• Country
• United States of America (USA)

• Manufacturer / Brand
• Electrical Research Laboratories Inc. (Erla); Chicago, Illinois

• Year
• 1926

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 38152

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

• Number of Tubes
• 6

• Valves / Tubes
• UX201A UX201A UX201A UX201A UX201A UX201A

• Main principle
• TRF without regeneration; 3 AF stage(s); Neutrodyne

• Tuned circuits
• 3 AM circuit(s)

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• Storage and/or dry batteries / 5 & 45 & 90 & 9 Volt

• Loudspeaker
• - This model requires external speaker(s).

• Material
• Wooden case

• from Radiomuseum.org
• Model: Monodic Ch= S50 [6 tube table version] - Electrical Research

• Shape
• Tablemodel, Box - most often with Lid (NOT slant panel).

• Notes

• 3 RF stages.

  2 dial - 3 tuning capacitors. The right hand dial drives 2 tuning capacitors. 

  Grid-leak detector.

  There is also a version with 5 tubes. The exact difference is not known.

   

• Price in first year of sale
• 146.00 $

• External source of data
• Ernst Erb

• Source of data
• Radio Collector`s Guide 1921-1932

• Other Models

• Here you find 134 models, 47 with images and 61 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Electrical Research Laboratories Inc. (Erla); Chicago, Illinois