Radio Frequency Measuring Instruments
name: label: Collection Creator
content: Clark, George Howard, 1881-1956
setName: label: See more items in
content: George H. Clark Radioana Collection
unitdate: label: Date
content: 1903-1946
dataSource: label: Archival Repository
content: Archives Center, National Museum of American History
identifier: label: Identifier
content: NMAH.AC.0055, Series 74
objectType: label: Type
content: Archival materials
scopecontent: label: Scope and Contents note
content: Series 74 contains information about high-frequency, indicating and measuring instruments. It includes data and photos on hot-wire and hot-band ammeters (radiation meters); wave meters and decremeters; thermal couples; stroboscopes; and oscillographs. News clippings from books, newspapers, and magazines; descriptions; instructions; notes; Special Radio Reports; illustrations of apparatus; bulletins and portions of bulletins; pamphlets; catalogues; lectures; patents; blueprints; diagrams; graphs; and drawings. Transmitter adjustments and methods of tuning by wave meter are covered by Series 117, Technical Tables.