• Country
• United States of America (USA)

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

• Year
• 1929

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 38134

• Number of Tubes
• 8

• Valves / Tubes

• Power type and voltage
• Alternating Current supply (AC)

• Material
• Wooden case

• from Radiomuseum.org
• Model: DuoConcerto C5F [HB] - Electrical Research

• Shape
• Console, Highboy (legs > 50 %).

• Notes
• One dial (primary tuning control knob)

• Price in first year of sale
• 119.00 $

• External source of data
• Ernst Erb

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

• Mentioned in
• The Radio Collector's Directory and Price Guide 1921 - 1965

• 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