[Amps] HeathKit SB-220 Tank Circuit Inductance

[gudguyham at aol.com]

What does the 14 turns give you for inductance?


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On Friday, May 12, 2023, 8:40 AM, Bill Smith via Amps <amps at contesting.com> wrote:

Has anyone measured the total Tank Circuit inductance of the SB-220?   I have read that it needs to be doubled in order to use it for 160 meters.  I used online Torrid Core calculators to estimate it using the recommendations in AG6K's article but 14 turns on a T-225-2 powdered iron core doesn't seem to be enough inductance.  Maybe I am missing something.73 and thank you,Bill KO4NR
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