This circuit for the 40 MHz band was published in Radio Electronics magazine in December 1957. Its purpose was to monitor the signals of the Russian satellite launched at the time.
We found this circuit in an American documentation. The power of the load, in this case,...
This flip-flop circuit is from a September 1985 issue of Radio Electronics magazine. It generates...
The circuit is from an Electronics Hobbyst Handbook from the 90s, being valid for panels of the...