TY - GEN TI - Admiralty handbook of wireless telegraphy: vol. II U1 - 621.382 PY - 1938/// CY - London PB - His Majesty' Stationery Office KW - Wireless telegraphy N1 - Spark Transmitter (Section-A) Thermionic Valves (Section-B) Reception of Electromagnetic Waves (Section-D) Amplification-Receiver Design (Section-F) Power Supplies (Section-H) Valve Transmitters (Section-K) Radio-Telephony-Sound Reproduction (Section-N) Propagation of Electromagnetic Waves (Section-P) Aerials, Feeders, Directional Arrays (Section-R) Direction Finding (Section-T) R/F Measurment-Wavemeters and Oscillators (Section-W) ER -