Robert H. Weibrecht and James C. Marsters TTY modem

RIT/NTID Deaf Studies Archive

Table of Contents

Collection Overview
Biographical/Historical Information
Scope and Content
Arrangement
Subject Headings
Information for Researchers
Administrative Information
Related Materials
Bibliography

Collection Overview (Collapse)

Title
Robert H. Weitbrecht and  James C. Marsters TTY modem
Creator - Inventor
Marsters, James C.
Creator - Inventor
Weitbrecht, Robert H.
Date(s)
1964
Abstract
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).
Extent
1.5 Linear feet
Location
On display on the first floor of The Wallace Center.
Repository
RIT Archive Collections
RIT Libraries
Wallace Center
90 Lomb Memorial Drive
Rochester, New York, 14623
(585) 475-2557
raswml@rit.edu
Language
English

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Biographical/Historical Information (Collapse)

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.

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Scope and Content (Collapse)

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).

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Arrangement (Collapse)

The collection contains three items.

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Subject Headings (Collapse)

Personal Name(s)

  • Marsters, James C.
  • Weitbrecht, Robert H.
  • Lang, Harry G.

Subject(s)

  • Deaf -- Means of communication
  • Teletypewriters

Genre(s)

  • Telecommunications devices for the deaf -- United States -- History

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Information for Researchers (Collapse)

Preferred Citation

Robert H. Weitbrecht and James C. Marsters TTY modem, RIT Deaf Studies Archive

Restrictions on Access

This collection is open to researchers.

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Administrative Information (Collapse)

Collection ID

RITDSA.0075

Accession Information

Accession number(s): 2007:023

Source of Acquisition

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

Processing Information

Finding aid created by Becky Simmons in July 2012.

Revision Description

 Added collections to related material statement 3 December 2012

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Related Materials (Collapse)

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Bibliography (Collapse)

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

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