This circuit is from an old American publication. It divides a 40 to 60 MHz TTL signal by integer values such as 2, 3 or 4. The circuit must be powered by 5 V.
The circuit shown is from an old English publication from 1965. We can adapt the circuit to work...
January 2017 - STMicroelectronics' new TN4015H SCRs with 40 A currents and high temperature...
This micro FM transmitter uses a tunnel diode as an oscillator. I found it in an English...