> Most of the discussion I've seen for the 6 meter Heliax
> duplexer has been centered around using 1 5/8" Heliax.
> Has anyone used 3 1/8" stuff?
Probably not yet.
> Would there be any advantage to using the larger size?
> I have some available.
Yes, higher Q = better performance.
> Has anyone used the foam 1 5/8 instead of air line for
> a duplexer?
Yes, both work very well. Both have their advantages
although I prefer the new teflon/delrin spiral spaced
air line for ease of construction.
> Thanks,
> Al, K9SI
We use the various types of hard line based on availability
of surplus line. Getting above 1-1/4 inch hard line is
typical for the relm of Broadcast Feed-Line Applications.
We use what we can get, but the larger diameter lines would
in theory work better.
cheers,
skipp
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