[Boatanchors] 6211 = 12AX7 ? 12AU7?

[Reed Park]

Sheldon Daitch wrote:

> I am really going to show my ignorance here, but weren't there at least
> one four digit tube identifier for a tube that looked like a
> 12AU7/12AX7, same dual triode, same mechanical look, designed
> specifically for either vacuum tube flip-flop or multivibrator use, way
> back where there were vacuum tube "computers?"
>
> Is this 6211 possibly one of these units?
>
> Sheldon
>
> Bill Beech wrote:
> >
> > Bob,
> >
> > According to my tube data, that is neither a 12AU7 nor a 12AX7.  It has
> > lower plate voltage ratings than either of those.  I hold no
> > replacements for it.
> >
> > 73,
> > Bill, NJ7P
> >

12AU7W  -  6189
12AU7     -  6680
12AT7     -  6201
12AX7     -  6681

7 3
Reed

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