15 Aug
2014
15 Aug
'14
6:55 p.m.
On Fri, 15 Aug 2014, William Donzelli wrote:
It looks like the Z-2177 was an improved 5965, designed by IBM and
produced by GE at the Owensboro, KY plant:
http://dome.mit.edu/bitstream/handle/1721.3/39427/MC665_r06_M-2374.pdf
http://dome.mit.edu/bitstream/handle/1721.3/40353/MC665_r13_M-3002.pdf
http://dome.mit.edu/bitstream/handle/1721.3/39796/MC665_r10_M-2955.pdf
http://dome.mit.edu/bitstream/handle/1721.3/39794/MC665_r10_M-2981.pdf
http://dome.mit.edu/bitstream/handle/1721.3/39778/MC665_r10_M-2815.pdf
http://dome.mit.edu/bitstream/handle/1721.3/39787/MC665_r10_M-2635.pdf
http://dome.mit.edu/bitstream/handle/1721.3/39810/MC665_r10_M-2722.pdf
http://dome.mit.edu/bitstream/handle/1721.3/46022/MC665_r14_6M-4386.pdf
It appears that GE was working on a redesigned Z-2177-3 (0528), but was
eventually told to stop the project:
http://dome.mit.edu/bitstream/handle/1721.3/45987/MC665_r14_6M-3674.pdf
A search for 0158 yielded no results.
Mike Loewen mloewen at cpumagic.scol.pa.us
Old Technology http://q7.neurotica.com/Oldtech/
I did some
searching through the Whirlwind archives at MIT, and believe
you're correct about the 6888. MIT worked with Sylvania to develop the
SR-1782A (6888), an improvement over the 7AK7 which was developed for the
Whirlwind system. The 6888 was used as a gate tube throughout the AN/FSQ-7.
Did you find any info about some of the other odd tubes used in the
machines? Specifically, I am thinking about the Z2177 (a GE
developmental number) and the strange number 0158 (yes, leading zero).
These are both unremarkable 9 pin minis, but it would be good to know
the background on them.