Radio transmitter 149-A - USA Voorschrift, Technical Manual, 11-822 Radio transmitters BC-191-A, BC-191-B, BC-191-C, BC-191-D, BC-191-E, and BC-AA-191 - USA Voorschrift, Technical Manual, 11-800 Radio transmitters (Wilcox Electric Types 96-200A, 96-200B and 96-200C) - USA Voorschrift, Technical Manual, 11-802