• Year
  • 1939
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 168174

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

 Technical Specifications

  • Number of Tubes
  • 9
  • Main principle
  • Superhet with RF-stage; ZF/IF 460 kHz; 3 AF stage(s)
  • Tuned circuits
  • 7 AM circuit(s)
  • Wave bands
  • Broadcast and Short Wave (SW).
  • Power type and voltage
  • Alternating Current supply (AC) / 200-260 Volt
  • Loudspeaker
  • Electro Magnetic Dynamic LS (moving-coil with field excitation coil) / Ø 12 inch = 30.5 cm
  • Power out
  • 8 W (unknown quality)
  • Material
  • Wooden case
  • from Radiomuseum.org
  • Model: Radiola 280 - Amalgamated Wireless
  • Shape
  • Console with Push Buttons.
  • Notes
  • The Radiola 280, eight-valve* world range console with electric keyboard tuning.

    Features:

    • Extreme sensitivity and selectivity, Long-distance reception.
    • World Range -Local, Interstate, and Overseas Stations.
    • Radiola electric tuning
    •  New high-fidelity 12" loudspeaker
    • Supergain chassis
    • Convex quadrant dial,
    • Concentric controls
    • Magic Eye-tuning condenser
    • Improved automatic volume control
    • Stabilised oscillator
    • Air trimmers
    • Magnetic frequency-locked circuits
    • Multi-purpose "G" type valves,
    • Variable selectivity tone monitor
    • Acoustically correct cabinet
    • Automatic tone compensation
    • Ceramic temperature compensation
    • Impregnated components
    • Phonograph terminals.

    *The 6U5 tuning indicator was not included in the valve count.

     

     

  • Price in first year of sale
  • 49.00 Aus£
  • Circuit diagram reference
  • Australian Official Radio Service Manual Vol. III
  • Literature/Schematics (2)
  • -- Original prospect or advert (Recorder (SA) Jun 1, 1939 Page 4)
  • Author
  • Model page created by Stuart Irwin. See "Data change" for further contributors.

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