magnetic cb mount?

[CrackedCranium]

HeyCB radio guy,
I built a roofrack with a place for the magnetic antenna to sit.
Put now I am having reception and broadcast problems. Any ideas to why would be greatly appreciated . I am including a photo.

 

[Cosman]

Have you checked it with an SWR meter? My guess would be is that you aren't getting a good ground on the Antenna now. Something to do with ground plane that the SWR meter can help you figure out. if you put it back on the roof. does it work better?

 

[CrackedCranium]

It works better but not great. But I think that as something to do with the fact that the magnet doesn't sit down flat between the raised ribein the roof

 

[CrackedCranium]

Thanks for the help there. I had the wrong antenna on for this application, I was using a base loaded antenna, and I needed a no ground plane antenna. I swapped them out and it works fine. The swrs are at 1.5 high and low.