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HAM & CB antenna ground

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Old 04-13-2013, 03:37 PM   #1
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HAM & CB antenna ground

I'm installing both a HAM & CB this weekend. I have antenna mount tabs on the side of a bed rack


Since the rack sits on the plastic bed rail and is mounted with the OEM tracks in the bed I don't think mounting the antennas will be grounded.
What do I need to do to install them?
Thanks for any help
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Old 04-13-2013, 04:36 PM   #3
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Quote:
Originally Posted by LUSETACO View Post
Some say the bed rails are grounded. You have a lot of metal there so you should be ok. Install them, test them and add a ground wire if need be. Sorry that's all I got.....
Thanks, Should I ground under the antenna mount or run a screw into the bed rack and run a ground to the frame from there?
I don't want to key the mic and maybe fry the radios if its not grounded correctly.
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Old 04-13-2013, 04:43 PM   #4
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Post

Quote:
Originally Posted by kai38` View Post
Thanks, Should I ground under the antenna mount or run a screw into the bed rack and run a ground to the frame from there?
I don't want to key the mic and maybe fry the radios if its not grounded correctly.
Ground the mount to the frame with as little wire as possible. I think you will be ok though. You have an SWR meter to check?
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Old 04-13-2013, 04:44 PM   #5
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I have access to a meter
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Old 04-14-2013, 04:05 PM   #7
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Quote:
Originally Posted by kai38` View Post
Thanks, Should I ground under the antenna mount or run a screw into the bed rack and run a ground to the frame from there?
I don't want to key the mic and maybe fry the radios if its not grounded correctly.
Running a ground strap directly to the rack should work.

Just be sure that the antenna mount touches bare metal and isn't insulated by paint. Same with the connections for the ground strap.

Best way to check is to take a multi-meter and ohm it out. In the end you should see continuity between the antenna connector's ground and the frame.
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Old 04-14-2013, 04:39 PM   #8
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cb grouind

cb or sw lw requiees 208 lin ft ground for signel
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Old 04-14-2013, 05:12 PM   #10
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Quote:
Originally Posted by LUSETACO View Post
Wut?
X2
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Old 04-14-2013, 06:59 PM   #11
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Use a MFJ-259b antenna analyzer. It attaches to pl259 at the end of your coax. If your ground is bad. You see it on the analyzer. No need to have the radio in line like with a swr meter.
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Old 04-14-2013, 07:10 PM   #12
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Antenna "ground" isn't an electrical ground as most people think of it... Just mount the antenna to the rack and you'll be good.

Make sure the shield side of the antenna mount has a good connection to the rack and then the rack acts as the counterpoise or image plane (ground plane) for the antenna.
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Old 04-14-2013, 07:12 PM   #13
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...Looking at where your antenna tabs are, it's going to do interesting things with a U/VHF antenna.... Loading coils don't like being beside metal.

But it'll work....
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Old 05-02-2013, 09:08 PM   #14
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They do make what's called ground plane independent antennas. The ground on an antenna is the ground plane. Typically the ground plane would be the roof of the vehicle as it helps to direct and radiate the signal. The GPI antenna is designed different.

Good luck.
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Old 06-18-2013, 06:03 PM   #15
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What's the name of that sweet looking rack? I'm surprised no one commented on it.
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Old 06-18-2013, 06:25 PM   #16
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Quote:
Originally Posted by ZeroKingCobra View Post
What's the name of that sweet looking rack? I'm surprised no one commented on it.
The bed rack was made by http://anbcustomfabrication.webs.com/apps/webstore/

They also make one that's shipable
They will soon be making a rear bumper with dual swing outs for my Tacoma
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Old 06-18-2013, 07:07 PM   #17
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What Version is yours bolts or welded, is the middle vertical pole slightly located more to the rear of the truck, if so I like that.

I wonder with abit of ingenuity it can be place onto a 2002 Tacoma or fab to it fit it.


Thanks for The Reply.
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Old 06-18-2013, 08:55 PM   #18
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Quote:
Originally Posted by ZeroKingCobra View Post
What Version is yours bolts or welded, is the middle vertical pole slightly located more to the rear of the truck, if so I like that.

I wonder with abit of ingenuity it can be place onto a 2002 Tacoma or fab to it fit it.


Thanks for The Reply.
Mine is the welded version, I had it made a little taller then he usually makes them so my RTT would clear the roof
The bars are evenly spaced but he can adjust it for your needs
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