[Amps] Orientation

[Paul Higginson]

In message <009101c55277$33ad2be0$0301a8c0 at home>, Steve Thompson 
<g8gsq at ic24.net> writes

>> I've heard from some sources that the structure of the tube can change
>> internally as it gets warm / hot and that changes to the tuning is
>> minimised by vertical mounting.
>Can't see the orientation affecting it myself.
>
>GS35 pics:

That's interesting to see.

I've never cut up a GS23 as "at the moment" I haven't got a duff one.. 
But I'm led to believe that the GS23 tetrode is a central cathode 
surrounded by grids / anode. From the description it's a coaxial 
structure.

I think I can imagine what it looks like but I'm not going to cut up a 
good tube to confirm it :-)

I suppose depending on how the screen(s) are supported would affect how 
central ( symmetric ) it all stays during changes in temp.

Of course this is all conjecture on my part and as no one else apart 
from your good self has expressed an opinion here.. I guess it's a suck 
it and see job.

Regards Paul



-- 
73 de Paul GW8IZR
(IO73TI Anglesey)