Telstar wave guide filter
date: label: date made
content: 1963
name: label: maker
content: Bell Laboratories
notes: label: Description (Brief)
content: Telstar wave guide filter. Unit is filter #5 from the Telstar repeater, a five-section direct-coupled filter having a center frequency of 4080 MHz and a half-power bandwidth of 20 MHz; the insertion loss at 4080 MHz is less than 1 db. Filter was made as narrow band as space allowed to give high insertion losses except at 4080 MHz. In order to position the unit in a canister of reasonable size it was necessary to build the filter with a 90o E-plane bend in one of the cavities. Made of magnesium. Reference: Bell System Technical Journal 4, part 1 (July 1963), pages 831-867. Photograph on page 836.
label: Location
content: Currently not on view
setName: label: See more items in
content: Work and Industry: Electricity
creditLine: label: Credit Line
content: from American Telephone & Telegraph
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: EM.322972
label: catalog number
content: 322972
label: accession number
content: 247512
objectType: label: Object Name
content: Wave Guide, Part of
label: Object Name
content: wave guide component
physicalDescription: label: Measurements
content: overall: 1 in x 18 3/4 in; 2.54 cm x 47.625 cm