Hi folks:
This a pretty off topic, but I hope someone might be able to shed some
light upon this question.
A couple years ago, at the Dayton HamVention, in a fit of greed, I
purchased a number of ferrite beads which, although they were NOT the FB-
73-2401 beads I usually buy, they WERE "advertised" (by the seller) as
being mix 73. These beads have a somewhat larger inside diameter, making it
easier to slip them over slightly larger diameter coax (e.g. RG-8X, etc.).
And the price was REALLY GOOD (hence the previous reference to 'greed').
I am now at the point of wanting to use these beads, but I'd like to
confirm that they might work at HF. I don't have a lot of sophisticated
test equipment, BUT I do have a sign gen, 100 MHz scope, an MFJ-259B
Antenna SWR Analyzer, and the more commonly available 'shack-type'
tools at my discretion.
Does anyone happen to know of a way to do some cursory testing on these
beads (possibly using the MFJ-259) to tell if they might offer a decent
impedance at HF? And if, how?
Since some of our OT threads seem to linger MUCH longer than they should,
please reply to me OFF-REFLECTOR and if I can confirm that a particular
procedure works as advertised, and it repeatable, I'll summarize it (giving
full credit to whomever offered it), and post it back to the reflector.
73,
Tom N0SS
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