[Amps] Could we *all* use the right tube part numbers?
David Kirkby
david.kirkby at onetel.net
Tue Feb 15 04:11:49 EST 2005
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/
More information about the Amps
mailing list