TransWorld Antennas
TW8080
TM
TW8080
TM
Instruction Manual
11
6.3 Connections
Warning: Turn off equipment before making or removing any connections.
Failure to do so could result in equipment damage.
Coax cable. Connect your coax cable to your
radio and to the SO-239 on the TW8080’s
loading array box. It is highly recommended to
use at least 65 feet of coax on your TW8080.
For best performance, use a high quality RG-8
or RG-8X coax cable.
Final connection notes: The coax cable should
feed the antenna at a 45-degree angle as
shown in the figure at right. Failure to do so
will result in parasitic coupling and cause
higher than normal VSWR readings.
6.4 Tuning
Although your TW8080 was factory pre-tuned
3
, the environment in which your
antenna is placed has an effect on tuning. Some minor adjustments may be
necessary to tune the antenna to the desired center frequency for each band.
Check the tuning of the antenna using an analyzer or the SWR meter on your
transceiver before performing the tuning process. Post-factory tuning might not
be required.
Danger: Do not apply RF power to the antenna while anyone is standing
near the antenna. RF burns or electrical shock may occur, causing severe injury
or death.
3
The antenna is pre-tuned to the center of the general portion of the phone band under circumstance that
may differ from the environment of your specific installation.
