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Telegraph Sounder

Telegraph Sounder

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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.
Location
Currently not on view
Object Name
telegraph receiver
telegraph sounder
maker
Longstreet, J. H.
Measurements
overall: 4 1/2 in x 5 1/8 in x 3 1/4 in; 11.43 cm x 13.0175 cm x 8.255 cm
ID Number
EM.181371
accession number
31175
catalog number
181371
Credit Line
from the Telegraphic Historical Society
subject
Communication, telegraph
See more items in
Work and Industry: Electricity
Data Source
National Museum of American History
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