• 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
• 38149

• Number of Tubes
• 5

• Valves / Tubes

• Main principle
• Special principle (see notes)

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• Storage and/or dry batteries

• from Radiomuseum.org
• Model: Monodic Ch= S5 [89$] - Electrical Research

• Notes

• Two dials (primary tuning control knobs)

• Price in first year of sale
• 89.00 $

• External source of data
• Ernst Erb

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

• Other Models

• Here you find 135 models, 49 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