Pete,
I used a big 300pf breadslicer with somewhere in the 7.5 to 9KV range ( I
forget the spacing, it was a vintage Johnson) and a couple of 857 size
ceramic caps for my Omega at a prior QTH.
Smaller spacing and lighter duty fixed caps didnt survive the 1200W of my
own amp but the rebuild was tested with a customers Alpha 77DX and it held
together fine. This was in the mid 80's and it was all housed in a plywood
box.
The other cap was a standard smaller spacing, dont remember the value but
its still partially together out in a storage trailer and I can measure it.
I seem to remember it was an even older 1000pf Cardwell.
Carl
KM1H
----- Original Message -----
From: "Pete Smith N4ZR" <n4zr@contesting.com>
To: <topband@contesting.com>
Sent: Thursday, January 24, 2013 2:33 PM
Subject: Topband: alternative to vacuum variables
One of the reasons I have mot gone to high power on 160 is the cost of
capacitors for my omega match - at least $300. Anyone know of any
workable alternative? I remember someone writing about using coiled-up
RG-8, RG-213 or maybe Teflon coax. Where can I find more information?
--
73, Pete N4ZR
Check out the Reverse Beacon Network at
http://reversebeacon.net,
blog at reversebeacon.blogspot.com.
For spots, please go to your favorite
ARC V6 or VE7CC DX cluster node.
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