CB Antenna Questions (AEV rear bumper) - JKowners.com : Jeep Wrangler JK Forum
 
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post #1 of 5 Old 11-18-2010, 09:40 AM Thread Starter
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CB Antenna Questions (AEV rear bumper)

All,

I have a question about CB antenna mounting and CB antenna systems. I have read tons of information about CB radio theory so I don't need links to standard definitions that I more then likely have already studied. What I'm really looking for is how you guys have specifically mounted and grounded your antennas.

For example, if you mounted your antenna on the mast of your after market bumper did you ground the mount to the body/frame? If so, how long did your ground wire/strap end up being? I've read that the shorter the wire the better the results but I just don't see how a short wire could be used to ground the mount when starting from the upper most part of the bumper mast. Is it sufficient to just ground to the tailgate and then ground the tailgate to the body/frame instead of running a wire from the top of the mast, through the tailgate to the body? Make sense?

Additionally, I was wondering about real world opinions on a no-ground plane (NGP) antenna system. I've read so many varying responses to this type of setup that it really makes it hard to make an informed decision. Some people say a NGP antenna works fine while others despise them. I understand that a NGP antenna system, by nature, is not as efficient as a standard ground plane (GP) antenna but is the decrease in performance that extreme. Are we talking about a 1.3 mile range instead of a 2 mile range or are we talking about a 50 yard range instead of a 2 mile range?

Thanks for your time and information.

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post #2 of 5 Old 11-18-2010, 09:49 AM
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If you mount it on the tire carrier you shouldnt need to ground it to anything but the carrier. This can be done by taking the paint off of your mounting spot or running a small ground strap. The bolts on the bumper should ground it to the body.

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post #3 of 5 Old 11-18-2010, 09:59 AM Thread Starter
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Quote:
Originally Posted by SONIC View Post
If you mount it on the tire carrier you shouldnt need to ground it to anything but the carrier. This can be done by taking the paint off of your mounting spot or running a small ground strap. The bolts on the bumper should ground it to the body.
I've read this before but to be fair I've also read the exact opposite. This is what makes my brain hurt.

I've read that due to powder coating the conductivity is greatly reduced. Add to that the fact that brass bushings are used to mount the carrier to the bumper and you end up with a very unstable platform to ground to. At least this is the other side of the coin to your advice.

I would love to hear real world accounts of people just grounding to the bumper mast itself and how it affected their CB performance and SWR values.

Thanks for the response.

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post #4 of 5 Old 11-18-2010, 11:18 AM
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This is my mount and I ran a 8" braided wire from antenna mount to the frame to insure proper grounding.


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post #5 of 5 Old 10-04-2011, 08:56 AM
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Any updates?

I'm about to mount an antenna on an AEV rear bumper and looking for any advice I can find. Like the OP said, you can find two sides to every theory so I'm looking for real world experiences and results.

Thanks!!
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