A Million-Watt Naval communication transmitter

This article describes one of the world´s most powerful radio telegraph transmitters. Recently built for the United States Navy, it is conservatively rated at 1,000-kw output over the 15- to 35-kc frequency range. Its use will ensure reliable communication with the United States Fleet even when high-frequency services are interrupted by magnetic disturbances. Unique features include the first use of super-power electron tubes having a power gain of at least 250; 10-microsecond fault protection; a variable master oscillator with 0.001 percent frequency stability, and provisions for frequency-shift teletype signalling.