Out of what materials can I make a spark gap? I am trying to make a Spark Gap Transmitter for Morse code- I have already made a very rudimentary telegraph using copper wire, sheet metal, 2 D batteries, and an iron nail (coiling insulated wire around it). It‘s range was about 1 foot (LOL). I digress. What materials can I use for the spark gap?
The FCC will shut you down - and may fine you. A spark gap transmitter generates a signal over a very wide-band of frequencies. What you are producing is interference.
