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:
how to meas Zo of FT caps?
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July 8th 04, 01:46 AM
Bob Liesenfeld
Posts: n/a
wrote:
Well here's what I did: I treated it like a peice of coax. I made a
fixture to hold the "feedthru" with semi-rigid coax on one side and a
50 ohm chip resistor on the other. I dropped in a short peice of coax
and cal'ed to that. Then checked VSWR, was about 1.00something. Then I
took out the coax, dropped in a few feedthrus and got VSWRs about 1.04
- 1.06, which works out to about 53 - 55 ohms or so.
How's that sound?
I could be wrong, but it really sounds to me that what you have is a
50 Ohm coaxial connector of some type, not a feed through capacitor.
Hey! Any chance you could 'loose' one and ship it to me? I'd love to get
a look at this critter.
Best 72
Bob 'POQ
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