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SV: SV: [AMPS] Tetrode Amp Help

To: <amps@contesting.com>
Subject: SV: SV: [AMPS] Tetrode Amp Help
From: measures@vcnet.com (measures)
Date: Fri, 10 Dec 1999 10:36:16 -0700
>
>
>Hi all,
>
>> >Thanks for info. Of course you need always  a high frequency screen grid 
cap
>> >or grounded g2. But you did not get my point: if your g2 voltage is slowly
>> >following your SSB-signal you do not get envelope distorsion but a slow 
gain
>> >variation. 
>> 
>> I do not agree.  When the screen / G2 voltage is not held constant, 
>> distortion results.  
>
>I'm with Rich on this.  "A slow gain variation" is a nonlinearity!  
>Whether it is small enough to be unimportant, i.e. legally acceptable 
>is another question, but why not use a stiff regulator and avoid this 
>source of distortion?
>
indeed, George.   G2 DAF amplifer salesmen seem to be somewhat DAFt.  
They are sort of like inventors of 400mpg carbs for autos.  

cheers


-  Rich..., 805.386.3734, www.vcnet.com/measures.  


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