- on Test & Measurement
- Published in issue 5/2014 on page 80
Speedy 1200+ Acoustic Modem
Telecom authorities under pressure
Some of you may have heard of modems to enable a PC to “go online” to access BBSs in the dim past, but always with cable connections to the telephone network. Here we reminisce on the precursor of the wired modem: the acoustic coupler. Now a thing of the past, it blew the dust out of some telecom authority offices in the early 1980s.