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[AMPS] Misc. Oscillations

To: <amps@contesting.com>
Subject: [AMPS] Misc. Oscillations
From: 2@vc.net (measures)
Date: Sun, 5 Mar 2000 22:14:39 -0700
>
>
>
>
>> From: measures [mailto:2@vc.net]
>> >
>> Adjusting filament-v is simpler than tuning a tank.  
>
>It may be more simple than tuning a tank except that one does not 
>need to open the cover to tune a tank.  One must open the cover to 
>measure filament voltage properly (directly at the filament pins). 
>
  The 2 RF chokes bring the fil. v. to the test points on the rear panel. 
 Why must one open the cover if the needed test instrument connections 
are on the rear panel?


>> Several models of Henry Radio amplifiers use approx. 6v on 
>> 3-500Z/8008 (4.8v) filaments.  
>
>It is lousy design but that's not the issue. 

Put a rheostat on the fil transformer and the owner can adjust the fil. 
to the correct potential whether the electric mains are 200v, 220v, or 
250v.  Without a means of fil. V adjustment, the owner is SOL.  That is 
the issue, Mr. Subich.  .  

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