This is the traditional circuit from the 1980 racing video game with the AY3-6603-1 that we also published at the time in our magazines. This circuit is from the Radio Electronics magazine of August 1980.
This voice scrambler and descrambler circuit was found in a Radio Electronics from July 1963....
We found this small FM transmitter in an Australian publication from 1991. The 3-transistor...
This single channel circuit can be used with one of the many receivers that we describe in this...