Lrl from Italy

[Pahom]

Originally Posted by FrancoItaly

Varying C1 changes the amplitude of the oscillator, however the waveform is not very important, an amplitude between 2 and 3 Volts from peak to peak is the optimal value. Too high a value would make calibration difficult. Keep in mind that the oscillator does not intervene directly in the reception of the "phenomenon", it only provides a carrier that will be somehow modulated by the phenomenon.

Thanks Franco Italy !!!! I have reached a pure sine wave. All the same, the transistor was the culprit. And the amplitude is 4.32 volts -124.0 ns. I?ll deal with the adjustment of the amplitude to 3 volts.