beat frequency oscillator
Datecirca 1931
Inventory NumberRS0197
ClassificationSignal Generator
Subject
Maker
General Radio Company
1915-present
Cultural Region
Place of Origin
Dimensions24 x 48 x 29 cm (9 7/16 x 18 7/8 x 11 7/16 in.)
Material
DescriptionA General Radio Co.-Cruft beat frequency oscillator mounted in walnut cabinet with bakelite front/knobs and glass as well as metal fixtures and metal handles on each side of cabinet.
Signedetched white fille on front panel, top right: BEAT / FREQUENCY OSCILLATOR / BATTERY OPERATED / TYPE 613-B SERIAL NO. 80 / GENERAL RADIO CO. / CAMBRIDGE, MASS.
in right meter: WESTON ELECTRICAL INSTRUMENT CORP., NEWARK, N.J., U.S.A. / MILLIAMPERES D.C. / WESTON / MODEL 506 TYPE F01 / PAT. 1,579,849 1,597,256 / 1,635,595 1,661,214
on left meter: WESTON ELECTRICAL INSTRUMENT CORP., NEWARK, N.J., U.S.A. / VOLTS D.C. / WESTON / MODEL 506 TYPE A01 / PAT. 1,579,849 1,597,256 / 1,635,595 1,661,214
FunctionPossible function: A Beat-Frequency oscillator was used to modulate a Standard Signal Generator to provide the antenna input to the receiver under test.
History of General Radio Company: http://www.teradyne.com/corp/grhs/products_radio-broadcast.html
History of General Radio Company: http://www.teradyne.com/corp/grhs/products_radio-broadcast.html
Historical AttributesCruft
![precision wavemeter, General Radio model No. 224, Serial No. 113 [?]](/internal/media/dispatcher/44354/postagestamp)
General Radio Company
Date: early 20th Century
Object number: RS0243b
