radio transmitter

Encyclopedia Article


A device that emits electromagnetic waves. These waves can be used to transmit sound at different frequencies, and the sound is picked up by radios tuned to those frequencies. The radio transmitter was first created in 1887 by German physicist Heinrich Hertz and the first music signal transmitted via radio waves was in 1906 in Boston, Massachusetts. Radio transmitters are still in use today, especially in remote areas with limited telephone capabilities.

Photo Credit: 

"The radio transmitter on top of Dundee Law, August 16, 2014" by spodzone is licensed under CC BY-NC-ND.