This circuit was found in the January 1991 issue of Radio Electronics magazine. The circuit uses integrated circuits of the time and the coils depend on the tuned bands.
Found in Motorola's 1968 documentation, this control appears elsewhere in this section. The bridge...
This circuit was found in an 80's Radio Electronics. The circuit makes use of general purpose...
This circuit uses a 455 kHz IF coil and is suitable for SSB listening on a standard receiver. It...