This game was found in Radio Electronics from the 90s. The components used are common except some that are from that time and that can no longer be found easily.
Below are two frequency filters for receivers using crystals. The crystals must have the frequency of...
This circuit from a 90s Popular Electronics, decodes the old analog TV signal. It works with a...
This circuit is from a 1968 documentation using one of the first integrated circuits available at the...