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.
This 1988 documentation circuit includes a charger and an inverter to power a small fluorescent lamp. The...
This circuit can act as a receiver for the transmitter of the previous circuit. We found it in...
The power source shown for powering for small TTL circuits was found on a Radio Electronics...