Lrl from Italy

[Pahom]

Originally Posted by FrancoItaly

You are right, you could also use the "ready oscillators", but I find that the quartz version is the simplest, even most oscillates even without the capacitor between the emitter and the base of the transistor, in the range 2 - 10 Mhz in my opinion is the best choice. The same scheme also works with 20 Mhz, but it is more critical, also because we are at the frequency limit for quartzes that work in fundamental (harmonic). Furthermore it is necessary to have a waveform as distorted as possible, to have many harmonics and a signal of small amplitude in order not to radiate towards the sensor stage.

Good afternoon Franco! Reading about a new project at 20 MHz, you constantly repeat that the waveform at the output of the generator should be DISTORTED as much as possible. Is this so or is it a translation error?