Majestic Ch= 90 (chassis only)

Grigsby-Grunow (-Hinds) Co. (Majestic pre 1933); Chicago (IL)

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  • Year
  • 1929/1930
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 130251

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

 Technical Specifications

  • Number of Tubes
  • 7
  • Main principle
  • TRF without regeneration; 1 AF stage(s); Neutrodyne
  • Tuned circuits
  • 5 AM circuit(s)
  • Wave bands
  • Broadcast only (MW).
  • Power type and voltage
  • Alternating Current supply (AC) / 100-130 Volt
  • Loudspeaker
  • Electro Magnetic Dynamic LS (moving-coil with field excitation coil)
  • Material
  • Metal case
  • from Radiomuseum.org
  • Model: Majestic Ch= 90 - Grigsby-Grunow -Hinds Co.
  • Shape
  • Chassis only or for «building in»
  • Notes
  • The 90 is only the chassis employed for the console models 91 and 92. It needs Power Supply 9P3 or 9P6. It is the predecessor of chassis 90-B where an integral Power Supply was employed. Don't confound it with the console model 90, which used the chassis 90-B.
    Please no pictures of cabinets here. They belong to the relevant models.
  • Circuit diagram reference
  • Rider's Perpetual, Volume 1 = 1931/1934 (for 1919-1931)

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