Wheatstone-Morkrum type 1-B polar relay owned by Edwin Howard Armstrong

Description:

Telegraph relays amplify an electrical signal in a telegraph line. Telegraph messages travel as a series of electrical pulses through a wire from a transmitter to a receiver. The pulses fade in strength as they travel through the wire, limiting the distance a message can be sent. Relays remedy that problem by detecting a weak signal and automatically re-transmitting that signal down the line using a local power source.

Maker: Western Union CorporationMaker: Morkrum Teletype Co.

Location: Currently not on view

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

Exhibition:

Exhibition Location:

Credit Line: from Western Union Corporation

Data Source: National Museum of American History

Id Number: EM.331697Accession Number: 294351Catalog Number: 331697Collector/Donor Number: 15-43A

Object Name: Wheatstone relaypolar relaytelegraph relay

Physical Description: wood (part: material)metal (part: material)glass (part: material)Measurements: overall: 5 1/2 in x 5 in; 13.97 cm x 12.7 cm

Guid: http://n2t.net/ark:/65665/ng49ca746a7-1fd6-704b-e053-15f76fa0b4fa

Record Id: nmah_890931

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