Anderson Jacobsen ADC 300 modem - test-drb@ccmp.vtda.org

26 Oct 2000

From: John Allain &lt;John.Allain(a)donnelley.infousa.com&gt;

...
 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