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G0HZU_JMR · 11th Jun 2021, 6:46 pm

If I understand your latest info correctly it looks like the inductances are about 4uH without the ferrite and 6uH with the ferrite. A quick look on a coil calculator spreadsheet estimates the air core version to be just under 5uH.

I think these inductance values will be too low for your 1MHz pi match application. The Q of that coil won't be good either.

11th Jun 2021, 6:46 pm	#11
G0HZU_JMR Dekatron Join Date: Sep 2010 Location: Cheltenham, Gloucestershire, UK. Posts: 3,077	Re: Modifying an inductor? If I understand your latest info correctly it looks like the inductances are about 4uH without the ferrite and 6uH with the ferrite. A quick look on a coil calculator spreadsheet estimates the air core version to be just under 5uH. I think these inductance values will be too low for your 1MHz pi match application. The Q of that coil won't be good either. __________________ Regards, Jeremy G0HZU