Amrad model G1 quenched spark gap
date: label: date made
content: c. 1922
label: date made
content: ca 1922
name: label: maker
content: American Radio & Research Corporation
notes: label: Description (Brief)
content: Marked: "American Radio and Research Corporation / Sales Office: 21 Park Row, N.Y. / Plant: Medford Hillside, Mass. / Type G1 No. 293". On one copper fin: "AMRAD / N.Y. / Pat. Appd. for". Amrad model G1 quenched spark gap. The type G-1 AMRAD gap was designed for use with .75 K.V.A. or 1 K.V.A. transformers delivering 20,000 volts or more, maximum power 1 K.W. This gap has 64 gap plates and 32 sparking chambers. Manufacturer states that the unit meets Federal decrement regulations and operates with reduced noise. Original price: $41.50. Reference: "F.D. Pitts Co., Catalog No. 22, 1922(?), pages 69-70. (Clark Collection CL15).
label: Location
content: Currently not on view
setName: label: See more items in
content: Work and Industry: Electricity
creditLine: label: Credit Line
content: from Franklin Wingard
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: EM.320775
label: catalog number
content: 320775
label: accession number
content: 241556
objectType: label: Object Name
content: spark gap
physicalDescription: label: Measurements
content: overall: 7 1/2 in x 17 in x 5 1/4 in; 19.05 cm x 43.18 cm x 13.335 cm