[Amps] 3CPX1500A7

[Carl]

For HF use the differences are inconsequential as long as you recognize 
the .5V difference in filament voltage.

Carl
KM1H

----- Original Message ----- 
From: "k9wms-1" <k9wms at comcast.net>
To: <amps at contesting.com>
Sent: Tuesday, February 10, 2009 11:35 PM
Subject: [Amps] 3CPX1500A7


> Hi Everyone,
>
>
>
> I'm new to the group and working on building an amp.  I'm planning to 
> use a
> triode and have acquired several "generic" items for the project. 
> It's now
> time to choose a tube to build around and I have considered both the 
> 8877
> and a pair of 3CPX800's.  Today I was pointed to Harbach's site (even 
> though
> it's one of my bookmarks) where they have a 3CPX1500A7 available at an
> attractive price.
>
>
>
> I went to Eimac's spec sheet and, unlike most of their other spec 
> sheets,
> there is no data for using this tube in a class AB1 or similar 
> grounded grid
> configuration.  Normally I would say that this is a 3CX1500 designed 
> for
> pulse use much as the 3CX800 & 3CPX800 series.  But there are some 
> notable
> differences in the basic electrical spec's of the tube.  And they only 
> show
> plate voltages of 10k and 15k.
>
>
>
> Is anyone in the group familiar with this Pulse version of the tube? 
> Is it
> really a 3CX1500 designed for pulse use?  I have been unable to find 
> any
> data to show normal and max volts/current for the 3CPX.
>
>
>
> Any comments or information would be greatly appreciated.
>
>
>
> 73,
>
> Dennis/K9WMS
>
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