Instructions for learning international morse characters - USA Voorschrift, Technical Manual, 11-459 Electrical communication systems equipment - USA Voorschrift, Technical Manual, 11-487 Reel unit TL-31 - USA Voorschrift, Technical Manual, 11-362 Sound recording sets AN/UNQ-1 and AN/UNQ-1A - USA Voorschrift, Technical Manual, 11-2522 Radio set SCR-694-C - USA Voorschrift, Technical Manual, 11-230C Radio set SCR-300-A - USA Voorschrift, Technical Manual, 11-242 Radio set SCR-502 - USA Voorschrift, Technical Manual, 11-256 Radio sets SCR-193-A, SCR-193-B, SCR-193-C, SCR-193-D and SCR-193-E - USA Voorschrift, Technical Manual, 11-273 Radio set AN/CRT-2 - USA Voorschrift, Technical Manual, 11-512 Radio sets SCR-509-(*) and SCR-510-(*) - USA Voorschrift, Technical Manual, 11-605 Radio set AN/TRC-6 (XC-2) : preventive maintenance and auxiliary equipment - USA Voorschrift, Technical Manual, 11-633 Radio receivers BC-312-(*), BC-312-(*)X, BC-342-(*), BC-314-(*) and BC-344-(*). - USA Voorschrift, Technical Manual, 11-850