This sophisticated remote field strength meter circuit was found in a 73 magazine for radio amateurs from the1990s. The circuit measures signals in the 1650 kHz range.
We found this circuit of a transistor siren in a recent English publication. All components are still...
Electronics offers endless possibilities in terms of games. For those who like this type of...
Found in a magazine 73 for radio amateurs, this circuit has two settings, one for the interval and the...