The Marconi Coherer
While reading about the early days of radio, I came across this schematic of a Guglielmo Marconi receiver, said to be similar to the one that copied his famous first transatlantic message on 12 Dec 1901.
While reading about the early days of radio, I came across this schematic of a Guglielmo Marconi receiver, said to be similar to the one that copied his famous first transatlantic message on 12 Dec 1901.
Unless you have a crazy uncle in the hobby, you may not know much about Amateur Radio. Does it still exist?