3 stage audio amplifier
Inventory Number: RS0341
Classification: Amplifier
Subject:
Maker: General Radio Company (1915-present)
Place of Origin:
Dimensions:
24 x 42 x 23 cm, 19 lb. (9 7/16 x 16 9/16 x 9 1/16 in., 8.6 kg)
Accessories: 3 loose transformers inside mounted on 4-pronged plug.
Description:
Amplifier, Audio, 3 stage, General Radio Mod. ??, Ser# ??
In Collection(s)
Signedon face of right meter: PAT. NOV. 6, '88 APR. 29, '90 FEB. 17, '91 OCT. 4, '98 JULY 16, '01 / WESTON VOLTMETER / WESTON ELECTRICAL INSTRUMENT CORP., NEWARK, N.J., U.S.A. / MODEL 301 NO. 484622
on face of left meter: PAT. NOV. 6, '88 APR. 29, '90 FEB. 17, '91 OCT. 4, '98 JULY 16, '01 / WESTON MILLIAMMETER / WESTON ELECTRICAL INSTRUMENT CORP., NEWARK, N.J., U.S.A. / MODEL 301 NO. 425194
stamped on top of transformers: GENERAL RADIO / COMPANY
on condenser: PAPER CONDENSER / TYPE 236 M.F. .5 / TESTED AT 500 V DC / GENERAL RADIO CO. / CAMBRIDGE, MASS.
on face of left meter: PAT. NOV. 6, '88 APR. 29, '90 FEB. 17, '91 OCT. 4, '98 JULY 16, '01 / WESTON MILLIAMMETER / WESTON ELECTRICAL INSTRUMENT CORP., NEWARK, N.J., U.S.A. / MODEL 301 NO. 425194
stamped on top of transformers: GENERAL RADIO / COMPANY
on condenser: PAPER CONDENSER / TYPE 236 M.F. .5 / TESTED AT 500 V DC / GENERAL RADIO CO. / CAMBRIDGE, MASS.
Inscribedplate on front: GIFT OF / MR. GEO. CABOT / BOSTON
painted on side of transformer: RATION 1:2 / (GR logo) / TYPE 285
painted on sides of 2 transformers: RATION 1:6 / (GR logo) / TYPE 285
painted on side of transformer: RATION 1:2 / (GR logo) / TYPE 285
painted on sides of 2 transformers: RATION 1:6 / (GR logo) / TYPE 285