Ok. Put up a A99. It's on 16' of 'top rail' post and about 32'6" to the tip.. The bottom of the mounting post is sitting on the ground. All my ham gear and power supplies are grounded to the house ground via an outlet and I verified by meter to be grounded to the ground rod and breaker box which is like 6' away from the radios. My HF gear has some QRM but the CB has it worse IMO, like constant 2-3 on the radio meter. I verified with meter the ground for the antenna connectors are grounded together as well between the radio and amp and everything else as well. I turned off all breakers in the house minus and hooked up 14ah gel cell from my go kit.. and with everything off I still get 2-3 on the static.. this was just the CB being powered.. amp was not on at all.. static present unless I undo the coax from radio.. Now keep in mind I live maybe 30-40' from the power lines here.. just norm ones, not the tall monsters.. you can see the power lines in the pic to the right and the transformer. My HF is an endfed with a 1-1 choke just outside the wall.. Also note I have not officially grounded the antenna post or antenna outside yet.. just propped the post up against the vinyl siding, used 4 mounting brackets, and put the A99 on top.. I do have 3 screws holding the posts together (shown in above pic), I can use one screw for a ground wire if needed.. or do I need to put a ground wire right on the A99 U-Bolt up at the top?? Thinking of a ground wire for antenna to run to a small ground rod in the dirt next the antenna mounting mast, and maybe try my HF choke 1-1 on the CB and see if that helps?? Any other things I can try that are free..