Pulsing sound from CB
#22
JK Enthusiast
It's only when the key is in the ignition. While the engine was running, I disconnected the coax and the pulsing sound went away.
#23
JK Enthusiast
#24
JK Jedi
Join Date: Aug 2007
Location: Kenai Peninsula, Alaska
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I doubt that will work in his case as they sound went away when he disconnected the coax. His antenna is picking it up. You have to find the offending source and put chokes on the power lines or ground whatever it is a little better. It's not as easy with these new vehicles, but in the old days we would just start removing fuses till the sound went away. This was a good way to figure out what was causing the noise.
#25
JK Enthusiast
Join Date: May 2010
Location: Dayton, Ohio
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Is the cb the only antenna/long run of NON STOCK wire in your jk?
Post a pic or 2 of your antenna mounts from different angles for me if you can. also is your power for the cb ran DIRECTLY to the battery?
Post a pic or 2 of your antenna mounts from different angles for me if you can. also is your power for the cb ran DIRECTLY to the battery?
#26
JK Enthusiast
I can post pics this evening. I'm using the CoolTech license plate antenna mount. Coax running along the driver's side floor. CB is over the rearview mirror. Only non-stock wiring is in the engine bay for my Rigid led lights. Wiring is in the engine bay, swiches wired at the A-pillar.
#28
JK Enthusiast
Could be very possible with the cable. I could have kinked it when running it through the tail light into the Jeep. I couldn't get the plastic cover off on the inside of the Jeep behind the tail light so I pushed/pulled the cable through. I don't have as much coax left over as I expected for a 2-door, so it could be coiled up in that plasic cover. I will check that this weekend. Also, I didn't sand the inside of the frame when I attached the CoolTech bracket, as I didn't expect for the inside panel to be painted. I'll run sandpaper over that area as well just to make sure I have a good ground.
Last edited by CrystalRubi; 11-30-2011 at 03:16 PM.
#29
JK Newbie
My power and ground come directly off of the battery, and I was still getting the pulsing issue. What cured my problem was getting a much better radio. I was running a small Uniden , then a small Cobra. After I moved up to a Cobra 29 LTD my noise went away. As usual, the heavier the electronics package, the better the radio. The smaller radios barely weighed a pound. The Cobra 29 LTD weighs almost four times what the small radios weighed. The same theory goes for computers, stereo equipment, and even battery chargers. I was taught this lesson by my son, who was a CT, in the Navy, and later owned his own computer repair business. He is now the IT manager at a major grocery store chain, in my area.
#30
Showbox jiofi.local.html tplinklogin from the battery through the foam-fulled hole in the firewall near the passenger front door. Now I notice that with squelch down a bit, I hear a light "pulsing" sound about every second. I took my ground from a bolt by the driver's left foot on the outside wall that appeared to be a ground point. The antenna is the stainless-steel job from Chadd's Ford Electronics sold through Quadratec and is grounded through the two new replacement bolts.
Any ideas what I'm hearing? Possibly electrical interference from the engine bay, from running the power along the right side of the engine bay then to the positive terminal? Normal background artifacts?
Thanks
Any ideas what I'm hearing? Possibly electrical interference from the engine bay, from running the power along the right side of the engine bay then to the positive terminal? Normal background artifacts?
Thanks
I just turn the squelch to get rid of it and all is well (except shifting into 4-Lo - makes a racket for a second).
Last edited by martinoermando; 05-18-2020 at 12:35 AM.