Marconi’s First Radio Transmitter
![A small table with radio equipment and wires.](https://www.communitystories.ca/v2/marconi/wp-content/uploads/sites/166/2023/07/SGT.jpg)
Wdwd. April 20, 2016. Location unknown. “Marconi’s First Radio Transmitter.jpg.” Wikimedia Commons.
“Marconi’s first radio transmitter.jpg” by Wdwd is in the public domain.
From left to right, are a spark-gap transmitter, an induction coil, and a telegraph key. A copper sheet was hung above the table to act as an aerial. On the floor is the battery that powered the devices. Spark-gap transmitters interfered with nearby radios, so manufacturing them was banned in 1929. Using them was—except in emergencies—banned in 1934.