We find this circuit in American documentation from the 1980s. It consists of a frequency folder using a varicap. The capacitors and coils depend on the frequency of operation.
The integrated circuit used is a voltage reference from Motorola. This configuration was obtained in...
This simple 1-transistor MW radio for listening on the phone was found in a Japanese magazine in...
The TTL circuit we present is for recreational purposes, but that does not mean that it cannot serve...