Re: [Amps] Could we *all* use the right tube part numbers?

[David Kirkby <david.kirkby@onetel.net>]

Steve Thompson wrote:

> Bill L. Fuqua wrote:
>  
>
> > While you are at it.
> > 20 meters is not 14 mhz. that should be MHz
> >    
> or even 20 metres :-)
>
> As for commas and suffix letters in part numbers, I have other things to
> worry about. To me it's only a problem if there's ambiguity 

Well it does as far as search engines are concerned.  Google interprets 
them differently with or without the commas. Trying to find data on the 
Eimac 3CX15,000B7  has problems, as Eimac's web page will not be found 
by Google unless you put the comma in. Yet it will return more hits 
without the comma, as most people do it wrong.

The search engine on my own web page would not find a 4CX350, as no such 
tube existed on my pages. I did not write the search engine.

> that matters in
> the context. I could be very pedantic in specifying that I'd made linearity
> measurements on a 4CX350A, and someone might gain the impression that the
> figures only applied to that variant, when they will apply just the same to
> 4CX350F.
>
> Steve
>  
But whilst those linearity measurements might well apply to the 4CX350F, 
as it has only a different heater voltage, the same could not be said 
for the 4CX350FJ, which may be used as a direct replacement for the 
4CX350F, but is designed to have lower intermodulation distorsion.

http://www.cpii.com/eimac/catalog/168239.htm

So I would have to say that comments about the linearity of a 4CX350 are 
worthless, unless you specifty the exact model.


--
Dr. David Kirkby, 
G8WRB

Please check out http://www.g8wrb.org/ 
of if you live in Essex http://www.southminster-branch-line.org.uk/



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