I have a few SCR-522 units, also some ex-pmr gear that has invertors and AM modulators that would make ideal parts for either older mil gear or h/b AM sets. Pictures at: www.qsl.net/g4bxd/qmstores.htm will sell or trade ?? w.h.y. ?? cheers, Ben G4BXD (England.... just in case the G callsign not known)