[ARC5] [SPAM] Re: VT-4-C, 211 tubes

[Marty Reynolds]

>>
>> BTW, the 838 is a capless 805 & has the same odd-bodkins variable
>> pitch grid
>
> As I remember it that weird grid was an early attempt at a
> zero-bias tube.
>

Ken zero-bias had been around.  Real fine grid-pitch high-mu triodes
like 811 were examples.  But the 805/838 went from fine (hi mu) to
course (low mu) as you ran up the grid


> And, unfortunately, both the 805 and the 838 are other
> audio-phool treasures.

Well not so much as the 211/VT4C.  ESRC has 838s for $60.  838s were
outputs on the Stromberg CM-1 shipboard battle PA systems

I've heard there's been ebay ads certifiying triodes through which
no soundstage-spoiling rf has passed.  But I've never seen such

To whom it may concern.  A 211H offering was published here.  The 211H
is a hi-mu version of the med. mu 211.  Think it was a Taylor concoction

  Marty