This circuit uses an 18 MHz crystal to generate 36 MHz signals. We found it in an 80's documentation. The circuit has an input for frequency modulation.
This circuit of the 80s makes use of an operational one of the time. It can be designed with...
This transmitter, found in Raytheon documentation from 1957, has a range of a few meters. L1 can...
This electronic ignition for cars of the time was found in the Radio Electronics magazine of May...