MOTOR-GENERATOR ON STEROIDS THAT SENT SIGNALS TO UNDERWATER SUBMARINES THROUGHOUT THE PACIFIC OCEAN. The signals were heard simultaneously in Long Island New York and in Bombay India.
Ernst Alexanderson, an engineer for the General Electric Company, developed the radio alternator between 1906 and 1918. The Alternator remained the only practical method of generating large amounts of radio frequency energy until the invention of the vacuum tube.
Ernst Alexanderson, an engineer for the General Electric Company, developed the radio alternator between 1906 and 1918. The Alternator remained the only practical method of generating large amounts of radio frequency energy until the invention of the vacuum tube.
