Found in a publication by Gernsback from 1960, this circuit uses germanium transistors of the time and commercial coils. It can be changed to operate with modern transistors and other wavebands.
This circuit for experimental radios and other applications is from a documentation from the 50's....
This circuit was found in a 1987 edition of the United States' Hands On Electronics magazine. The...
This configuration was found in a 1970s American magazine. The circuit uses both CMOS logic and...