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Re: Topband: Homebrew capacitors

To: ZR <zr@jeremy.mv.com>
Subject: Re: Topband: Homebrew capacitors
From: Richard Karlquist <richard@karlquist.com>
Date: Mon, 30 Sep 2013 18:37:33 -0700
List-post: <topband@contesting.com">mailto:topband@contesting.com>
On 2013-09-30 17:57, ZR wrote:
In the late 60's I made a coaxial capacitor from a length of RG-17 to
supply most of the C for a 40M Bobtail. A little too big to fold and
the losses were not even worth thinking about.
On 160 with a decent coax what would be the effect of a little loss
besides a little heat ?

Carl
KM1H

If the coax is very large, as in this example, or is very short,
or the circuit Q is low, you might get away with such a long
skinny capacitor, especially since it is a good heat sink.
However, there are other cases where the losses become a problem.
As the saying goes, YMMV.

Rick
N6RK
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