Lincoln V-12
450 carrier-born aircraft overfly the USS Missouri during the Japanese surrender ceremony, 2 September 1945
Most people think of radio receivers when thinking about radio, but transmitters are the other half. This is the AN T-409: 2000 watt, twin sideband, multiplex, multi-channel HF (2-30 mHz) transmitter. It can be configured to have 10 channels preset for fast channel switching, with 4 voice channels (2 on each sideband, 3 kHz each) or can be configured to 16 RTTY (teletype) channels in place of voice (up to 64 RTTY channels total). It was powered by 230V, 3-phase AC, and used mercury filled rectifier tubes. Often, the output would be feed to a 6,000 watt linear amplifier, about the same size as this. It was normally used for long distance communications such as California to Hawaii, Hawaii to Philippines, etc. In the Air Force (1961 - 1965), I taught the operation, maintenance and repair of this one, along with the AN R390A receiver, and some other equipment.
