Came across an RS-6 system which was (according to the Internet) used on B-47 and B-52 aircraft for survival. Seems like a neat 4 piece, tube radio with 3-15Mhz receiver and crystal controlled 2E26 transmitter with a little fold out CW key. Does anyone have any experience with them ? How about the RBZ receiver, anyone have experience with them ? 73 Kees K5BCQ