RadioBanter - View Single Post

April 21st 06, 07:51 PM posted to rec.radio.amateur.antenna

wrote:
John,

Thanks for the info.

What I've got are the .38 OD .25 ID ones.

How long?

Thanks for the info. Seems
like I've been overkilling the VHF stuff. I think my 2m beam has 50 of
them on it, and if they're 12 ohms down at 7MHz...

The impedance of type 43 beads keeps climbing (though not in
proportion to frequency) to well above 100MHz.

I'll save that fair-rite link for future reference, but right now it's
locking my browser!

It will unlock after a significant fraction of the 8 Meg file loads.
At least, that is what it does with mine.

I guess the bead balun would be more broadbanded. I've not yet
measured the self-resonant frequency of my toroidal choke, but I'd
imagine it's somewhere in mid-high HF.

I think I'll string up a hundred beads and use that as my choke.

Way more than needed. :-)