up. 
Red: Radio transmitting. 
Blinking Red: Channel busy – when receiving. 
Yellow: Radio call. 
Blinking Yellow: Radio call reminder alert. 
Blinking Red: Low battery warning – when 
transmitting.
7. Microphone 
Speak clearly into the microphone when  
sending a message.
8. Antenna
9. Accessory Connector 
Connects headsets, remote speaker/
microphones and other accessories. 
 
Replace attached dust cap when not in use.
Programmable Buttons
The two side buttons on your radio can be 
programmed to activate the radio features. 
 
The following table shows the features that can be 
assigned to these buttons.
GP330_UG.book  Page 3  Thursday, September 6, 2007  11:51 AM