Codan Envoy Reference Manual

INSTALLATION
FIXED STATIONS
418 ENVOY™ TRANSCEIVER REFERENCE MANUAL
Troubleshooting the fixed antenna
Common problems caused by incorrect installation are listed in Table 38.
WARNING: Before using the antenna system see the safety information provided.
WARNING: Poor installation can damage the antenna beyond repair.
Table 38: Possible faults in the fixed antenna installation
Symptom Possible cause Action
Antenna fails to tune
certain channels
The antenna and/or tuner
may not be earthed
correctly
Improve the earth connection.
Incorrect positioning of
the antenna
Check that the position of the antenna corresponds
to the desired direction of communication. The
antenna must also be positioned away from trees,
buildings etc, which provide a shielding effect and
diminish the efficiency of the antenna.
With an SWR meter in place, alter the position of
the antenna to achieve best forward-radiated
power.
Inadequate support of the
antenna
Ensure the antenna has adequate support so that it
does not sway or sag. If required, use antenna
supports such as guyed masts.
Poor radiation
efficiency
Poor installation Improve the earth connection.
Incorrect positioning of
the antenna
Check that the position of the antenna corresponds
to the desired direction of communication. The
antenna must also be positioned away from trees,
buildings etc, which provide a shielding effect and
diminish the efficiency of the antenna.
With an SWR meter in place, alter the position of
the antenna to achieve best forward-radiated
power.
If the problem persists, check the antenna length
(for long wire antennas), the length of the antenna
feed wire, and the conductivity of the earthing
system. Alter these slightly in an attempt to
achieve better tuning.
Check that the problem does not move to other
channels.
The antenna and/or tuner
may not be earthed
correctly
Improve the earth connection.

Codan Envoy Specifications

General

Brand	Codan
Model	Envoy
Category	Transceiver
Language	English