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Robert H. Weitbrecht and James C. Marsters TTY modem

 Collection
Identifier: RITDSA-0075

Scope and Contents

The Robert H. Weitbrecht James C. Marsters TTY modem collection contains two metallic boxes with electronic circuitry inside that made up the acoustic telephone coupler (now known as a TTY modem) used by Dr. James C. Marsters in the first TTY telephone call between two deaf persons (May 1964).

Dates

  • 1964

Creator

Conditions Governing Access

This collection is open to researchers.

Biographical / Historical

In May 1964, Dr. James C. Marsters (1924-2009) in Pasadena, California and Robert H. Weitbrecht (1920-1985) in Redwood City, California made history with the first long distance TTY phone call between two deaf persons using a regular telephone line. Weitbrecht came up with the idea of using an acoustic coupler to connect two Teletype machines. The device produced a different audio signal for each key on the teletypewriter.

Over the years to follow, Weitbrecht, a physicist, collaborated with Marsters, an orthodontist, and Andrew Saks, a deaf engineer, to develop improved modems that would work effectively with teletypewriters. The first improved designs included an acoustic coupler that converted audio tones received from the telephone handset resting in a cradle to typed messages on the teleprinter.

Extent

1.5 Linear Feet

Language

English

Overview

The Robert H. Weitbrecht James C. Marsters TTY modem collection contains two metallic boxes with electronic circuitry inside that made up the acoustic telephone coupler (now known as a TTY modem) used by Dr. James C. Marsters in the first TTY telephone call between two deaf persons (May 1964).

Arrangement

The collection contains three items.

Physical Location

On display on the first floor of The Wallace Center.

Immediate Source of Acquisition

This collection was donated to RIT Archive Collections by Harry G. Lang in 2007.

Accession number(s):2007:023

Bibliography

  • Lang, Harry G. A Phone of their Own: The Deaf Insurrection against Ma Bell. Washington, D.C.: Gallaudet University Press, 2000.

Processing Information

Finding aid created by Becky Simmons in July 2012.

Source

Creator

Title
Robert H. Weibrecht and James C. Marsters TTY modem
Subtitle
RIT/NTID Deaf Studies Archive
Status
Published
Author
Becky Simmons
Date
5 July 2012
Description rules
Describing Archives: A Content Standard
Language of description
Undetermined
Script of description
Code for undetermined script
Language of description note
English

Repository Details

Part of the RIT Archive Collections Repository

Contact:
RIT Libraries
Wallace Center
90 Lomb Memorial Drive
Rochester NY 14623 USA
(585) 475-4613