SB-104(A) toroids

[Kees & Sandy Talen]

Mornin',

As I continue to putter around with the SB-104As I was wondering
if one of the guys who worked on the design could give me some
insite on toroid core selection. I see several instances where lower
permeability cores were selected than I would have used. Amidon
states that Higher Q can be obtained at the high end of the frequency
range for small cores and at the low end of the frequency range for
larger cores......what constitutes a large/small core T-37 ? T-200 ?


73s  Kees K5BCQ
Radio Homepage   http://www.qsl.net/k5bcq/

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