Suggested by a 1990 book for amateurs, this circuit makes use of an integrated component that is not common today. It converts signals from one band to signals in a 10.7 MHz band below.
We found this circuit in a 1996 publication. The circuit uses components that are still common. The...
This distorter for musical instruments was found in a 80’s Hands On Electronics. The transistor can...
This amplifier circuit for listening was found in a book by Hugo Gernsback from 1960. The...