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Re: [Amps] SB220 changing SWR in bypass

To: "Peter Bertini" <radioconnection@gmail.com>, <amps@contesting.com>
Subject: Re: [Amps] SB220 changing SWR in bypass
From: "Carl" <km1h@jeremy.qozzy.com>
Date: Wed, 2 Jan 2019 10:51:24 -0500
List-post: <mailto:amps@contesting.com>
The SB-220 will show increasing VSWR in bypas with increasing frequency due to the antenna relay having some inductive reactance.

A 30-33pf 1000V COG/NPO disc cap will get it down or you can use a mica compression trimmer to get it perfect. Ive used the cap method for many decades even on 6M.

Carl



----- Original Message ----- From: "Peter Bertini" <radioconnection@gmail.com>
To: <amps@contesting.com>
Sent: Saturday, December 29, 2018 6:43 PM
Subject: [Amps] SB220 changing SWR in bypass


Where is the SWR meter located in line??  Before, or after the amp???

Pete
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