Radio sets SCR-193-A, SCR-193-B, SCR-193-C, SCR-193-D and SCR-193-E - USA Voorschrift, Technical Manual, 11-273 Test sets 1-61-A, 1-61-B and 1-61-C - USA Voorschrift, Technical Manual, 11-346 Amplifiers BC-1388, BC-1388-A, BC-1388-B, BC-1388-C, and frequency amplifier AM-844/U - USA Voorschrift, Technical Manual, 11-2556
