With this circuit, signals in the range of 10 kHz to 150 kHz can be received at close to 4 MHz from a shortwave receiver. The circuit is from a 303 Circuits from the 90s.
This was the original title given by the publication of the 80s in which we found it. Similar...
This circuit is from the 1983 Intersil manual. The display is a 4.5-digit LCD, and the power...
This V/F converter was published in the June 1991 issue of Radio Electronics magazine. The...