Clint,
About 20.5uH according to the usual formula for solenoid coils.
Steve G3TXQ
W5CPT wrote:
> I picked up a coil wound on a ceramic form Saturday at the West Kentucky
> Junque-Fest. I looked for my formula to figure out what I bought but can't
> find it.
>
> Diameter = 2", length = 3.5 ", 30 turns close wound of approximately 12
> gauge wire.
>
> Anybody got the formula handy?
>
>
> Clint - W5CPT
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