TELECOM Digest OnLine - Sorted: Re: Very Early Modems

Re: Very Early Modems

Scott Dorsey (
24 May 2005 11:47:58 -0400

Brad Houser <> wrote:

> Here is a picture of a 1958 AT&T modem (not sure if this is the first
> commercial modem, the Bell 103. If so it was 300 baud):


No, the Bell 103 is a little plastic box only a little bit larger than
a Hayes external modem.

This appears to be a photograph of an encrypted data system using a
carrier key tape.


"C'est un Nagra. C'est suisse, et tres, tres precis."

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