Codan 2110 series Reference Manual page 78

Using the 9350 Automatic Tuning Whip Antenna with a 2110 Manpack Transceiver
Table 18:
Symptoms
Transceiver is not
responding to
instructions
Tuning fails
Voltage drop in the
battery
62
Possible faults in the installation (cont.)
Possible causes
The transceiver may
not be connected
correctly
Faulty cables and/or
connectors
Inadequate earthing
Voltage less than
12 V DC
Action
Check that the cables and connectors between all items of
equipment are securely connected and not damaged.
Check that the cables and connectors between all items of
equipment are securely connected and not damaged.
Antenna mounting bracket should be welded or bolted
directly to the chassis.
All paint should be cleaned from mating surfaces.
The earth braid provided should be connected to an
independent grounding point going to the bodywork of
the vehicle, or to the battery negative if possible.
Improve the earth of the transceiver by connecting an
earthing strap (braid or copper strip) from the earth
terminal of the transceiver to the earthing point, keeping
the strap as short as possible.
Check the voltage; it must be greater than 12 V DC on
transmit.
Manpack Transceiver 2110 series Reference Manual