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Re: [Amps] SB-220 grid current

To: w8ji@w8ji.com, rbonner@qro.com
Subject: Re: [Amps] SB-220 grid current
From: Gudguyham@aol.com
Date: Mon, 27 Nov 2006 01:55:26 EST
List-post: <mailto:amps@contesting.com>
 
In a message dated 11/25/2006 12:28:05 P.M. Eastern Standard Time,  
w8ji@w8ji.com writes:


In a  GG amp a negative grid meter swing is caused by a short 
from the cathode  to chassis ground. That can be a shorted 
tube or anything on the cathode  shorted to the chassis.




In an Sb-220, if the amp works fine and the only problem is negative going  
grid meter, the .82 grid meter shunt is opened.  If the amp does not  operate 
normally, then what Tom suggests is possible.   Lou
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