IBM vacuum tubes

[William Donzelli]

GE did not make many tubes for IBM except for some made for SAGE devices.

--
Will

On Tue, Jun 16, 2020 at 11:38 AM Camiel Vanderhoeven via cctalk
<cctalk at classiccmp.org> wrote:
>
> Mosyt likely GE.
>
> "IBM did the final assembly, but more than 400 companies supplied parts and subassemblies for its computers, including GE for vacuum tubes and 3M for magnetic tapes.” (https://www.computerhistory.org/revolution/early-computer-companies/5/111)
>
> > On Jun 16, 2020, at 4:58 PM, Guy N. via cctalk <cctalk at classiccmp.org> wrote:
> >
> > On Mon, 2020-06-15 at 10:24 -0400, William Donzelli wrote:
> >>> While going through my assortment of old vacuum tubes looking for audio
> >>> treasures, I found a handful of IBM branded ones.  Mostly 5965, but
> >>> there's one 5963 mixed in.
> >>
> >> Who made them?
> >
> > Good question.  They have an IBM logo and "Made in USA", along with the
> > part number (5965 or 5963) and a bunch of numbers that might give a hint
> > as to manufacturer.  Any suggestions on how to decode them?
> >
> > These came to me from my father, who worked in the Vacuum Tubes
> > department at GE for a while when I was growing up, so there's a good
> > chance the OEM was GE.
>