>
>Rich says:
>
>>The thing to keep in mind about Ni-Cr-Fe/nichrome-60 alloy, is that the
>>decrease in VHF Q it affords is only 41% @100MHz.
>
>Isn't that what you'd expect?
pretty much. Unfortunately, Wes made no measurement of the copper
L-supp, so a direct comparison of the inductors is not in the cards.
>Skin effect will lead to Q going up inversely
>proportional to square root of frequency.
>
At 50MHz, the Q ratio between Ni-Cr alloy and Cu appears to be around 1
to 5.5. I suspect that the VHF unQ is slightly enhanced because the
Ni-Cr is slightly magnetic. Adding R-supp makes the Q ratio smaller.
>
later, Peter
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