TM 11-866.PDF  Manual for Radio Receivers, BC-779-A, -B; BC-794-A, -B; BC-1004-B, -C, -D; and R-129/U; Power Supply Units, RA-74-B, -C; RA-84-A, -B; and RA-94-A; Radio Sets, SCR-244-A, -B; SCR-704; and AN/FRR-4.  (Hammarlund Super Pro Receiver).  February 1948.

This file originally scanned and made available with the compliments of Phil Mills, W5BVB.