[Amps] Amp site?

[2]

>
>--- NI4L <ni4l@charter.net> wrote:
>> http://www.nd2x.net/base-1.html
>> 
>
>Thanks for pointing out a very interesting site!
>
>I found the info on revitalizing cathodes especially
>useful.
>
**  Revitilizing thoriated tungsten cathodes seems to work with tubes 
whose emission was reduced by air contaminating the thorium.  In the case 
of a slightly gassy tube, the contamination can be driven off by 
temporarily increasing the filament V.  In a tube with a good vacuum that 
is low on emission, acetylene (H^2C^2) gas can be used to recarburize the 
filament.  In Other Words, send the tube to a commercial rebuilder. 

>I never gave ex C.C.C.P. tubes much thought but now I
>know they are out there.
>
>However, If anyone is aware of good construction
>examples with tubes like the 4-1000 I would 
>appreciate it. I have about a half dozen of these and
>am planning to make a nice 20m contesting amp.
>
>TNX DE KA4JVY
>Mark
>
>
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-  R. L. Measures, a.k.a. Rich..., 805.386.3734,AG6K, 
www.vcnet.com/measures.  
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