Yes, but he wants something that doesn't work. I could fill my gas tank
with water, but it wouldn' get me very far!
The only bead that WORKS at HF with no turns is Fair-Rite #73, and the
largest size just fits on RG142. It's the one that Walt Maxwell used in
his very good paper way back when. And to do anything useful, he showed
that you need 100 of them to make a dent, the largest number used
several chokes he published. Sadly, the only ones ever sold following
his idea were for the the smallest number of beads, and they were BADLY
under-rated for power or to kill noise, because there weren't nearly
enough of them.
73, Jim K9YC
On 7/18/2024 6:01 AM, Wes Stewart via RFI wrote:
Did you actually read what the OP said? It's a rhetorical question; of
course you didn't, otherwise you would not have issued your usual
answer to anything ferrite. He has a specific need, a suppressor bead
he can slip onto a wire near the pins of tube sockets. You want him to
wrap ten turns of wire through a big core. He wants a BEAD. As far as I
can determine, you can't buy a BEAD in mix 31. (If you can, please
pass along the source) Mix 43 has been used successfully for this
purpose for years. You can actually buy a mix 43 bead. A wise old
engineer once told me, "You should never use parts you ain't got."
_______________________________________________
RFI mailing list
RFI@contesting.com
http://lists.contesting.com/mailman/listinfo/rfi
|