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TIPS FOR GETTING THE MOST FROM YOUR 75-509
Due to the band of operation (462/467 MHz) the 75-509 provides communications that
are virtually free of atmospheric interference (skip) that is common on lower
frequency bands. Along with this and an antenna system that is very efficient as
compared to other unlicensed radio bands, communications range is surprisingly good.
Many times the limits to maximum possible range are environmental factors such as
blockage caused by trees, buildings, hills, or other obstructions. If you find
communication is not possible, many times this can be overcome by moving only a few
feet to a new location. Range may be reduced while operating in a vehicle or from
inside to outside a metal building. Battery condition also affects range. The 75-509
operates best on alkaline batteries. While this unit has been designed with gaskets for
water resistance and ruggedness it is a precision piece of electronic equipment that
should not be exposed to water or handled carelessly. Normal care should result in
years of trouble free operation. Do not leave batteries installed over a long period of
time as leakage may occur that can destroy the radio. Always save your receipt, as it is
required for warranty consideration.
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PREPARATION
BATTERIES
75-509 radios operate with 3 AA Alkaline, Ni-Cad (nickel cadmium) or Ni-MH
(nickel metal hydride) batteries (optional). Ni-Cad batteries provide about 15 hours of
use. Alkaline batteries will provide about 45 hours of use and Ni-MH batteries will
provide about 24 hours of use. If the 75-509 is supplied with Ni-Cad batteries and a
wall charger. Ni-Cad batteries must be charged prior to use. Charge at least 10 hours
with the standard charger. If you are using Ni-MH batteries charge at least 16 hours.
DO NOT attempt to charge any type of Alkaline batteries in this radio.
To Install Batteries:
Hold the radio face down. Press the latch so it swings away from the cover.
1. Lift the battery cover slightly. Gently slide the cover off the unit.
2. Insert 3 AA batteries observing the proper polarity.
3. Replace the battery cover over the batteries and fasten with the latch.
Low Battery Indicator:
The battery icon in the lower left of the display will flash when the batteries are in
need of charging.
Instructions for optional charger
Install NI-Cad (nickel cadmium) batteries observing their polarity. Plug the 18-396
charger into any 110/115 V wall socket.
bottom of the radio under the rubber plug
batteries for at least 10 hours.
DO NOT attempt to charge any type of Alkaline batteries in this radio.
Plug the cord into the jack on the
marked "CHG". Charge the
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