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Re: [TowerTalk] Capacitors To Tune 160 Vertical

To: "Tower Talk List" <>
Subject: Re: [TowerTalk] Capacitors To Tune 160 Vertical
From: "Jim Brown" <>
Date: Wed, 05 Dec 2007 14:12:30 -0800
List-post: <>
On Wed, 05 Dec 2007 14:02:31 -0700, David Gilbert wrote:

>I don't think you get it yet.

I'm not so sure that you do either. :)  There is leakage, there is 
stray inductance, and there is a series loss component. ALL of these 
factors are at play, not just one. 

FWIW -- I posted the original question, which was, if I'm looking 
for 0.027 (j 40 at 1.825 MHz), what caps will work at 1.5 kW. The 
series/parallel combo of eight 0.0027 400V dipped micas that I 
cobbled together worked just fine for 27 hours during ARRL 160. 
Would a nice vacuum cap give me less loss? You betcha!  Did I have 
one?  Nope. Used what I had. Worked. Will I pursue a vacuum cap. 


Jim K9YC


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