General > General Technical Chat
Historical 'Look' of old Radio Components!
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TimFox:
Are you sure there are 6AU6s in that lineup?  The others are all octals, but the 6AU6 is 7-pin miniature.
Cyberdragon:
Use gas regulators (or even full regulator circuits) for high voltages, way more stable than gross "zener strings" :-- (unless you can find good HV zeners).
vk6zgo:

--- Quote from: TimFox on June 25, 2020, 02:47:18 am ---Are you sure there are 6AU6s in that lineup?  The others are all octals, but the 6AU6 is 7-pin miniature.

--- End quote ---

7 pin miniatures were certainly available in that era, & AWA had their own tube factory, so that combination may have fitted well with their excess inventory.
The tube factory considerably increased its manufacturing capacity during WW2, so they may have had large quantities of particular types which were made for the military, but were no longer required due to the end of that conflict
GlennSprigg:

--- Quote from: TimFox on June 25, 2020, 02:47:18 am ---Are you sure there are 6AU6s in that lineup?  The others are all octals, but the 6AU6 is 7-pin miniature.

--- End quote ---

Hi Tim.  Yes, they are actually the 7-pin miniatures, which surprised me!
ALL the other tubes are larger 'GT' Octal bases...  :-+
Maybe what 'vk6zgo' said above, explains it...  :)

P.S.
The Y61-or-Y63 Magic Eye is NOT installed, in my version?  Although it IS wired to a 'base'
hidden behind the dial-face, with a blanking plate that can just be seen in the center/left (whitish circle) in my photo
of the glass face. I will put one in though, all the same!!   ;D
THAT radio, when I get to it, will be the HYBRID one, with glossy/shiny/visible parts inside that I've always wanted.
Now can I SOMEHOW save/reproduce that 'smell'...   :-+
TimFox:
That is a surprise.  The 6SH7 octal is a close equivalent to the 6AU6 miniature.
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