• Year
  • 1931 ?
  • Category
  • Audio Amplifier or -mixer
  • Radiomuseum.org ID
  • 52650

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

 Technical Specifications

  • Number of Tubes
  • 2
  • Wave bands
  • - without
  • Power type and voltage
  • Storage and/or dry batteries / 6 & 9 & 135 Volt
  • Loudspeaker
  • - For headphones or amp.
  • from Radiomuseum.org
  • Model: PMA-2 - Radio Receptor Co. Inc.; New
  • Notes
  • This model works as a microphone pre-amplifier.
  • Circuit diagram reference
  • Rider's Perpetual, Volume 3 = 1933 and before
  • Author
  • Model page created by Peter Rutishauser. See "Data change" for further contributors.

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