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Old 12-19-2012, 06:17 PM   #1
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CB antenna issues

I have a 2004 TJ and I'm putting a cb radio in it. The radio is a cobra 29ltd. The antenna is a Wilson 1000. Everything works perfect. When I installed it today I can't get it to receive. Not somewhat is going on. The cb is wired straight to the battery, and the antenna is mounted to the rear bumper. I've had cb radios for years and I have never had this problem before. Any help would be greatly appreciated.

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Old 12-19-2012, 06:22 PM   #2
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Did you calibrate it with your SWR Meter?? I'm sure you did if you are already a previous CB owner, just a thought.


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Old 12-19-2012, 06:22 PM   #3
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RF Gain turned up all the way? Squelch not turned up too far? Antenna not being shorted to ground via an improperly assembled mount?

That the antenna may not have been tuned for minimum SWR yet will not affect its ability to receive CB signals.

If the RF Gain & Squelch controls are set properly, please verify them, try sticking just a short length of wire with the insulation removed from the end into the CB's center pin connector on its antenna jack and testing to see if you can receive anything. If it starts receiving signals with a piece of wire in the center antenna connector jack but not with the antenna connected, the antenna is shorted to ground via its antenna mount... likely from having been misassembled.
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Old 12-19-2012, 06:36 PM   #4
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I'm wondering if the antenna is getting a good ground. If I move the antenna around it will receive very little and then go back to nothing at all. I sanded the bumper, but I am starting to think maybe I did not sand it enough. The rf gain is turned down and so is the squelch.
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Old 12-19-2012, 06:38 PM   #5
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I have tried turning the rf gain all the way up and down and half way but no difference.
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Old 12-19-2012, 06:50 PM   #6
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The RF gain control must be turned all the way up. The squelch control must be adjusted so it is just quieting the hiss. That the antenna mount may not be grounded will not prevent the CB from receiving signals. A misassembled CB antenna mount can short the antenna to ground and prevent it from receiving signals. That is often caused by the nylon insulating shoulder washer not having been inserted properly.
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Old 12-19-2012, 07:01 PM   #7
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Thanks I'll check that tomorrow. I'm tired of messing with it today. It's got me rattled.
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Old 12-19-2012, 07:13 PM   #8
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The antenna mount's nylon insulating shoulder washer's sole job is to insulate the antenna from the mount so the antenna mount which is supposed to be grounded doesn't also ground (short) the antenna.
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Old 12-19-2012, 07:21 PM   #9
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The antenna was a magnetic mount and it was converted to a bumper mount. So I bet the guy did not put the washer in it.
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Old 12-19-2012, 08:05 PM   #10
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I had problems with mine until I ran a ground strap to the mount

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