40 meters band CW transmitter (CB8730E)

We found this circuit in a 90s 73 magazine for radio amateurs. The circuit has 3 W of power and can use modern equivalent MOSFETs.

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Light-controlled oscillator (CB7874E)
This circuit has the intensity of the signals controlled by the light that falls on the sensor....
Output Limited Oscillator (CB4176E)
The purpose of the diode in this oscillator circuit is to limit the amplitude of the output...
Ladder Generator (CB23757E)
We found this ladder-shaped signal generator circuit in Radio Electronics magazine from August 1966....