Category:Poulsen arc transmitters
This category is for arc converter radio transmitters, an early obsolete type of transmitter that was used from 1903 to the early 1920s. It includes the Poulsen arc transmitter and the many variations that were made on it.
Pages in category "Poulsen arc transmitters"
This category contains only the following page.
Media in category "Poulsen arc transmitters"
The following 41 files are in this category, out of 41 total.