Hi Gang - What is a Teletype REC 48 power supply (Navy type PP-1479/FGC)? Looks like it has too many transformer windings (+ a choke) to be just a loop supply. http://www.oldradiosnstuff.com/teletypewriter-power-supply-military-teletypewriter-power-supply-pp-1479-fgc cheers, Nick K4NYW www.navy-radio.com