GT6201
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DV 17001.03 Issue 4 01/2015
Page 33
2.10
Trouble Shooting
Problem
Possible Reason
Proposed Solution
The VOX threshold cannot be
adjusted at all. VOX is always off.
VOX is forced off, because
speaker is on.
Switch speaker “OFF”.
Refer to chapter 2.7.
Too high cabin noise during
transmit operation.
The sensitivity of the microphone
input is too sensitive.
Adjust the microphone
sensitivity to a higher value
to ensure the surrounding
noise is reduced.
Recheck transmit operation
function.
Refer to chapter 2.7.
Speaker output is not working.
Speaker is switched off
Switch Speaker “ON.
Refer to chapter 2.7.
The noise suppression function of
the squelch is not working.
(Receiver noise is always present).
Other electrical systems, installed
inside the vehicle or in the near
vicinity, can produce quite high
electromagnetic interference,
which may be received by
GT6201.
Reduce the interference
emitted by the systems
around by improving
shielding, distance or
grounding.
The interference may also
be suppressed by adjusting
the squelch to a higher
value. Refer to chapter 2.7.
Note, that a higher value
will cause a reduced
sensitivity.
The display shows a warning or
failure message
(LOW BATT, STUCK PTT, TX
HOT, FAILURE)
Refer to “Warning and Failure
Indications” in chapter 3.13
Refer to “Warning and
chapter 3.13
The Antenna VSWR exceeds 3:1. Possibly caused by a defective or
insufficient counterpoise for the
antenna.
Check for sufficient size of
the counterpoise and make
sure there is no mechanical
defect on the antenna.
The impedance of the antenna
cable deviates significantly from
50 Ohm.
Make sure the used antenna
cable has 50 Ω impedance
and the cable is not pinched
or kinked on its way from
the radio to the antenna
Faults on the BNC connectors of
the antenna cable.
Check for proper
crimp/solder work on the
BNC connectors and rectify
as far as necessary.