On a recent surplus hunt, I picked up an Anderson Jacobson
ADC 300 baud acoustic coupler modem for $1. What a beauty - it's
in a wooden box with a flip-top lid and a brushed aluminum
interior panel. It has two DB-25 connectors, but one is used
to feed *in* the AC power (!). I haven't disassembled it yet.
I did a quick web search and one turns up in Megan Gentry's
collection. How old is this? It's serial number 759.
- John