[GreenKeys] Re: GB> Sperry Gyroscope Teletest

Roy Morgan [email protected]
Wed, 14 Jan 2004 14:26:10 -0500


Doug, I have forwarded this message to the Greenkeys list.
The thing may very well be useful to teletype guys (like me)

Roy


At 10:53 AM 1/14/04 -0800, you wrote:
>Here's one for the oldtimers who have experience in commercial data
>transmission, teletype in particular.  A fellow came into my office
>yesterday with this unit he said he found in the dump.  It was made by
>Sperry Gyroscope Ltd. in Ottawa, Ontario Canada, a division of Sperry Rand
>Corp.  Both of these entities were absorbed long ago by first Remington and
>then Unisys, I believe.  The unit is called a Combination Teletest and has a
>tag on it that says it was last calibrated Dec. 1, 1978.  From the front
>panel, I think this thing was used to test teletype equipment.  It has stuff
>like a series of toggle switches that say "MARK" and "SPACE" on them as well
>as an adjustment for baud rate, from 12 to 1200 baud.  There is also a meter
>that says % Distortion.  There are two BNC connectors that say INPUT LOOP
>and OUTPUT LOOP.  It has a bunch of other doo-dads that I can't rmember at
>the moment.
>
>Anyone ever seen or worked with one of these?  It's obviously of no use
>anymore but curiosity has me wondering.  Thanks for any info.
>
>Doug  VA7DD
>
>
>Doug Davies
>Tenures/WoodlotForester
>Kalum Forest District
>Terrace, B.C.
>250)-638-5125
>(250)-638-5176 Fax
>MailTo:[email protected]

- Roy Morgan, K1LKY since 1959 - Keep 'em Glowing!
7130 Panorama Drive, Derwood MD 20855
Home: 301-330-8828 Work: Voice: 301-975-3254,  Fax: 301-948-6213
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