[Boatanchors] 6211 = 12AX7 ? 12AU7?

Sun, 12 Jan 2003 10:38:48 -0500

Just  dug into my referance books. This is what it says.

12AX7 = 12AX7A, 12AX7WA, 12DF7, 12DT7,
                7025, 7025A, 6057, 6681, 7494, 7792.
                May not work in all circuits
                12AU7, 12AU7A.
                Parallel filaments
                12AD7, 12BZ7, 12DM7, 5751, 5751WA

12AU7 = 12AU7A, 12AU7W, 12AU7WA, 5814A,
                5963, 6067, 6189, 6680, 7316, 7489,
                7730.
                May not work in all circuits.
                12AX7, 12AX7A
                Parallel filaments.
                5814, 5814WA

12AT7 = 12AT7WA, 12AT7WB, 6060, 6201, 6671,
                6679, 7492, 7728, A2900.
                Parallel filaments.
                12AZ7, 12AZ7A
Regards
Gary...WZ1M

----- Original Message -----
From: "Gary" <[email protected]>
To: "Ross Hochstrasser" <[email protected]>; "Sheldon Daitch"
<[email protected]>; "Bill Beech" <[email protected]>
Cc: <[email protected]>
Sent: Sunday, January 12, 2003 10:20 AM
Subject: Re: [Boatanchors] 6211 = 12AX7 ? 12AU7?

> Ross, your rite. 7025 = 12AX7.
> I was in a hurry and these were of the top off my head. Thank you for the
> correction.
> by the way, 6211 = 2013
> Regards
> Gary...WZ1M
>
>
> ----- Original Message -----
> From: "Ross Hochstrasser" <[email protected]>
> To: "Sheldon Daitch" <[email protected]>; "Bill Beech" <[email protected]>
> Cc: <[email protected]>
> Sent: Sunday, January 12, 2003 10:06 AM
> Subject: Re: [Boatanchors] 6211 = 12AX7 ? 12AU7?
>
>
> > Hi,
> >   Correct me if I'm wrong but isn't the 7025 a substitute for the
12AX7??
> I
> > think the 6211 might be a 12AT7. Ross
> > ----- Original Message -----
> > From: "Sheldon Daitch" <[email protected]>
> > To: "Bill Beech" <[email protected]>
> > Cc: <[email protected]>
> > Sent: Sunday, January 12, 2003 9:35 AM
> > Subject: Re: [Boatanchors] 6211 = 12AX7 ? 12AU7?
> >
> >
> > > 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
> > > >
> > > > www.nj7p.org
> > > > herford.ampr.org
> > > >
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