Just a thought. The ladder is probably not grounded to the frame. (mine isn't) Ground braid from the ladder to the frame, about 5 turns,(6 inches in diameter), of coax where it connects to the antenna, Take the feed line braid off the frame and instead ground the radio, tuner, and anything else connected to the radio. Had that 40m problem on my Icom. Grounding fixed it.
Doc
|