Question about Cobra 25 LTD 40-Channels Base CB Radio

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I have everything hooked up but all i get is static. I had someone from radion shack check the ground and hookup and they said it all looked good. I have tried numerous CB's and different anntennaes still nothing but static. What do you suggest to try. I have the antennae mounted to my truck box and grounded to my metal bed rails.

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Truck boxes may be the best looking place to mount a CB antenna but in my experience they are the worst place for performance.

The 'ground' you need is not an electrical ground but an RF ground. The easy answer is that you need to mount the antenna to a mirror or the bumper or even use a magnet mount instead on the roof. The body of the vehicle provides an RF ground that the small truck box cannot. The only way it might work is to use flat, wide ground straps at all four corners of your box to the bed of the truck. You need metal-on-metal contact.

Posted on Feb 12, 2010

  • MR LIGHTNING Mar 20, 2011

    you need to ground the truck box to the frame of the truck. most truck beds are insulated from the frame and not well grounded. also ground the radio well. i even recommend grounding the case on the radio to the frame. what are your swr's?

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