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[AMPS] Tube rating question

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Subject: [AMPS] Tube rating question
From: (Joe Subich, W8IK/4)
Date: Wed, 24 Feb 1999 08:49:09 -0500

> The Eimac data sheet for the 3CX800A7 was an after thought. The tube had
> been developed and rated at 1370 watts output with "typical" operation
> at 2500 volts at 800 ma. THEN the FCC changed the power limits to 1500
> watts OUTPUT and Eimac then changes the ratings on the tube for 2200
> volts at 500 ma. operation and 750 watts output which is what the
> technical data sheets show.


If the tube was designed for opration at 2500 volts 800 mA, why does the 
data sheet/catalog give 2200 volts 600 mA as "maximum ratings?"  Why not 
simply show the lower "typical operation" numbers like many other tubes 
in the catalog?  

   ... Joe Subich, W8IK/4  ex-AD8I

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