Object Details
- 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
- Data Source
- National Museum of American History
- Maker
- Western Union Corporation
- Credit Line
- from Western Union Corporation
- Physical Description
- metal (part: material)
- plastic (part: material)
- Measurements
- overall: 3 3/4 in x 1 in x 1 1/2 in; 9.525 cm x 2.54 cm x 3.81 cm
- Object Name
- polar relay
- relay
- telegraph relay
