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Re: Topband: Antenna Switch isolation capacitor

To: "'k8gg@voyager.net'" <k8gg@voyager.net>, "'topband@contesting.com'" <topband@contesting.com>
Subject: Re: Topband: Antenna Switch isolation capacitor
From: "FZ Bruce" <k1fz@twc.com>
Reply-to: FZ Bruce <k1fz@twc.com>
Date: Tue, 25 Jun 2019 21:25:24 +0000
List-post: <mailto:topband@contesting.com>
The capacitor value is OK, but disc ceramics do handle current well.
73Bruce, k1fz

        -----------------------------------------From: k8gg@voyager.net
To: topband@contesting.com
Cc: 
Sent: Tuesday June 25 2019 4:22:27PM
Subject: Topband: Antenna Switch isolation capacitor

Hi All,

 A friend on 160 has had a problem with a Heathkit remote antenna
switch
 due to a partial failure of the isolation capacitor in the remote
unit. 
 It is a .02 uF 1.6 KV disc ceramic that isolates the DC from the
antennas.

 Since this results in about 4.4 ohms of XC - capacitive reactance in
 series with the 160 TX antenna, I was wondering if it would it be
worth
 while to substitute a .05 uF disc ceramic to reduce the capacitive
 reactance (XC) to under 2 ohms on 160 meters?

 Thanks any info. 73,

 George, K8GG

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