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[Amps] 4-250A question

To: <amps@contesting.com>
Subject: [Amps] 4-250A question
From: Wt8r@aol.com (Wt8r@aol.com)
Date: Thu, 4 Jul 2002 10:27:35 EDT
In a message dated 7/4/02 2:33:07 AM Eastern Daylight Time, ni4l@charter.net 
writes:


> 
> the filiament voltage ........ for the 4-250A  tubes can you go over a 
> bit, say to 6 volts?

You can, but it is like constantly running an automobile engine above red 
line RPM. 


> will this adversly affect the tube  what i really need to know will it 
> kill it right away.
> 
Depends on your definition of right away, but it will shorten the life by 
probably 75% and accomplishes little or nothing. 

What is the max filiament voltage any of you have put on this tube and 
> 
> made it last and preform to your satisfaction?  Eimac says 5.0 +/- 0.25V.
> thanks for any help you can give
> Chris NI4L
> 
> 
Tubes, like other things, are meant to be operated within the manufacturer's 
specifications.

73 de

Dave, WT8R


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