Amplifier 514-A

General Radio Company; Cambridge (MA)

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  • Year
  • 1931
  • Category
  • Service- or Lab Equipment
  • Radiomuseum.org ID
  • 272919
    • alternative name: GenRad

Click on the schematic thumbnail to request the schematic as a free document.

 Technical Specifications

  • Number of Tubes
  • 3
  • Main principle
  • Audio-Amplification
  • Wave bands
  • - without
  • Power type and voltage
  • Storage and/or dry batteries / 2 X 1.5 & 3 X 45 & 4.5 Volt
  • Loudspeaker
  • - This model requires external speaker(s).
  • Material
  • Metal case
  • from Radiomuseum.org
  • Model: Amplifier 514-A - General Radio Company;
  • Dimensions (WHD)
  • 381 x 209.55 x 311.15 mm / 15 x 8.3 x 12.2 inch
  • Notes

  • The General Radio 514-A is a battery operated audio amplifier.  Frequency range: 50cps to 50kc.  Uses Qty(2) 1.5V batteries for the filaments, Qty(3) 45V batteries for the plate circuits(B+) and either Qty(1) 4.5V battery or Qty(1) 22.5V battery with a 4.5V tap for the grid bias.

  • Mentioned in
  • -- Original prospect or advert (General Radio Co. Catalog F Part 3 (1931))
  • Author
  • Model page created by Peter Hoddow. See "Data change" for further contributors.

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