Electrical Terminals
How far can an Electrical Spark create interference?
A High Freq. 4,000v arc (several mA) with close terminals.
It creates interference on TV’s (bad) @ 60′ and audio speakers too.
Spark transmitters were used for global transmissions in the early days. They were often still in use as backup transmitters in ships, up into the 1950′s. The Titanic was spark transmitter equipped.
The type of spark you are using broadcasts over an extremely wide frequency range, as you have found out.
If you continue to use it, and create havoc with neighbours’ TV’s, radios etc., you may end up with the authorities knocking on your door. Watch out!
Spark transmitters used technology that allowed them to be used because they could be controlled to limit the bandwidth and frequency of their output. They became very efficient, but could not match the performance of thermionic valves, once valve technology was perfected.
Spark transmitters could be used only for Morse code transmissions, not voice.
002. Terminals: Basic overview of aircraft electrical terminals
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