• Country
• United States of America (USA)

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

• Year
• 1931/1932

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 18602

• Number of Tubes
• 5

• Valves / Tubes
• 47 57 57 58 80

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• Alternating Current supply (AC) / 220 Volt

• Loudspeaker
• Electro Magnetic Dynamic LS (moving-coil with field excitation coil) / Ø 6.5 inch = 16.5 cm

• Material
• Wooden case

• from Radiomuseum.org
• Model: 50-P - Electrical Research

• Shape
• Table-Cathedral-Type (upright, round top or gothic arch, not rounded edges only).

• Dimensions (WHD)
• 385 x 330 x 230 mm / 15.2 x 13 x 9.1 inch

• Notes
• [3331455B]

• Net weight (2.2 lb = 1 kg)
• 6.8 kg / 14 lb 15.6 oz (14.978 lb)

• Price in first year of sale
• 370.00 SFR

• External source of data
• E. Erb 3-907007-36-0

• 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