For Sale: Collins 51X-2B (mil R-1123A-AN/ARC-73) VHF aircraft receiver, 108-151 Mhz, .5 Mhz channels, 28 VDC 614U (mil C-4074) control box 790C-1 rack, junction box (not Collins), connectors, cables, original maintenance manual. Reported working when acquired, but not tested, sold "as is". U$S 65.00 plus S&H Thanks JoeOrgnero VE7LBI