Anderson Jacobsen ADC 300 modem

From: ajp166 <ajp166_at_bellatlantic.net>
Date: Thu Oct 26 18:34:54 2000

From: John Allain <John.Allain_at_donnelley.infousa.com>


>Anyway, as far as I can remember the thing had No IC's
>in it. It was all discrete components and dozen(s) of
>thimble sized things in it that I assumed were tuned
>inductors.
>Does this sound right? A Modem of completely analog
>devices?


They were analog right up to the 1200baud and even then
there was a fair amount of analog up till DSP got cheap
about 10 years ago.

I have a 110/300 baud that was used with a TTY back
before 78! nearly 11"x8"x2" box with a board crammed
mostly with O-amps (709/741 types).

Allison
Received on Thu Oct 26 2000 - 18:34:54 BST