The FM transmitter circuit itself is based off one of [Art Swan]’s builds, but instead of the solderless breadboard construction you would expect to find in a small demo circuit, [Angelo] went ...

Spark transmitter circuit diagram Compared with the primitive transmitter, our receiver is a more up to date design realised in ‘all solid-state’ electronics. A telescopic antenna picks up the ...

Given that a well-maintained transmitter should show such stability, many transmitters receive scant attention during the broadcast day.