Telegraph Sounder

Description (Brief)
Telegraph sounders convert electrical pulses into audible sounds and are used to receive Morse code messages. The message travels as a series of electrical pulses through a wire. Short pulses make a dot, slightly longer pulses make a dash. The sequence of dots and dashes represent letters and numbers. The pulses energize the sounder’s electromagnets which move a lever-arm. The arm makes a loud “click” when it strikes a crossbar and the operator translates the pattern of sounds into the original language. While Western Electric is generally associated with making telephone equipment for the Bell System, they also made telegraph equipment during the time when Bell owned Western Union.
Location
Currently not on view
maker
Western Electric
Physical Description
wood (overall material)
brass (overall material)
rubber (overall material)
Measurements
overall: 3 1/2 in x 5 1/2 in x 3 in; 8.89 cm x 13.97 cm x 7.62 cm
ID Number
EM.332356
accession number
294351
catalog number
332356
collector/donor number
06-10
Credit Line
from Western Union Corporation
See more items in
Work and Industry: Electricity
Communications
Telegraph Sounders
Data Source
National Museum of American History, Kenneth E. Behring Center

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