zeno wrote:
seriously, though, if one needed a section of ladder line to really stay
put (say a section which gets nervously close to other naughty metal things
or wire, why couldn't you fabricate just that section out of copper tubing
and then go the rest of the way with wire? Are there impedance issues when
changing the wire thickness along the way?

I have used solid copper wire sliding inside copper tubing to achieve
an adjustable length transmission line for matching purposes.
--
73, Cecil http://www.qsl.net/w5dxp



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