Found in a 90s ARRL Handbook, this circuit is intended for the production of signals in the side bands for transmission in SSB.
Using red LEDs with ignition voltages of the order of 1.5 V we can make a multiple voltage...
The frequency range of this generator depends on C which can have values between 1 nF and 1 uF....
This circuit is from a 1972 Motorola publication. The used transistor can still be found, but it...