Cb antenna location radio interface?

[21hydrobluerubi]

So I’m getting ready to install a cb.
I’m going to fab up a mount like this cooltech one. I like the idea of putting the antenna on the passenger side like in the photo.
so my question is, is this a bad location? Will the output from the cb harm the radio being so close to the radio antenna?

Sponsored

 

[ArmyMP]

Mine

 

[Radio Guy]

Wow, that CB antenna is so big it ate the stock AM/FM antenna!

Mine

 

[ArmyMP]

Wow, that CB antenna is so big it ate the stock AM/FM antenna!

The antenna is AM/FM and CB. Using the stock location

 

[OHJeeper]

@Radio Guy is the expert, but I had much better luck moving the antenna one bolt forward on the cowl, nearer to the hood. I am using GMRS, but I think the basic idea is the same: get it a little more "open" and with a mildly better ground plane. The cowl is plastic so it does nothing for ground plane. Moving forward allows some of the hood to help out...

 

[Radio Guy]

@Radio Guy is the expert, but I had much better luck moving the antenna one bolt forward on the cowl, nearer to the hood. I am using GMRS, but I think the basic idea is the same: get it a little more "open" and with a mildly better ground plane. The cowl is plastic so it does nothing for ground plane. Moving forward allows some of the hood to help out...

Mounting location depends on if the antenna will match and how much range you need. If the antenna matches ok and your not trying to talk 30mi down the road then its all good. I have repeaters that can be 75mi or more away and need all the range I can get.

In one of these threads I had pictures of how I coated the underside of the plastic cowl pieces with wide aluminum tape that ground to the mounting bolts. That extends the ground plane around the cowl area and is adequate for UHF or GMRS.

 

[21hydrobluerubi]

Will having the cb antenna that close, or even moving it a bolt forward cause any interference with the jeep radio when the cb transmits.
it’s just a small cobra unit.

 

[chorky]

Spend some time over here and read a lot of what daveindenver has to say. he is full of great information.

https://expeditionportal.com/forum/threads/gmrs-cb-and-am-fm-antennas-in-close-proximity.217489/

in short though, yes I think since you are running a small whip, that could contact the radio antenna when you transmit, it could cause damage to the radio. How likely that is however, who knows...

 

[Timoleon]

I decided to mount a ham radio in the truck. I was trying to figure out where the best place to mount it was. I opted for in the back of the truck but wanted to keep it closer to the cab. So, I mounted it on the front of the bed. The Tonneau cover [not pictured] fits over the mounting (with a slight mod to the front of the cover) Here is a picture of the mounting..... Granted, this isn't a CB antenna, but the mounting could be the same (although the antenna does work the CB band of frequencies).

Sponsored