Remler type 700 "Infradyne" radio amplifier
date: label: date made
content: ca 1926
name: label: maker
content: Remler Company Ltd.
notes: label: Description (Brief)
content: Marked: "Remler / Infradyne Amplifier / Type 700 / Patent Applied For / Gray & Danielson Mfg. Co. / San Francisco". Serial number 002546. Gray & Danielson Mfg. Co. used the trade name Remler and in the early 1930s adopted that as the company name. Unit is a commercial IF amplifier strip based on a circuit designed by E. M. Sargent. The intermediate frequency is 3600 kc, which is the sum of the local oscillator and the signal frequency. The image frequency is twice the IF less the signal frequency and thus varies from 6650 to 5700 kc. Three UX-199 tubes (missing) normally used. Case is copper with a bakelite panel. Binding posts are for battery, plate, and grid connections. Reference: Grote Reber, "Negative feedback a third of a century ago," IRE Proceedings, volume 47, number 7 (July 1959).
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.321499
label: accession number
content: 241556
label: catalog number
content: 321499
objectType: label: Object Name
content: radio amplifier
physicalDescription: label: Measurements
content: overall: 4 in x 16 1/8 in x 3 in; 10.16 cm x 40.9575 cm x 7.62 cm