This is another of the Star Trek red alert circuit that you can find on this site. We took this version from an English publication from the 80s.
We found this circuit in a 1983 English magazine, but it can be easily assembled today, as all...
This interesting Walk-talkie circuit for the FM band using a tunnel diode appeared in the Radio...
This is another of the Star Trek red alert circuit that you can find on this site. We took this...