This converter has coils according to the reception and converted frequency bands. We found it in the October 1989 Radio Electronics magazine in an article that teaches its construction.
Found in Motorola documentation from the 1980s, this circuit employs an integrated device from...
This signal strength meter (S-meter) was found in a 1975 amateur radio publication. We can use...
The circuit shown in the figure is indicated for alternative energy sources, such as those...