Skip to main content
Advanced Search
Beat Frequency Oscillator
Beat Frequency Oscillator

Beat Frequency Oscillator

Inventory NumberRS0451
ClassificationTest Equipment
Maker General Radio Company 1915-present
Place of Origin
    Dimensions20 x 56 x 28 cm, 22 lb. (7 7/8 x 22 1/16 x 11 in., 10 kg)
    DescriptionOscillator, Beat Frequency; Type 413-B, Serial No. 193; General Radio Co. (General Radio Co-Cruft); Gift of George E. Cabot, Boston
    Signedetched and white filled, front right: BEAT FREQUENCY OSCILLATOR / TYPE 413-B SERIAL NO. 133 / GENERAL RADIO CO. / CAMBRIDGE, MASS.
    Inscribedetched on front panel, lower left: LICENSED FOR RADIO LABORATORY / EXPERIMENTAL USE ONLY WHERE NO / BUSINESS FEATURES ARE INVOLVED / PAT. NO. 1113148 OCTOBER 6 1914 on front of meter: WESTON ELECETRICAL INSTRUMENT CORP., NEWARK, N.J., U.S.A. / VOLTS D.C. / WESTON / MODEL 506 TYPE 1 01 / PATENTS PENDING on plate on top of lid: GIFT OF / MR. GEO. E. CABOT / BOSTON
    Historical AttributesCruft
    beat frequency oscillator
    beat frequency oscillator
    General Radio Company
    Date: circa 1931
    Object number: RS0197
    GR type 700-A beat-frequency oscillator
    GR type 700-A beat-frequency oscillator
    General Radio Company
    Date: 1939
    Object number: RS0409
    Wireless Specialty type I-P 310 load coil
    Wireless Specialty type I-P 310 load coil
    Wireless Specialty Apparatus Company
    Object number: RS0429
    Audio instrument, oscillator. Large rectangular body, wood frame on sides, black front panel and decorative grill on to pand back. On front panel, large dials, circular window for meter, pair of electrical connectors, indicator light and switches.
    Audio instrument, oscillator. Large rectangular body, wood frame on sides, black front panel and decorative grill on to pand back. On front panel, large dials, circular window for meter, pair of electrical connectors, indicator light and switches.
    General Radio Company
    Date: 1939
    Object number: RS0452
    Wireless Specialty type I-P 310 load coil
    Wireless Specialty type I-P 310 load coil
    Wireless Specialty Apparatus Company
    Object number: RS0428
    GR type 164 audibility meter
    GR type 164 audibility meter
    General Radio Company
    Object number: RS0468
    GR type 416 laboratory amplifier
    GR type 416 laboratory amplifier
    General Radio Company
    Date: circa 1922
    Object number: RS0605
    Precision Wavemeter, GR224-L , No.238
    Precision Wavemeter, GR224-L , No.238
    General Radio Company
    Object number: RS0427
    heterodyne frequency meter
    heterodyne frequency meter
    General Radio Company
    Date: circa 1936
    Object number: RS0192
    Large green wooden box of various parts including condensers.
    Large green wooden box of various parts including condensers.
    Object number: RS0295
    audio frequency meter 434-B
    audio frequency meter 434-B
    General Radio Company
    Date: c. 1930
    Object number: RS0247
    frequency meter-monitor 535-A
    frequency meter-monitor 535-A
    General Radio Company
    Date: early 20th Century
    Object number: RS0238