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Re: [Amps] NCL-2000 retube - 4CX300 options

Subject: Re: [Amps] NCL-2000 retube - 4CX300 options
From: John Lyles <>
Date: Thu, 25 Aug 2022 01:18:11 -0600
List-post: <>
I have some new/old stock - unused 4CX300A and 4CX350A that are available if anyone has use for them anymore.

John Lyles


Message: 1
Date: Fri, 19 Aug 2022 04:45:43 +0000
From: "Fuqua, William L." <>
To: Paul Decker <>, Radio WC6W <>
Cc: "" <>
Subject: Re: [Amps] NCL-2000 retube
Content-Type: text/plain; charset="us-ascii"

    A pair of 4CX300Y tubes. Yes, they do use special sockets, but both tubes 
($60 ea. new in can) and Sockets are readily available
on E$(#*. The have 400W plate dissipation. Bias changes will have to be made. 
The base is skinner than the the 4CX250B or the 4CX350A
thus allowing better air flow to the anode. The 4CX300A would work just as 
well. The 8122 plate dissipation was a bit overrated, however.
They were intended as a cheap alternative for the 4CX250B or 4X150A/7034.
   Bill WA4LAV

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