CB RF interference with engine off

thekidwithquestions

thekidwithquestions

Acquiring Jeep funds...
Supporting Member
Joined
Feb 25, 2021
Messages
1,492
Location
NC, Wake Forest
this is with everything off, the CB is wired straight to the battery, red to + terminal and black to - terminal



If I leave everything normal, except take the antenna out, I have no noise, just a soft fuzz. Does that mean my antenna is bad?
 
have you tuned the antenna? It's kind of a pain in the ass as you can only get it close to good on an SWR meter. Where is the antenna mounted? That makes a differenc as well. What antenna do you have?
 
MutantNinjaTJ said:
have you tuned the antenna? It's kind of a pain in the ass as you can only get it close to good on an SWR meter. Where is the antenna mounted? That makes a differenc as well. What antenna do you have?
Click to expand...
I have tuned the antenna as best I can (about 1.3 on channel 20) its mounted on the drivers tail light, its grounded perfectly. its a Firestick 2' with a Uniden pro 510xl
 
If you get noise with the antenna on and none with it off it means the antenna is picking up noise. A bad antenna doesn't make noise, it isn't powered or anything. You simply have an RF source nearby that you are hearing. Arcing power lines, who knows? Forget about it or drive to the mall and see if it's still there.
 
  • Like
Reactions: thekidwithquestions
That noise sounds digital to me. If you have a smartphone - or even a dumbphone - remove it from the area and re-check. Probably won't make any difference - the CB shouldn't pick that up that loudly.
 
  • Like
Reactions: thekidwithquestions
thekidwithquestions said:
have tuned the antenna as best I can (about 1.3 on channel 20) its mounted on the drivers tail light, its grounded perfectly. its a Firestick 2' with a Uniden pro 510xl
Click to expand...
Thats the same set up as mine but i have the 3' antenna to clear the top by a few inches, it will only be so good, but not the best. Everyone is going to hand held dual band UHF anf VHF (HAM) radios, you can pick one up for less then a hundie.
 
Top Bottom
Back