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OWNER'S MANUAL FOR THE F-20 (FRS W/532 CODES)
TIPS FOR GETTING THE MOST FROM YOUR F-20
Due to the band of operation (462/467 MHz) the F-20 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 limit to maximum possible range is
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 is greatly reduced while operating from a metal building or from a
vehicle. Battery condition also affects range. The F-20 operates on rechargeable Ni-Cad batteries
or 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. If
you experience problems operating the radio, turn off the radio, press and hold the "F" button
and turn on the radio.This will cause the radio to return to the factory settings. Always save your
receipt, as it is required for warranty consideration.
A NOTE ABOUT THE CTCSS CODES
This radio incorporates 38 CTCSS (Continuous Tone Coded Squelch System) codes and 83 DCS
(Digital Coded Squelch) codes that, when activated, prevent the user from hearing other radios
that do not have the same code. These codes do not make your conversation private. If you
experience difficulties contacting or hearing other radios in your group make sure the CTCSS or
DCS code is set the same on all radios. If you are using the F-20 where interference from other
radios or electrical devices are present, enabling the CTCSS codes will usually mute the
interference. Many times interference will be noticed by the presence of loud static from the
speaker.
PREPARATION
BATTERIES
F-20 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. The F-20 may be
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 24 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.
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.
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