I have the pilot's manual for the Lockheed PV-1 Ventura. It used a TA-12 transmitter and a RA-10B receiver, along with, in various possible installations, ARA, ATA, ABK, ABA, ASD, ZA, ZB, a radio compass receiver and a radio altimeter. As Slim Pickens might have said, you could have a pretty good time in Vegas with all that stuff. Wayne