doc, my buddy was pulling his hair out trying to stop the rf,
the a99 was mounted on a 21ft aluminum scaffold pole,
i isolated the a99 from the conductive pole then added 2 wire 1/4wave radials and an ugly balun at the feedpoint,
it gave increased signal strength comparable to a doubling of transmitter power on my jrc signal meter and a marked reduction in rf in my buddies shack, its hard to believe even for me and it was me that did it,
i had a brainwave and it seemd to work much better than anybody local expected, rf problem gone and locals saying your signal has gone up what have you done, nothing scientific just an observation from several local stations including my own, i dont get it so i went looking for answers,
i dont know how much this guy knows but he seems to agree, what i did met his criteria,
[FONT=Times New Roman, Times]Summary [/FONT]
[FONT=Times New Roman, Times]The cure for common mode problems caused by less-than-perfect grounds is inserting a 1:1 choke balun in the system at the antenna feedpoint. The coax should also be kept away from the radials as it exits the area of the radials and the antenna. An antenna with a poor ground using few radials cannot have a support mast grounded to the radial common point (at least it shouldn't if designed properly). There is no exception to this![/FONT]
http://www.w8ji.com/verticals_and_baluns.htm __________________
if hes got it right then the vast majority have got it wrong.
