[GreenKeys] A first look inside the Pasco 35 ASR

Sat Aug 8 22:22:49 EDT 2015

answer back  electronics?  diode coded? 
ed#

In a message dated 8/8/2015 7:01:07 P.M. US Mountain Standard Time,  
pete at petelancashire.com writes:

Added a couple pictures of three of the boards from the 9140 to  the album 
"35 ASR First Look" , they are at the bottom  

https://goo.gl/photos/ia3pxMajyJXu5EeK7

On Sat, Aug 8, 2015 at 12:20 PM, Jim Haynes <_jhhaynes at earthlink.net_ 
(mailto:jhhaynes at earthlink.net) > wrote:

On  Sat, 8 Aug 2015, Jack wrote:

I  am sure Professor Haynes can provide more  info.

No, you guys from the operating companies  know a lot more than I do
about such things, especially such things as  came after I left Teletype.

I'm familiar with the 81D1 just from  having studied it in my spare
time.  There was a selective calling  system being made at Teletype
while I was there - that might have been  the 8A1.  I just remember it
was 8-level and the control station was  built into a cabinet similar
to that of a Model 35 printer.  Had a  bunch of lighted lever switches
where I think the light indicated the  outlying station was responding,
or maybe not responding, and the switch  could cause a station to be
bypassed in the polling sequence.

Then  G.E. with the Datanet-30 computer had an application that could 
emulate the  station controller of the 82B systems, and store messages on disk.   
Thus the customer could keep Bell System service for all the outlying  
stations but avoid the cost of the Bell station controller at the master  
station.  And messages could be passed to a computer for  processing.  IBM and 
Collins Radio had computers fitting into the same  kind of system, tho I don't 
know if they had specifically an 82B- controller  replacement program.  IBM 
no doubt preferred to sell systems that  employed their Selectric typewriter 
terminals.  Collins was  closer
to the airline industry, so they were probably replacing 81D1  systems,
as well as the "Developmental Line-Switched" system that Bell  did for
Delta Airlines and later United.  This employed the famous  "Delta Set"
28ASR with its autodialer and the LFXD tape reader that could  pull back
the tape and resend the message to multiple  addresses.

There's a book about Art Collins and his company.  A  passage concerns
their C-8400 communications computer, which was selling  very well and
had customers lining up to buy them.  But Art was  having a follow-on
system developed and thought it would be so much  better that he insisted
they accept no more orders for the C-8400.   I don't know if the follow-on
C-8600 system ever materialized.  The  book goes on to tell how Art
was obsessed with combining computing and  communication and ran his 
company into the ground trying to do it.  His  vision was good, but the
technology wasn't there yet.

ITT also had  a communication computer, but I believe it was made for them
by  DEC.  G.E. upper management decided the Datanet-30 was a  communication
product rather than a computer and moved it from the  computer department
in Phoenix to the communication products department  in Virginia.  That
probably finished it off; it was already  obsolescent.  And there was to
be a replacement called Datanet-355  but it was a much bigger and more
costly product and the market  apparently didn't need such a product.  

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