It was used as a radio transmitter from 1903 until the 1920s when it was replaced by vacuum tube transmitters, and it was one of the first technologies used to transmit sound (amplitude modulation) by radio.
It was used as a radio transmitter from 1903 until the 1920s when it was replaced by vacuum tube transmitters. It was one of the first technologies. These first technologies were used to transmit sound (amplitude modulation) by radio.