Quote:
Originally Posted by FrancoItaly
It is not an error, a distorted signal means that it contains harmonics of higher frequency, in our case: fundamental = 20Mhz, second harmonic = 40Mhz, third = 60Mhz, fourth = 80Mhz, fifth = 100 Mhz, always with decreasing amplitude. The L1 / C10 resonant circuit is tuned to one of these harmonics (I think 80 Mhz or 100 Mhz) and this makes the sensor stage more sensitive.
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Thanks! Another question, in the circuit display 1, the capacitor c1 is indicated 10mf is it an electrolyte? The previous version specified 0.22mF.