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.
We found this circuit in a 1986 documentation. It uses only LEDs, batteries, resistors and the...
This circuit is from a 1988 documentation, but uses components quite common today. The circuit...
This interesting high-quality amplifier configuration was featured on the cover of the June 1994...