Am I Grounding My CB Antenna Correctly? (Pics) - Jeep Wrangler Forum
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Old 10-04-2013, 08:52 PM   #1
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Am I Grounding My CB Antenna Correctly? (Pics)

Hi Everyone,

I am attempting to install a CB radio - is this the correct way to ground the antenna?

The grounding wire terminal is supposed to NOT touch the inner threaded part right? (and in this case I might need a terminal with a larger inner circumference to prevent it from touching, or any advice on what to use?)

There is an insulator on top of the mount.

Thanks!




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Old 10-04-2013, 09:22 PM   #2
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Just found this image which is helpful, yes, I do not want my terminal touching the threaded part and the outer shell together, that would short it out.


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Old 10-04-2013, 09:34 PM   #3
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Quote:
Originally Posted by boon4376 View Post
Just found this image which is helpful, yes, I do not want my terminal touching the threaded part and the outer shell together, that would short it out.
Looks like ya got it figured. Just in case, everything above the mount must be isolated from ground by the nylon washer with the shoulder down in the hole. The threads below the mount are grounded (for a pl259 screw on). If your mount is installed and bonded properly you don't need a grounding wire.
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Old 10-06-2013, 07:43 PM   #4
Knows a couple things...

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Grind the powdercoating away from that mount at two points... where it bolts to the Jeep so it gets a bare metal connection, and on the bottom where the top of the bottom-half of the antenna mount touches it, on the side shown in your first photo. A simple wire provides a DC ground which is adequate for lights & all of the electronics on a TJ but that wire can't provide the "RF ground" type of connection that an antenna requires... it needs more of a surface area than a simple wire can provide.

Yep remove that ring terminal shown in your second photo... that will eventually short the antenna to ground.

Look carefully at the mount that the antenna screws into... you'll see the top and bottom of the mount are actually insulated from each other so the top half won't be shorted to ground by the bottom half that is supposed to be well grounded. The insulation can be seen in your second photo, it's the white nylon you can see under the ring terminal.
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