This circuit was found in a1980s Motorola documentation. The integrated circuit is from that time. The frequency depends on the crystal.
This two-transistor circuit is from a Radio Electronics magazine from April 1965. The transistors are...
This low power circuit for the FM band was found in a spy book from the 90s. The tunnel diode is...
We found this circuit in a Gernsback documentation from 1960. The circuit is intended for...