Interesting,
In the 60's I ran two 250TH tubes in grounded grid driven by a pair of
6146B tubes. My exciter was a 20A.
It worked great, however, I did have to provide grid bias to get the
appropriate idle current.
This tube has higher mu that the 250TH and would be a good possibility for
G-G use but the gain would
be low compared to the more modern tubes that have mu of 200 or more.
Mind you a good portion of the output would be contributed by the driver
and this tube would possibly take 150 to 200 watts
of drive.
As far as socket goes, one could easily be fabricated, I'm sure. It would
make for an interesting experiment.
Cobble an amplifier together and let us know. I think this tube has been around
for some time and probably still a lot
of Russian surplus out there.
I am sure that the IMD would be no worse than a 4-1000A, or 4-400 in G-G
which I have never seen any IMD figures published.
73
Bill wa4lav
________________________________
From: Amps <amps-bounces@contesting.com> on behalf of Yueh Hsu
<hsu4qro@gmail.com>
Sent: Sunday, January 12, 2020 12:31 AM
Cc: Amps <amps@contesting.com>
Subject: Re: [Amps] anyone build an amplifier use 6T51 glass buble?
There are a few manufacturers in China, one of them located our city:D, If
Its driveing power not too high, I want build one.
Kelly Taylor <ve4xt@me.com> 于2020年1月12日周日 上午11:59写道：
> 6 inches across and 10 inches tall… Cool!
>
> 73, kelly, ve4xt
>
> > On Jan 11, 2020, at 9:50 PM, MU 4CX250B <4cx250b@miamioh.edu> wrote:
> >
> > A cool tube, Hsu, kind of a throwback to the 1960s, when homebrewers
> > were running 3-1000Zs and grounded grid 4-1000As. This is a BIG old
> > triode that I bet is a beauty to see lighted up with that nice
> > tungsten filament and plate glowing orange.
> > 73,
> > Jim w8zr
> >
> > Sent from my iPhone
> >
> >> On Jan 11, 2020, at 7:28 PM, Yueh Hsu <hsu4qro@gmail.com> wrote:
> >>
> >> The datasheet here
> >> https://nam04.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.boezk.com%2Fdownload_en%2FFU6051_EN.pdf&data=02%7C01%7Cwlfuqu00%40uky.edu%7C3670831835b1423f7f6c08d79720c2c3%7C2b30530b69b64457b818481cb53d42ae%7C0%7C1%7C637144039288767524&sdata=RewRiXUI4w5xZiBXzv%2Btv8L%2B9X0HRgmZK4iKLRckOuE%3D&reserved=0,
> its
> >> mu=48,not too bad. it is a cheap tube . the manufacturer's list price
> only
> >> $100+....
> >> Hsu
> >> _______________________________________________
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>
>
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