Fw: Re: Fw: Re: [Boatanchors] Tube data

[J. Forster]

Try reading this:

http://www.ilorentz.org/beenakkr/mesoscopics/topics/noise/physics_today_2003.pdf

or do a Google search on "shot noise"  or "flicker noise" or "Piosson
Statistics"

Also, do not confuse cathode temperature with "Noise Temperature"

This is not a trivial subject, further muddied by nonsense from the audio fools.

-John




windy10605 at juno.com wrote:

> Yes, I know the important number is S/N ratio which is effected by a
> number of sources and parameters. It just seems intuitive (to me anyway)
> that more cathode activity would be a potential source. Maybe reducing
> filament voltage of the frontend tubes would provide even better results,
> especially for those like the 7044 when used in the RF section.
>
> 73 Kees K5BCQ