Circa 1964 Livermore Data Systems "Model A" Acoustic Coupler Modem, live demonstration.
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EDIT: Photos and answers are on my blog at phreakmonkey.com
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Background: This modem was given to me ~1989 by the widow of a retired (IBM?) engineer. Computerhistory.org
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has a Model B dated 1965, and I've seen a ~1967 Model C written up in a magazine. (Interestingly, incorrectly identified as being only 110 baud.)
Even better than seeing it in a museum, I decide to hook the trusty Model A up and make it talk to something. After some trial and error, I manage to get it to talk to a terminal server at work and use it to connect to a linux box. It's ALIVE! So, 45 years after it's creation, this antique modem gets to send data to and from the modern Internet.
Enjoy!
- K.C.
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