• Year
  • 1946/1947
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 41877
    • Brand: Musaphonic

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

 Technical Specifications

  • Number of Tubes
  • 5
  • Main principle
  • Superhet with RF-stage; ZF/IF 455 kHz; 2 AF stage(s)
  • Tuned circuits
  • 8 AM circuit(s)
  • Wave bands
  • Broadcast only (MW).
  • Power type and voltage
  • Line / Batteries (any type) / 105-125 / 2 Volt
  • Loudspeaker
  • Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 5 inch = 12.7 cm
  • Material
  • Metal case
  • from Radiomuseum.org
  • Model: 250 - General Electric Co. GE;
  • Shape
  • Portable set > 8 inch (also usable without mains)
  • Dimensions (WHD)
  • 14.5 x 10 x 6 inch / 368 x 254 x 152 mm
  • Notes
  • Early rechargable portable utilizing 2V/25AH Lead-Acid battery. Power supply has synchronous vibrator. Available case colors include brown and green. Built in loop antenna.

    Case is made of cast aluminum construction with hammertone paint finish. Has 3 position tone switch. Lead acid 2V cell must be in the circuit for operation on AC current as it provides filtering and reference voltage for tube filaments.

  • Net weight (2.2 lb = 1 kg)
  • 19.75 lb (19 lb 12 oz) / 8.967 kg
  • Price in first year of sale
  • 86.60 $
  • External source of data
  • Ernst Erb
  • Circuit diagram reference
  • Rider's Perpetual, Volume 15 = 1947 and before
  • Literature/Schematics (3)
  • General Electric Folder 1000M-PUB.NO. 175-59 for 1947.

 Collections | Museums | Literature

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The model 250 is part of the collections of the following members.

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