Cb problems - Jeep Wrangler Forum
Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > General Jeep Discussions > Communications and Electronics

Join Wrangler Forum Today


Reply
 
Thread Tools

Please support our sponsors and let them know you heard about them on WranglerForum.com
Old 08-23-2013, 09:47 PM   #1
Jeeper
 
vacca foeda's Avatar
 
Join Date: Dec 2011
Location: St. Pete/Tampa
Posts: 639
Cb problems

So I've got my cb installed, am getting good reception when the jeep is off, but when I turn it on, I'm getting a bunch of noise. (base signal strength goes from 2 bars to 5 bars on the display)

My set up is a cobra 75 mounted behind the glovebox wired both power and ground to the battery (same problem when run to the spod), 18' fire ring coax run to a 3' fire stick firefly mounted on a rugged ridge spare tire mount. I've ground off the paint at the connection points, and a ground wire run from the bottom bolt of the mount to one of the tiedowns in the trunk

Anyone have any ideas as to where my problem is?

vacca foeda is offline   Quote Quick Reply
Old 08-23-2013, 09:52 PM   #2
Jeeper
 
vacca foeda's Avatar
 
Join Date: Dec 2011
Location: St. Pete/Tampa
Posts: 639
Also, the swr is at about 1.3-1.6 on channels 1-40

vacca foeda is offline   Quote Quick Reply
Old 08-24-2013, 02:54 PM   #3
Knows a couple things...

WF Supporting Member
 
Jerry Bransford's Avatar
 
Join Date: Nov 2005
Location: Escondido, Calif.
Posts: 33,146
Images: 2
Just to confirm, the CB is being powered by connections that attach directly to the battery? Are you using an adequate/large enough gauge wire between the battery & power leads from the radio? I'd probably use 14 gauge wire for that connection.

If all that is ok, what model year Jeep do you have? If it's an older model Jeep with a distributor, are you running low-restance aftermarket ignition wiring or non-resistor spark plugs?
__________________
When you have a choice, buy American.

Jerry Bransford is offline   Quote Quick Reply
Old 08-24-2013, 03:14 PM   #4
Jeeper
 
vacca foeda's Avatar
 
Join Date: Dec 2011
Location: St. Pete/Tampa
Posts: 639
2011. It's the power wires that came attached to the cb
vacca foeda is offline   Quote Quick Reply
Old 08-24-2013, 03:19 PM   #5
Jeeper
 
Join Date: Apr 2013
Posts: 101
Check the gauge on the given power lines. Thats the only problem I can see so far.
labmule is offline   Quote Quick Reply
Old 08-24-2013, 05:47 PM   #6
Jeeper
 
vacca foeda's Avatar
 
Join Date: Dec 2011
Location: St. Pete/Tampa
Posts: 639
I'll give that a shot when I get back to town. Thanks guys!
vacca foeda is offline   Quote Quick Reply
Old 08-31-2013, 03:16 PM   #7
Jeeper
 
skeeter's Avatar
 
Join Date: Dec 2006
Location: Spokane, Wa.
Posts: 3,875
Send a message via Yahoo to skeeter
Don't run your ground directly to the battery. Run it to the chassis if possible.
__________________
"But it does me no injury for my neighbour to say there are twenty gods, or no god. It neither picks my pocket nor breaks my leg." - Thomas Jefferson, Notes on the State of Virginia, 1782

Arguing with a truck driver is like wrestling with a pig in mud, eventually you realize the pig enjoys it.
skeeter is offline   Quote Quick Reply
Old 08-31-2013, 03:33 PM   #8
Knows a couple things...

WF Supporting Member
 
Jerry Bransford's Avatar
 
Join Date: Nov 2005
Location: Escondido, Calif.
Posts: 33,146
Images: 2
Quote:
Originally Posted by skeeter View Post
Don't run your ground directly to the battery. Run it to the chassis if possible.
All of the Jeep's electrical groud connections eventually return to the battery's negative post. Connecting the CB's black negative power lead to the battery's negative post will cause zero problems. It isn't as easy to connect the CB's negative power lead to the battery's negative post but doing so will cause no problem for the TJ. Antenna system ground connections are different, they should't go to the battery but it's fine for both 12v DC power connections to be connected directly to the battery.
__________________
When you have a choice, buy American.

Jerry Bransford is offline   Quote Quick Reply
Old 08-31-2013, 03:56 PM   #9
Jeeper
 
skeeter's Avatar
 
Join Date: Dec 2006
Location: Spokane, Wa.
Posts: 3,875
Send a message via Yahoo to skeeter
I've had issues with noise that went away after moving the ground to the chassis from the battery post.

__________________
"But it does me no injury for my neighbour to say there are twenty gods, or no god. It neither picks my pocket nor breaks my leg." - Thomas Jefferson, Notes on the State of Virginia, 1782

Arguing with a truck driver is like wrestling with a pig in mud, eventually you realize the pig enjoys it.
skeeter is offline   Quote Quick Reply
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Jeep Wrangler Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off




Download our Mobile App

» Network Links
»Jeep Parts
» Featured Product

All times are GMT -5. The time now is 03:59 AM.



Jeep®, Wrangler, Liberty, Wagoneer, Cherokee, and Grand Cherokee are copyrighted and trademarked to Chrysler Motors LLC.
Wranglerforum.com is not in any way associated with the Chrysler Motors LLC