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[AMPS] 3CX800A ratings

To: <>
Subject: [AMPS] 3CX800A ratings
From: (2)
Date: Wed, 4 Jul 2001 10:26:52 -0700
>I believe the max plate voltage was also lowered.
>Even with 3kv on the plate 1500 watts out exceeds
>max plate dissipation and max plate current.
>Henry Radio "claims" 1500 watts with a single
>pulse rated 3cx800 in their 6-meter amps.  It's an
>expensive tube to run so hard.
/\   Good point, Paul.  /  The greatest danger with over-current is not 
grid damage.  It is flaking of the emissive oxide coating off of the 
cathode.  Cathode flakes often lodge between the cathode and grid, 
creating a fatal short.  An autopsy photograph of this malady can be 
found on p.17 of "Parasitics Revisited", `September, 1990 *QST*.  

>-----Original Message-----
>[]On Behalf Of
>Sent: Tuesday, July 03, 2001 10:02 PM
>Subject: [AMPS] 3CX800A ratings
>Does anyone know the initial ratings on this EIMAC
>tube before they reduced it to present values.
>Have chance to get 6M amp with 1 3CX800A tube that
>gets 1500W out with 3KVDC.
>73 de Arne N7KA
>FAQ on WWW:     
>Administrative requests:

-  R. L. Measures, 805.386.3734,AG6K,  

FAQ on WWW:     
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