Author Topic: CB troubles  (Read 317 times)

Offline Cwood429

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CB troubles
« on: May 23, 2017, 07:42:30 PM »
So I just finished installing my CB setup. (Uniden PRO505XL, 18' coax, rugged ridge spare tire antenna mount, Firestik heavy duty antenna spring, quick disconnect and 4ft black firefly)

I attempted tuning antenna and my SWR was way to high at 6+ with no significant movement with antenna adjustments.

My thought is the powder coating on the antenna bracket is preventing an adequate ground?

I've heard the spare tire mount is the worst location for antenna...

Thoughts?

Thanks folks and side note it was nice meeting folks at Shady Glen!
Chris
2013 JKUS
nada

Online MassXJ

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Re: CB troubles
« Reply #1 on: May 23, 2017, 08:08:50 PM »
Yes and yes
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Back to work.  Thank you!

Offline JeepinMaxx

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Re: CB troubles
« Reply #2 on: May 23, 2017, 09:12:48 PM »
I agree with the previous post - the worst place to mount is on the spare tire carrier and a bad ground is complicating it.

The equipment you listed is pretty decent...

I'd remove the spring from the set-up

Hate to admit it - the best mount I've run is bolted to the tub just above the right hand tail light...

A band aid is to body ground whatever mounting plate you are using with a separate wire.

I've tuned a lot of CB antennas with NEJeep folks in the past dozen years...
99TJ Tummy Tuck and SYE, Front D30 with alloy shafts, Detroit locker 4.56, Rear D44, ARB locker 4.56.  Detoursusa.com Rear bumper, Superwinch EP9000 Front Cage



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Offline JeepinMaxx

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Re: CB troubles
« Reply #3 on: May 23, 2017, 10:05:35 PM »
Here is the ideal CB Antenna installation on a Wrangler right above the right tail light - this is what I currently use - make sure you put the washers in the positions shown in the pic


99TJ Tummy Tuck and SYE, Front D30 with alloy shafts, Detroit locker 4.56, Rear D44, ARB locker 4.56.  Detoursusa.com Rear bumper, Superwinch EP9000 Front Cage



"We don't need more gun control - we need ASSHOLE CONTROL"

Offline XtraChrisP

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Re: CB troubles
« Reply #4 on: May 24, 2017, 06:31:32 AM »
I would remove and return the quick disconnect too. I got one and it fell apart after about a week and a half
2005 LJ Wrangler Unlimited Rubicon, 5.5 Clayton Long Arm, 1.25" JKS body lift, 35" Mickey Thompson MTZ

Offline ClimateCreator

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Re: CB troubles
« Reply #5 on: May 24, 2017, 10:51:33 AM »
Mine works great. I just had to grind/clean the underside of bracket and inside hole. Oh and make sure the antenna parts are in the right order....nylon washer etc.
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91 YJ (our 20 y/o dd), 93YJ (our 18 y/o dd), 93ZJ Spare (often needed...it's a yj thing) and our 2013 jk dd

Offline BC Miller

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Re: CB troubles
« Reply #6 on: May 24, 2017, 11:01:27 AM »
The "hot" part of the antenna is probably shorting to ground.  Make sure you're using the nylon washer as shown in the pic above.
2013 Rubicon, 2dr, 4.5" Teraflex lift, 35" Procomp Xtreme MT2 tires, Smittybilt winch

Offline BC Miller

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Re: CB troubles
« Reply #7 on: May 24, 2017, 12:12:20 PM »
This is what I'm talking about.  Also, don't key the mic too many times with the SWR that high.  You'll blow the outputs of the CB.

2013 Rubicon, 2dr, 4.5" Teraflex lift, 35" Procomp Xtreme MT2 tires, Smittybilt winch

Offline Cwood429

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Re: CB troubles
« Reply #8 on: May 24, 2017, 06:23:35 PM »
Thanks for all the input! Here's the update:

Removed the spring and quick disconnect.

Removed the bracket and sanded powder coat from mounting bolts and antenna mount.

Reinstalled antenna with correct washer placement.

First test without Spare tire on mount and no antenna adjustment yeilded 1.2 SWR and 1.3 SWR on channels 1 and 40 respectively.

Remounted Spare tire and due to factory rim, the fiber from the tire makes contact with the antenna. As a result SWR jumped back to 2.6. After multiple trips in and out of the vehicle to tune the antenna, I now rest at 1.4 and 1.5 SWR on channel 1 and 40 respectively. I attempted a radio check with another club member and got clear reception on channel 4 out to about 1 mile.

Do these numbers and range sound adequate for trail use?

Thanks again
2013 JKUS
nada

Offline Gorilla_Skater

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Re: CB troubles
« Reply #9 on: May 24, 2017, 06:27:48 PM »
Those numbers are good! Will definitely work well on the trail. Check out this thread...

http://forum.northeastjeep.org/index.php?topic=36459.0
1993 YJ  6" lift on 35" Goodyear MTR's, 8.8 rear w/ Spartan, Dana 30 w/ Lockrite & 4.10's
1999 Dodge Ram 2500 8.0L V10 Tow Rig

1N73LL1G3NC3 15 7H3 4B1L17Y 70 4D4P7 70 CH4NG3 ~573PH3N H4WK1NG