Hi All,
Thanks for the comments on Gold plating a tank coil.
I think one thing that was overlooked is Gold plating is usually extremely
thin, on the order of 1 or 2 microns, or 0.04 to 0.08 mil.
At HF frequencies the skin effect depth is orders of magnitude
greater than this, perhaps 2 to 4 mils, so the RF current stays 99% in the
more
conductive copper underneath the gold plating. The Gold plating does indeed
protect the surface from tarnish, and would have an almost
negligible effect on the RF resistance of the tank coil at HF
frequencies.
73 - Todd WD4NGG
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