Re: IBM 9020 FAA/ATC Systems from 1960's

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#210961

From: jav... John Varela
Date: Thu, 02 Aug 2001 00:17

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On Wed, 1 Aug 2001 16:03:07, ja...@jata-mj.net (Julian Thomas) wrote:

> >50 and 65.
>  
> Initially Mod 50.  The 65 version came later.

IBM's proposal included models 9020A, B, C, and D.  The A was all model 50s, 
the D was 50s and 65s.  I forget what the B and C were; none were bought.  
Maybe they included slow core memory; I know that was in the proposal 
somewhere.

You are correct that the first purchases were As, but as the software grew 
some As were changed to Ds before delivery, under the original contract 
provisions.

The 9020E was added to the series a couple of years later, when Raytheon 
started having trouble developing the display system.  IBM was contracted to 
develop the 9020E hardware and software to replace the Raytheon central 
equipment and Sanders was contracted to build a substitute radar display 
console.  In the upshot, Raytheon succeeded.  The Sanders console never went 
into production for FAA, but I think they sold some spin-offs commercially.  
9020Es were installed in about a half dozen of the busiest Centers; the others
had all-Raytheon display systems.

-- 
    John Varela

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Subject: Re: IBM 9020 FAA/ATC Systems from 1960's
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