Hi Franco, this is part High Freq. from main Resonant Frequency of Gold. But here problem is that max. operation Output Freq (OSC) of cd4046 is up to 1.6 Mhz. (Datasheet)
If I not know wrong OSC of 4046 + input Freq OSC from Stylus Antenna make Mix and giving ference freq for Output (for example 1Khz), so like Radio mixer.
If is so OSC from CD4046 not will High Frequency 9 or 10 Mhz .
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