Question about Cobra 18 WX ST 40-Channels Base CB Radio

4 Answers

Cobra 18 wx st cb problem

I recently installed this cb in my 1999 ram witha new single whip antenna from radio shack. The problem is in cb mode nothing happens. The signal strength bar stays with only one light lit, even with the mic keyed. The weather bands work great. Any ideas what could be causing this?

Thanks,

Brandon

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  • fblawton Mar 16, 2008

    I just got a single whip antenna, I do not know how to match it. I do not have a swr meter but I adjusted the height of the anetnna up and down and it made no difference.

  • Dean Dishman May 11, 2010

    Did you match the antenna to the radio? What is your S.W.R. ( Standing wave ratio)??

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Check the swr on the antenna, if you have the wrong antenna, it wont work

Posted on Oct 24, 2009

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What is the meter set for? to see your signal it need to be on signal. The meter has 3 functions.

Posted on Oct 03, 2009

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You have to check the swr reading. Sounds like your antenna is shorted out. Probably at the mount. Main antenna can't touch ground.

Posted on Sep 16, 2009

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  • 6 Answers

Sounds to me like your finals in the rig have blown stopping you using the CB mode, Either that or you have a loose connection on the power output inside the radio.

Posted on Sep 05, 2009

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  • If you put 4 watts into a four-foot antenna, you will get the same power out of that antenna as if you were putting 2 watts into a 102-inch whip.
  • If you put 4 watts into a 3-foot antenna you will get the same power out as if you were putting about 1.5 watts into a 102-inch whip.
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Less within trees and mountains/valleys.
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