heterodyne frequency meter
Datecirca 1936
Inventory NumberRS0192
ClassificationTest Equipment
Subject
Maker
General Radio Company
1915-present
Cultural Region
Place of Origin
Dimensions35 x 26 x 48 cm (13 3/4 x 10 1/4 x 18 7/8 in.)
Material
DescriptionA General Radio Co.-Cruft heterodyne frequency meter encased in a metal frame with bakelite knobs and glass fixtures.
Signedfront plate: HETERODYNE / FREQUENCY METER / TYPE NO. 616-D / SERIAL NO. 353 / (GR logo) / GENERAL RADIO CO. / CAMBRIDGE, MASS., U.S.A. / SEE LICENSE NOTICE
on face of meter: WESTON ELECTRICAL INSTRUMENT CORP., NEWARK, N.J., U.S.A. / MILLIAMPERES D.C. / WESTON / MODEL 506 TYPE / PAT. 1,579,849 1,635,595 1,661,214
Inscribedstamped in yellow on side: CRUFT
written in black on side: HET. FREQ. / METER / 616-D / #353
FunctionPossible function: General Radio pioneered in the development of quartz-crystal frequency standards, which were combined with multi vibrator dividers, heterodyne multipliers, and various modulation meters, etc. as complete monitoring assemblies for the nation's 200 or so radio broadcasters.
http://www.teradyne.com/corp/grhs/products_radio-broadcast.html
Possible date: http://artifaxbooks.com/fsgenrad.htm
http://www.teradyne.com/corp/grhs/products_radio-broadcast.html
Possible date: http://artifaxbooks.com/fsgenrad.htm
Historical AttributesCruft
Bendix Radio Division of Bendix Aviation Corporation
Date: circa 1943
Accessories: Spiral notebook of calibration tables stored underneath unit. Instruction manul (in object file).
Object number: 1995-1-0019
