Anderson Jacobson A211 Acoustic Coupler

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An acoustic coupler is a device that allows a computer to transmit data over a standard telephone line by converting digital signals into audible tones and sending them through a telephone handset's speaker and microphone. The coupler physically holds the handset in rubber cups to minimise background noise and ensure sound transmission. 

Anderson Jacobson was primarily a manufacturer of acoustic coupler modems, but also manufactured printing terminals designed to replace teletypes. Anderson Jacobson began early in 1967 as a manufacturer of one of the first acoustic data couplers. By 1973, the company had acoustic coupler products that transmitted at 150, 300, 450 and 1200 baud.

The 1200-baud acoustic coupler is believed to have been the only device of its kind available in 1973.

Our Anderson Jacobson A211 Acoustic Coupler has a serial number of 30783 and was kindly donated by William H L Williams.

Date : 1967

Manufacturer : Anderson Jaobson

Format : acoustic coupler

Physical Description : Acoustic coupler

This exhibit has a reference ID of CH41824. Please quote this reference ID in any communication with the Centre for Computing History.
 

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