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Battery Alert
When the charge indication bars on the battery icon ( ) begin to disappear on the LCD panel,
recharge unit or install fresh batteries. If the batteries are not replaced, the ( ) icon bars will fade
and a unique audio tone will sound each time a button or control is pressed; however, no display
changes will occur. This condition will warn the user that the batteries must be replaced, or that the
batteries must be recharged.
Batteries
There are three methods of powering the GMR-GPS:
1.Alkaline Batteries.
WARNING: Do not attempt to recharge Alkaline batteries.
2.Audiovox Rechargeable Ni-MH Batteries-(Rechargeable Ni-MH
batteries and Charging Stand not included). Use only Audiovox
approved rechargeable batteries and charger when charging
batteries internal to the unit.
NOTE: To extend battery life, avoid overcharging the batteries.
3.Various Brands of Rechargeable Batteries - Use of the Audiovox charger with other brands
of rechargeable batteries is not recommended, as battery charging times will vary with differ
ent brands of batteries. Refer to the manufacturer’s instructions for charging other brands of
batteries.
NOTES FOR GOOD COMMUNICATION
1 . The 15 channels of the GMR-GPS are shared on a ‘take turns’ basis. This means other groups
may be talking on any of the channels. A common code of ethics/courtesy is to switch to
another vacant channel and not to attempt to talk over someone who is already using the
channel you first selected.
2. The GMR-GPS has been designed to maximize performance and improve transmission range
in the field. To avoid interference, it is recommended that you do not use the units closer than
5 feet apart.
3. For best transmission results, always keep your mouth about 2-3 inches from the microphone
(4) and speak slowly in a normal voice.
4. To increase battery life, avoid features such as LCD backlighting for prolonged periods of
time. Features such as this will reduce operating time considerably.
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