Cable Xperts advertises that they will build custom coax jumpers
to order. It wouldn't surprise me if you could arrange to send them
the beads and let them do the assembly. Might be a good thing
for a group buy. You can also just buy a pre-made RG-8X jumper
and wrap several turns around an FT-240-77 core if you need a
good common-mode choke for the lower HF bands (2 cores
in series with 6 turns each will give about 1100 ohms common-
mode impedance on 160 meters and 900 ohms on 80 meters).
You can easily get 5 or 6 turns through the core even with PL-259's
installed. Cost would be about $15.00 for the jumper and $10 for
the 2 cores. If you need better suppression towards the middle of
the HF range, you can substitute FT-240-43 cores in place of the
-77 ones. The 43 cores will give an impedance peak around
12 MHz.
73 de Mike,
W4EF.................................................................
> Which brings up the interesting point... Is there a manufacturer of these
> sorts of things that tells you what the innards are? Or that will build
to
> order (at a low cost..)? Then you get the advantage of making your own
> evaluation of expected performance, but also the quantity purchase of
> components and assembly by someone who does a lot of it. I'd much rather
> have connectors installed by someone who does it 200 times a day than
> someone (like me) who does it every few months. It IS a craft or art, and
> regular daily practice helps a lot.
>
> Is this a market niche that is not being addressed?
>
> Jim, W6RMK
> >
>
_______________________________________________
See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless Weather
Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any questions
and ask for Sherman, W2FLA.
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