This circuit was obtained from a Linear Technology manual from the 90's. The integrated circuits are from the time and could possibly be tested as modern equivalents.
This circuit appeared in the June 1990 issue of Radio Electronics magazine. Integrated circuits must...
Lockout shooting, due to the incidence of light, can be achieved with the circuit in the figure. In...
This circuit can function either as a crystal or galena receiver with a pre-amplifier using a FET...