Modem

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OBJECT TYPE
ACOUSTIC COUPLER
DATE
1973
ARTIFACT NUMBER
2000.0170.001
MANUFACTURER
Applied Communications Corp.
MODEL
PHONETYPE/TU-4
LOCATION
Belmont, California, United States of America

More Information


General Information

Serial #
J-6208
Part Number
1
Total Parts
1
AKA
N/A
Patents
N/A
General Description
METAL CASING & PARTS/ SYNTHETIC CONTROLS, POWER CORD, PARTS

Dimensions

Note: These reflect the general size for storage and are not necessarily representative of the object's true dimensions.

Length
29.0 cm
Width
24.2 cm
Height
6.9 cm
Thickness
N/A
Weight
N/A
Diameter
N/A
Volume
N/A

Lexicon

Group
Medical Technology
Category
Assistive technologies
Sub-Category
N/A

Manufacturer

AKA
Applied
Country
United States of America
State/Province
California
City
Belmont

Context

Country
Canada
State/Province
Ontario
Period
ca. 1973+
Canada
According to Ms. Vatcher-Ryan, in Canada Bell would provide teletypewriter so that deaf person with modem (such as Ms. Hebert) could communicate directly with others with same equipment. Originally this equipment was used by Ms. Hebert's mother, then by Ms. Vatcher-Ryan.
Function
Used with modified teletypewriter 2000.0169 to enable deaf and hard of hearing people to communicate using ordinary telephone lines. Modem converted TTY signals into tones that could be carried by voice band of telephone line (ref. 1).
Technical
Frequency shift acoustic coupler modem developed in 1963-1964 by Californians Robert Weitbrecht and James Marsters, both deaf or hard of hearing; it enabled two individuals to communicate using two teletypewriters. R.H. Weitbrecht Co. was founded in 1965 to manufacture modems. In 1967 it was replaced by Applied Communications Corp.
Area Notes
Unknown

Details

Markings
BLACK LETTERING ON FRONT READS "PHONETYPE/ U.S. PATENT NO. RE 27,595/ CANADIAN PATENT NO. 873,989/ APPLIED COMMUNICATIONS CORP./ BELMONT, CALIFORNIA"/ BLACK LETTERING ON FRONT FOR CONTROL FUNCTIONS/ GOLD LETTERING ON BLACK LABEL ON UNDERSIDE READING "MODEL TU-4 SERIAL J-6208"
Missing
APPEARS COMPLETE
Finish
TEXTURED BEIGE PAINTED CASING/ GOLD SYNTHETIC? COVERED FRONT PANEL/ BLACK SYNTHETIC PARTS/ GREY CORD
Decoration
N/A

CITE THIS OBJECT

If you choose to share our information about this collection object, please cite:

Applied Communications Corp., Modem, after 1973, Artifact no. 2000.0170, Ingenium – Canada’s Museums of Science and Innovation, http://collection.ingeniumcanada.org/en/id/2000.0170.001/

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