Quote:
Originally Posted by knc1
@geekmaster : too much surface loss at S-Band for copper, your choices are silver or gold, but not too much of it, due to the "skin effect" at S-Band (and above / below S-Band).
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I only said "copper vapor" in lieu of my little "variac" story above, to fit in with
twobob's off-topic topic concatenation.
I have a bunch of old coax with silver core and silver braid. But it is obsolete. I use LMR-400 these days. Very limited waveguide collection at this time...
And besides, a glass waveguide would look prettier with gold than with copper.