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
- date made
- ca 1880
- maker
- J. H. Bunnell & Co.
- Measurements
- overall: 3 1/4 in x 3 1/4 in x 5 3/4 in; 8.255 cm x 8.255 cm x 14.605 cm
- ID Number
- EM.181372
- accession number
- 31175
- catalog number
- 181372
- 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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