ferrite core for noise cancellation?

[Esteban]

Hi,

Maybe ferrite cores reduces the noise, but what about the capacitance?


I think this ferrite core must be in the middle way between the search coil and the main board.

[Goodrat]

Ferrite

What I did on my Badido was use a small elongated ferrite bead that had two holes side by side to provide common mode filtering on the receive wires. Probably only high frequency and I can't tell if it provided any benefit. But I left it in.