Found on an 80's Elektor, this circuit uses common components, being the diode a general purpose germanium. The coils select the frequency range of the indicator that reaches 60 MHz.
This circuit was presented in a January 1990 Radio Electronics magazine article as part of a home...
This nonlinear gain circuit was found in a 1965 Electronic Design. The configuration can be used...
Found in a 1965 Electronic Design, this circuit divides the frequency of a 50 MHz signal by 2. The...