This circuit from the 60's uses germanium transistors of the time. Listening is done on high impedance headphones.
We found this circuit in the 1974 Ferranti transistor manual. The transistors are general purpose, and...
The RC network of this circuit determines the operating frequency. The emitter-coupled circuit was found...
This circuit can be used as a receiver for the CIR10534 transmitter or others described in this...