128-6781
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Troubleshooting
Problem Probable Cause Remedy
No trans-
mission while
pressing the
PTT button
Weak battery
Charge or replace battery
Incorrect battery polarity Correctly install battery as
outlined in battery replacement
procedure
Weak battery Charge or replace battery
Weak, inter-
mittent or no
received signal
Channel not set to the same as
target transceiver
Adjust transceiver’s settings to
match those of the target
transceiver
Volume level too low
PTT button inadvertently
pressed
Increase volume level
Release PTT button
Excessive radio interference on
a particular channel
Obstruction of radio signal
Change to a different channel
Avoid operating in or near large
buildings or vehicles
Unit beeps, but
will not function
when turned on
Battery extremely discharged Charge or replace battery
Reception of
unwanted
signals
Interference from electronic
devices such as computers or
TVs
Turn the devices off or move
further away from them
Turn your transceiver off on board aircraft when requested
to do so. Do not place your radio in front of a vehicle’s air-bag.
If the air-bag deploys, it could propel the transceiver like a
projectile causing bodily injury.
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