Local relay for cable telegraph service
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Object Details
- Western Union Corporation
- 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.
- Location
- Currently not on view
- Credit Line
- from Western Union Corporation
- ID Number
- EM.331830
- collector/donor number
- 100-101
- accession number
- 294351
- catalog number
- 331830
- Object Name
- cable relay
- relay
- telegraph relay
- Physical Description
- wood (part: material)
- metal (part: material)
- Measurements
- overall: 3 3/4 in x 10 in x 5 in; 9.525 cm x 25.4 cm x 12.7 cm
- See more items in
- Work and Industry: Electricity
- Communications
- National Museum of American History
- Record ID
- nmah_891036
- Metadata Usage (text)
- CC0
- GUID (Link to Original Record)
- http://n2t.net/ark:/65665/ng49ca746a7-26bc-704b-e053-15f76fa0b4fa
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