GE A3-5825B Use And Care Manual page 9

MAGNETIC
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GUTTER MOUNT
X239 TYPE
S
ENNA JACK
General rules for best mobile antenna performance:
1. Mount antenna on vehicle as high as possible.
2. The higher percentage of antenna length mounted above rooftop, the better performance.
3. Center antenna in middle of selected location (i.e. boot, gutter or roof).
4. Install antenna cable line away from noise sources (ignition system, gauges, etc.).
5. Be sure to mount antenna with a good metal-to-metal ground.
6. Prevent antenna cable damage:
Boot Mount — leave enough cable slack so boot can be fully opened.
Gutter Mount — route cable snugly to prevent cable flexing and allow closing of door or
windows.
For quick release — to remove antenna, always pull on the PL-259 plug and not on the
antenna cable.
Antenna performance may be peaked by slightly adjusting its length using SWR (standing wave
ratio) meter. This meter is purchased separately or the SWR can be checked by a local CB radio
serviceman. Most antennas are factory tuned but this adjustment may improve antenna efficiency.
An SWR reading below 1.5 is desired, as this indicates that over 95% of the transmit power is
broadcast into the air. For example if your SWR is 3.0, only 60% of power is broadcast. The
rest is "reflected" back into your CB and dissipated as harmless heat.
NOTE: Mounting the antenna in a boat will require a ground or special antenna. Grounding
can either be a metal hull, a ground made of tin-foil or copper sheeting, and cover an area of
12 square feet or more. The transceiver must also have an adequate ground.
WARNING: Operating unit without attaching antenna, or with a broken or shorted cable, will
result in low and possible no power output and can damage your CB Transceiver.
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