Found on 80's Popular Electronics, this circuit uses an uncommon integrated today. Programming is done by a DIP switch.
This 1-transistor circuit appeared in a February 1962 Radio Electronics. The coils for the...
This circuit came out in the American magazine Electronics Now, in a 1993 issue. The magazine no...
This antenna tuner was found in a 1995 publication in the 1993 Electronics Hobbyists Handbook. The coil...