I have 3 UV-5R's

All three of them need their own *.img file because they have different firmwares.

They are all programmed with same channels and settings and all work fairly well for what I need.

However, believe it or not, one of them WILL NOT work with my J-Pole antenna. When I say 'will not work' I mean I can't hit any of the repeaters I normally use. It works perfectly, in fact really well with supplied antenna and with my dual band home made ground plane. With my MFJ power meter it also shows a full watt more output power than the other 2?

Is there anything in my programming the phone that could cause this?

Thanks,