"Pilgrim"
"Steve Terry"
"Sandi"

Tin has a much lower conductivity than copper, and as RF travels on
the surface of a conductor, it would attenuate RF and high frequency AC


Is that why most, but not all, teflon insulated wire was silver plated?


** No.

Teflon coated wire intended is for high temp applications.

Silver has a much higher melting point than tin ( just a tad below copper)
and is more corrosion resistant too.



...... Phil