In , "Rob"
wrote:

I installed a CB in my Jeep Rubicon for use when my buddies and I go trail
riding. I mounted a *ahem* 48" Radio Shack fiberglass whip on a right angle
antenna mount directly to the rear bumper. I ran a 20' Radio Shack 50 ohm
cable from the antenna to the transmitter mounted under the seat (Cobra 75
WX ST).
Power is supplied by a 4 ga. wire directly from the battery. I scraped off
paint under one of the seat mounting brackets and bolted the wire to that to
get a good ground.

The problem I'm having is calibrating the SWR meter. When key and hold down
the mic, I turn the meter's calibration knob all the way to the right and
the needle is still short of the calibration mark.

Any suggestions would be greatly appreciated.

Rob Kulp


Could be lots of things. First, check the radio and antenna on a friend's
vehicle to make sure they work. Check the coax to make sure there isn't a short
from the center conductor to the shield. Check the entire length of the coax to
see if there are any nicks, crimps or sharp bends. If so, or if you are using
foam coax (RG-xx/F), throw it away and get some good stuff. Wind your excess
coax in a figure-8, not a loop. Keep your ground lead as short as possible. Make
sure the antenna mount isn't shorted. Check your SWR meter to make sure you have
it set for the correct range. The meter could be bad, so test your installation
with a different meter. Check your DC voltage at the radio when you key up -- if
the voltage drops you might have a weak connection somewhere.

If all that fails to reveal the problem, seek a local expert.







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