• Year
  • 1933
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 43659

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

 Technical Specifications

  • Number of Tubes
  • 6
  • Main principle
  • Superhet with RF-stage; ZF/IF 175 kHz
  • Tuned circuits
  • 6 AM circuit(s)
  • Wave bands
  • Broadcast only (MW).
  • Power type and voltage
  • Direct Current supply (DC) / 32 Volt
  • Loudspeaker
  • Electro Magnetic Dynamic LS (moving-coil with field excitation coil)
  • Material
  • Wooden case
  • from Radiomuseum.org
  • Model: Majestic 491 Fireside Ch= 490 - Grigsby-Grunow -Hinds Co.
  • Shape
  • Console with any shape - in general
  • Dimensions (WHD)
  • 15.25 x 16.5 x 9.375 inch / 387 x 419 x 238 mm
  • Notes
  • Farm radio; vibrator for +B.

    R17 is a special Globar resistor connected across the plates of the rectifier tube in place of a spark gap and resistor.  This resistor has a value of 500,000 ohms at 750 volts D.C., and a value of 1500 ohms at 2000 volts D.C. (See Majestic model 116A-Type 4 in Rider's volume 3, page Majestic 3-44)

  • External source of data
  • Ernst Erb
  • Circuit diagram reference
  • Rider's Perpetual, Volume 4 = ca. 1934 and before
  • Literature/Schematics (3)
  • The Majestic Folder "Smart Set".

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