• Year
  • 1928
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 34549
    • Brand: Counterphase

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

 Technical Specifications

  • Number of Tubes
  • 8
  • Main principle
  • TRF (Tuned-Radio-Frequency but use of regeneration unknown)
  • Power type and voltage
  • Alternating Current supply (AC) / 110 Volt
  • from Radiomuseum.org
  • Model: 7-70 - Bremer-Tully Mfg. Co.; Chicago
  • Shape
  • Tablemodel, with any shape - general.
  • Notes
  • One dial (primary tuning control knob).

    Three position tone control. Phono jack.

  • Price in first year of sale
  • 150.00 $
  • External source of data
  • Ernst Erb
  • Circuit diagram reference
  • Rider's Perpetual, Volume 1 = 1931/1934 (for 1919-1931)
  • Literature/Schematics (1)
  • -- Schematic (La Riparazione degli Apparecchi Radio Delforno-Colciago - Lavagnolo - Italy - 1941)

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