100 kHz VCO (CB21489E)

This voltage-controlled oscillator was found in a 1965 Electronic Design. Transistors are from the time, and modern equivalents can be tested.

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Three Transistors MW Radio (CB12261E)
This simple MW radio was found in a 1975 publication, but it can be mounted with BC548...
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This circuit is basically the same as the previous configuration (CB15616E) with a power stage with...
One Transistor Receiver (CB12824E)
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