• Year
  • 1928
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 156841

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

 Technical Specifications

  • Number of Tubes
  • 4
  • Main principle
  • TRF (Tuned-Radio-Frequency but use of regeneration unknown); Screengrid 1926-1935
  • Tuned circuits
  • 2 AM circuit(s)
  • Wave bands
  • Broadcast only (MW).
  • Loudspeaker
  • - For headphones or amp.
  • from Radiomuseum.org
  • Model: 7 - Trav-Ler Karenola Radio &
  • Notes
  • Different power packs are used for AC or DC supply (see power pack 7 AC and 7 DC); one dial (primary tuning control knob).
  • Circuit diagram reference
  • Rider's Perpetual, Volume 1 = 1931/1934 (for 1919-1931)

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