Remote control A-B switch box , Radio Shack / Archer 15-1957, control and power
A. F male - Rg - BNC male. c. 2x - BNC barrel f-f. b. Bnc male - F male. f. BNC male - RCA female. g. BNC male - RCA male. adaptors to connect the f connectors to different signals via adaptors to the AB switch as required.