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. This high resistance sounder was made for use on long, so-called "main" lines.

Maker: Manhattan Electric Supply Co.

Location: Currently not on view

See more items in: Work and Industry: Electricity, Communications, Telegraph Sounders


Exhibition Location:

Credit Line: from Western Union Corporation

Data Source: National Museum of American History

Id Number: EM.332368Accession Number: 294351Collector/Donor Number: 06-29Catalog Number: 332368

Object Name: telegraph receivertelegraph sounder

Physical Description: wood (overall material)brass (overall material)rubber (overall material)Measurements: overall: 4 3/8 in x 3 in x 5 1/2 in; 11.1125 cm x 7.62 cm x 13.97 cm


Record Id: nmah_891421

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