Storage batteries for signal communication except those pertaining to aircraft - USA Voorschrift, Technical Manual, 11-430 Keyers TG-10-A, TG-10-B, TG-10-C, TG-10-D, TG-10-F, TG-10-G, TG-10-H and TG-10-J - USA Voorschrift, Technical Manual, 11-447 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