[Amps] MLA-2500 retrofit.

[Carl]

Ive done a few to a single 3CX800A7. Its an easy electrical swap but a PITA 
for sheetmetal and mounting the tube horizontally and using the original 
fan. It works well at 1100-1200W out with 50W drive. About the same as a 
LK-750 or the single hole MFJ.

That DK9IP conversion looks real nice but I dont know how far the stock xfmr 
and Mickey Mouse tank circuit can be pushed.

Im sure the Class C designed Ruskie tubes have their usual 11M IMD 
performance.

Carl
KM1H

----- Original Message ----- 
From: "Jim Thomson" <Jim.thom at telus.net>
To: <amps at contesting.com>
Sent: Tuesday, March 02, 2010 11:47 PM
Subject: [Amps] MLA-2500 retrofit.


>I have a buddy with TWO   MLA-2500's..... and both now with flat/bad tubes.
>
> I believe one of them has a tuned input, and the 2nd one does not.
>
> Is the tube really unavailable ?      If so, what are his options ? 
> What other tube[s] can be retrofitted ?
>
> What is the easiest retrofit available ?     Does anybody do these 
> retrofits as a sideline ??
>
> later... Jim   VE7RF
>
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