• Year
  • 1930 ?
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 120743

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

 Technical Specifications

  • Number of Tubes
  • 1
  • Main principle
  • TRF with regeneration
  • Tuned circuits
  • 1 AM circuit(s)     1 FM circuit(s)
  • Wave bands
  • Broadcast and Short Wave (SW).
  • Power type and voltage
  • Storage and/or dry batteries
  • Loudspeaker
  • - For headphones or amp.
  • Material
  • Metal case, TUBES VISIBLE
  • from Radiomuseum.org
  • Model: Multi-Unit Model B - Walker, George W. Co.
  • Shape
  • Miscellaneous shapes - described under notes.
  • Dimensions (WHD)
  • 5 x 2.5 x 7.5 inch / 127 x 64 x 191 mm
  • Notes
  • Wave range 15 to 550 meters. Can act as a short wave receiver, short wave adaptor, BC receiver, Screen grid pre-amp, RF booster, RF oscillator, crystal receiver, wave meter, or wave trap. Similar to original Geo W Walker Mult-Unit but has an extra variable capacitor, 5-pin coil socket and has a bronze colored mottled aluminium metal casing. Tube and coil are exposed on the top face of the casing. Also on upper face there is one vernier tuning dial, two small dials labeled VOL and ANT, 8 numbered terminals and a removable grid leak. On one of the side faces there is dial labeled Rheostat and a ground terminal.
    Almost any UV or UX base standard tube may be employed, and even 5-prong (eg screen grid types) by use of an appropriate adapter.
  • Net weight (2.2 lb = 1 kg)
  • 1 kg / 2 lb 3.2 oz (2.203 lb)
  • Price in first year of sale
  • 16.00 $
  • Source of data
  • -- Original prospect or advert
  • Author
  • Model page created by Charles Baetsen. See "Data change" for further contributors.

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