This receiver employs two dual triode valves. Receiver is from a 1949 Radio Electronics. Power supply not provided.
This 80s signal follower makes use of an audio amplifier of the era. The circuit can be adapted to...
This circuit from Ferranti was released in 1969. It makes use of the company's transistors that admit...
This transmitter operates in the FM band emitting beeps that can be picked up on a common radio at...