I am trying to lower the SWR on my antenna setup and I am trying to narrow down the problem.
Ground is good throughout the setup at DC, I do not know how to accurately check RF ground.
I have attached a cross section, basically I removed the AM/FM antenna and mounted the 3' CB antenna in it's place.
SWR is about 2.7 on 1 and 40 with a dip to 2.2 on 19. When I had a 5' antenna with the same mount I had about 1.8 across the band.
I am wondering if there is an issue with having a portion of the antenna beneath and in close proximity to the fender? I can make up a mount that puts the entire antenna above the fender, bur I'm not sure if it will make enough of a difference to be worth the effort.
Ground is good throughout the setup at DC, I do not know how to accurately check RF ground.
I have attached a cross section, basically I removed the AM/FM antenna and mounted the 3' CB antenna in it's place.
SWR is about 2.7 on 1 and 40 with a dip to 2.2 on 19. When I had a 5' antenna with the same mount I had about 1.8 across the band.
I am wondering if there is an issue with having a portion of the antenna beneath and in close proximity to the fender? I can make up a mount that puts the entire antenna above the fender, bur I'm not sure if it will make enough of a difference to be worth the effort.