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Re: [Amps] corona on a quad

To: <amps@contesting.com>
Subject: Re: [Amps] corona on a quad
From: "Peter Voelpel" <df3kv@t-online.de>
Date: Fri, 13 Jul 2012 11:16:02 +0200
List-post: <amps@contesting.com">mailto:amps@contesting.com>
Fibreglass is a very poor isolator, especially when wet.
It turned into flames at the 1KW level already when I used it at a high
impedance point.
1 5/8" cable is rated for 32KW@30MHz permanent power and a 40°C environment
temperature.
If you need special care there is something else wrong.

73
Peter, DJ7WW



-----Original Message-----
From: amps-bounces@contesting.com [mailto:amps-bounces@contesting.com] On
Behalf Of Máximo EA1DDO_HK1H

The power issue is always happening in the quad´s corners, on driver and
directors, burned!! 
Now is not burnng any more, after use Teflon corners over ceramic insulators
(yes, with +40 Kw fibreglass is not isolating anymore).

Coax cable is Heliax 1 5/8, but needs special care as well. since it is not
rated to that power.
nfo/amps

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