Question about Cobra 29 LTD CB Radio
I recently bought this CB, a big upgrade from my last POS. The factory installed antenna in my truck works fine, but when I recently upgraded my antenna to an oil coil, I can't get the SWR calibration to get below three or even meet the calibration mark on the meter. I've tried shortening the antenna, but the next step would be to start snipping pieces off. (I read that somewhere) Any before someone types it first - I'll say it.... Go back to the factory antenna! ;-)
Powerfull antenas require longer coax!!!!ex:Willson 5000 ,18 feet coax!!!!
Posted on Dec 23, 2009
GROUND, GROUND, GROUND! If you are running more than barefoot, you should have everything GROUNDED. 95 percent of high SWR is related to a bad ground plane with the antenna. I would run ground straps from body to frame, doors, everything. If all else falls, run a ground strap, as short as possible, to the antenna mount. It'll work everytime.
Posted on Aug 11, 2007
Double check your connections and your cable for shorted PL 259 connectors. Oil filled antenna! Humm Sham on you if you are using a liner! Oh and quit sniping the antenna remember the higher in frequincy the shorter the antenna and longer for lower in frequincy. So it could be just where the antenna is located some antennas work good there but a diferent one wont try another spot also make sure your in a clear area when checking SWR not your drive way next to the garage or house or other car and finaly use an external SWR meter the ones on the radio some times SUCK.
Posted on Jul 07, 2007
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