Gray single tone Harmonic Telegraph Transmitter

Description (Brief):

Gray Harmonic Telegraph Transmitter. Steel reed hangs in front of one pole of an electromagnet. It will vibrate at a set frequency. There is a key, so the signal can be made and broken. Similar to cat # 324111. Magnet coil 2.5" long, 10 Ohms. Written on bottom in ink: "Second single tone transmitter / Edwd. H. Beebe Notary Public May 14, 1880."

Date Made: 1880

Maker: Gray, Elisha

Location: Currently not on view

See more items in: Work and Industry: Electricity


Exhibition Location:

Credit Line: from Oberlin College, Dept. of Physics, thru David L. Anderson

Data Source: National Museum of American History

Id Number: EM.324120Catalog Number: 324120Accession Number: 253039

Object Name: Transmitter, Telegraph, Single Tonetransmitter, telegraph,telegraph transmitter

Measurements: overall: 4 1/4 in x 6 in x 5 1/8 in; 10.795 cm x 15.24 cm x 13.0175 cm


Record Id: nmah_706277

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