[Boatanchors] Difference Between 7591 And 7591a

Sat, 15 Jun 2002 16:39:40 -0700 (PDT)

Hi Duane

The 7591a has higher plate and screen voltage ratings.
this is better for equipment that push the outputs
harder (fishers and scotts) I would rather use the EH
7591a then the 5881 (if they fit) because of bias and
wiring problems (and lower output)

Mike

--- "Duane Fischer, W8DBF" <[email protected]> wrote:
> 
> 	
> Can any of you tell me the differences between the
> American made 7591 and the
> 7591a tubes? Is the 5881 a good substitution for the
> 7591 output and
> amplification characteristics? (I know that two
> wires on the tube socket must be
> changed.)    	
> 	
> Thank you.	
> 	
> Duane W8DBF	
> 
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