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Image Not Available for GR type 514-AR amplifier
GR type 514-AR amplifier
Image Not Available for GR type 514-AR amplifier

GR type 514-AR amplifier

Datecirca 1931
Inventory NumberWJ0321
ClassificationAmplifier
Subject
    Maker General Radio Company 1915-present
    Dimensions21 x 38.6 x 31.1 cm, 5 lb. (8 1/4 x 15 3/16 x 12 1/4 in., 2.3 kg)
    Accessories9 batteries (removed during FAE inventory - 11/2010).
    In Collection(s)
    Signedin white on front, top left: AMPLIFIER / TYPE 514-AR SERIAL NO. 153 / GENERAL RADIO CO. / CAMBRIDGE MASS.
    GR type 514-A amplifier
    General Radio Company
    Date: 1931
    Accessories: 5 batteries (removed during FAE inventory): three (3) Burgess #5308, 45 Volt "B" batteries and two (2) Bright Star No. 6, 1 1/2 volts dry cell batteries
    Object number: RS0670
    GR Universal radio receiver
    General Radio Company
    Date: circa 1926
    Accessories: 3 batteries (removed during FAE inventory).
    Object number: RS0404
    Sonic Amplifier, labeled "G.W.P. - A.N.", No. 11
    George Washington Pierce
    Accessories: 3 batteries (removed during FAE inventory).
    Object number: RS1290
    Amplifier, sonic,  0-100Kc, GWP-PK no 12
    George Washington Pierce
    Date: date
    Accessories: 3 batteries (removed during FAE inventory).
    Object number: RS1341
    Home made audio power amplifier
    Accessories: 4 batteries (removed during FAE inventory).
    Object number: RS1340
    piezoelectric oscillator,  type 275
    General Radio Company
    Date: ca. 1924-1926
    Accessories: crystal unit; removable coil; 3 (?) batteries (removed during FAE inventory).
    Object number: RS0655
    Kennedy type 525 two-stage audio amplifier
    Colin B. Kennedy Company
    Date: 1921
    Accessories: 1 battery (removed during FAE inventory). Burgess "C" battery.
    Object number: RS0270
    twin magnetostriction oscillator
    General Radio Company
    Date: circa 1926
    Accessories: 3 batteries (removed during FAE inventory).
    Object number: RS0205
    magnetostriction oscillator
    General Radio Company
    Date: 1926-1930
    Accessories: 2 batteries (removed during FAE inventory).
    Object number: RS0342
    amplifier-detector, Type B, no 1
    Jefferson Physical Laboratory, Harvard University
    Date: 1925-1935
    Accessories: 1 battery (removed during FAE inventory), 1 tube, 2 other pieces.
    Object number: RS1133
    Aurophone Hearing Aid
    Mears Radio Hearing Device Corporation
    Accessories: Shared with W0482 (found in one box together): 3 batteries (removed during FAE inventory). Rectangular case. 1 double sided battery connector. 1 double sided battery connector with attached thick twisted cord, end split with discoidal plugs, 1 2-pronged and 1 3-pronged. 4 thick black twisted cords with 5-pronged plug at one end and 5 whole socket at the other. 1 miscellaneous cord with tape. 1 cord with discoidal socket at one end and stripped at the other end. 1 2-pronged rectangular plut with thick cord, other end wrapped in tape. 2 twisted black cords with rectangular attachement with flared top and 2 single prongs at the other end.
    Object number: WJ0483
    Aurophone Hearing Aid
    Mears Radio Hearing Device Corporation
    Accessories: Shared with WJ0483 (found in one box together): 3 batteries (removed during FAE inventory). Rectangular case. 1 double sided battery connector. 1 double sided battery connector with attached thick twisted cord, end split with discoidal plugs, 1 2-pronged and 1 3-pronged. 4 thick black twisted cords with 5-pronged plug at one end and 5 whole socket at the other. 1 miscellaneous cord with tape. 1 cord with discoidal socket at one end and stripped at the other end. 1 2-pronged rectangular plut with thick cord, other end wrapped in tape. 2 twisted black cords with rectangular attachement with flared top and 2 single prongs at the other end.
    Object number: WJ0482