My antenna is hung between the tail and the fuselage, I have tried two headsets my self with it and about 3 or 4 other Pilots from my company have had the same problem as well, its been tested at least 4 times that I can remember but it bench tests ok apparently? They decided to replace it at one point but one guy flying it said it worked fine so they didnt.(Belive me it dont I say but one good report seems to be enough but 10 bad ones is not quite enough ! )
Anyway point is I really dont know much about the subject so Ill do a bit of reading.
Cheers pistinaround.