"Cecil Moore" wrote
Reg Edwards wrote:
A coil 6.6" long, 6" diameter, 26.5 turns, has L = 68 uH, Q = 500
at
3.8 MHz, and self-resonant frequency = 9 MHz.

Wouldn't mounting the coil four inches above a GMC pickup
ground plane reduce the Q and the self-resonant frequency?
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Cec,

Very likely. But not very much.

It would not be the self-resonant frequency any more. The srf never
changes. And neither does the intrinsic coil Q.

We must be careful with our descriptions. Slackness leads to
misunderstandings, arguments and fights.
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Reg