• Year
  • 1959 ??
  • Category
  • Audio Amplifier or -mixer
  • Radiomuseum.org ID
  • 146649

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
  • Powered by external power supply or a main unit.
  • Loudspeaker
  • - For headphones or amp.
  • Material
  • Metal case
  • from Radiomuseum.org
  • Model: HF61A - EICO Electronic Instrument Co.
  • Notes
  • Externally powered preamplifier. Sams photofact set 487 folder 4 date 6-60 features the Eico models HF61 and HF61A as the same schematic.
  • Author
  • Model page created by Peter Hoddow. See "Data change" for further contributors.

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