[Lowfer] Musical capacitors and dissipation loss

Fri, 14 Nov 2003 18:57:44 -0600

Dang Peter, You have a good memory. I remember reading that article but
where it is now is a good question.

Mike>WE0H

-----Original Message-----
From: [email protected] [mailto:[email protected]]
On Behalf Of Peter Barick
Sent: Friday, November 14, 2003 4:26 PM
To: [email protected]
Subject: Re: [Lowfer] Musical capacitors and dissipation loss

Yes I've heard about hand-made "trombone" Caps. Think Mike also toyed
with them. But I'm thinking of a QST article a few yrs back. A ham made
a Cu tubing loop for 160M and tuned it w/ such a Cap. Think he used
Teflon Dialectic. His tuning mechanism was a nice looking structure.
Maybe others can add more.

Recall his had two "stationary" and parallel tubes and the slider was U
shaped and inserted via a threaded adjuster. Requires a good fit to
avoid wobble.

So there goes those contact problems.

Peter
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>>> [email protected] 11/14/03 03:40PM >>>

Hello Again,

Anyone ever hear of a trombone capacitor?  Basically 2 pieces of copper
tubing that are slipped inside each other, isolated with a dielectric
such as teflon.
...
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