I started to write a similar reply myself about 30 minutes ago, and then I
noticed what he was doing with the WD-1. :-)
I didn't do any math, but just looking at Jim's photos (1 attached) and
text, perhaps the DXE transformers he is using are close enough. Note that
Jim has two runs of WD-1 shorted at each end and spaced ~50mm. I'll bet the
line Z is not that far off of the DXE OWL.
I was wondering how smooth the inside of those ceramic insulators are. If
they are as rough as the ones I have, it could wear away the WD-1 over time.
73, Mike
www.w0btu.com
On Fri, Oct 17, 2014 at 5:37 AM, Tom W8JI <w8ji@w8ji.com> wrote:
> As with any transmission line, the effect of that mismatch is periodic
> with frequency ... If the line transmission mode impedance is 100 ohms ...
>
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