I'd found this site a while ago:
http://karinya.net/g3txq/chokes/
Seems to have a lot of good information.
Sean WA1TE
On Thu, Nov 1, 2018 at 4:35 PM David Eckhardt <davearea51a@gmail.com> wrote:
> For all, I would strongly recommend the following reference:
>
> *Transmission Line Transformers*
> By: Jerry Sevick, W2FMI
> ISBN: 0-87259-046-1
>
> Amaxon like has it.
>
> Dave - WØLEV
>
> On Thu, Nov 1, 2018 at 7:53 PM David Eckhardt <davearea51a@gmail.com>
> wrote:
>
> > OK, guys, I had to go back and redo the measurements as I couldn't find
> > them on the HD, only pictures of the 'subjects'. So, have a read of the
> > attachment where I present three CM chokes, all of bifilar winding
> manner.
> > If there are questions, please email. SEE THE ATTACHMENT.
> >
> > You can read the resulting complex impedance for each of the 5 different
> > resistive terminations for each of the three CM chokes which I measured
> off
> > the Smith Chart plots.
> >
> > Questions? Please email.
> >
> > Dave - WØLEV
> >
> > On Thu, Nov 1, 2018 at 4:17 PM bill K7WXW <K7WXW@qrpdx.org> wrote:
> >
> >> Thanks for the info on what you are doing Jim, and Davem the offer to
> >> share data on your chokes. I am looking forward to studying all of it.
> >>
> >> If I separate "how many turns and what materials should be used" out of
> >> the current discussion, I am still looking for tips on building chokes,
> >> particularly bifilar chokes and getting small connectors onto big wires,
> >> choice of connector configuration (everything i own uses UHF connectors)
> >> and the like. I am figuring all this out in my own bumbling way but it
> >> would probably save some wire and a boxful of connectors to hear what
> >> you all do.
> >>
> >> 73 de bill K7WXW
> >>
> >>
> >>
> >> ______________
> >> brevity is beautiful.
> >> _______________________________________________
> >> RFI mailing list
> >> RFI@contesting.com
> >> http://lists.contesting.com/mailman/listinfo/rfi
> >>
> >
> >
> > --
> >
> > *Dave - WØLEV*
> > *Just Let Darwin Work*
> > *Just Think*
> >
>
>
> --
>
> *Dave - WØLEV*
> *Just Let Darwin Work*
> *Just Think*
> _______________________________________________
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> RFI@contesting.com
> http://lists.contesting.com/mailman/listinfo/rfi
>
--
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