Eugene wrote: > Ok, so if I really want one of these, I'll have to find an 800 Hz > supply. Plus, you will need the RU-18 or RU-19 two-receiver system that almost always accompanied a GP-7. With one of the two receivers, you'll need a ZB-2 or ZB-3 VHF homing adapter. Don't forget the ABK-* Mark III IFF transponder. :-) Mike / KK5F