Drake Standing Wave Ratio calculator
name: label: maker
content: Drake Company
notes: label: Description (Brief)
content: A plastic table for calculating the standing wave ratio of radio waves. Most likely used by a radio amateur since Drake was a noted manufacturer of HAM equipment. Printed on front: "S.W.R. Calculator / R. L. Drake Co. Miamisburg, Ohio"; and three columns labeled: "Forward" (graduated 10 to 2000), "V.S.W.R" (graduated 1.05 to 10, then infinity), "Reflected" (graduated 1.0 to 100).
label: Description (Brief)
content: In the era before smart phones and electronic calculators, engineers used calculators like this one to quickly solve problems and complete complex mathematic functions. This unit was made by radio manufacturer Drake to determine standing wave ratio, an important parameter for radio transmissions.
label: Location
content: Currently not on view
setName: label: See more items in
content: Work and Industry: Electricity
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: 2022.0278.03
label: accession number
content: 2022.0278
label: catalog number
content: 2022.0278.03
objectType: label: Object Name
content: pocket calculator
physicalDescription: label: Measurements
content: overall: 5 1/4 in x 3 in x 1/32 in; 13.335 cm x 7.62 cm x .07938 cm