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@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@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. >
