• Country
• United States of America (USA)

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

• Year
• 1931 ?

• Category
• Pre-stage (adaptor for SW/FM/VHF/UHF incl. built-in), Frequency converter

• Radiomuseum.org ID
• 38070

• Number of Tubes
• 3

• Valves / Tubes

• Main principle
• RF Converter/Adapter (not voltage converter)

• Wave bands
• Short Wave (SW only)

• from Radiomuseum.org
• Model: Short Wave Converter [Console?] - Electrical Research

• Shape
• Console with any shape - in general

• Notes
• SW-Converter. Radio collectors Guide 1921-1932 notes a console. That is unlikely for a converter.

• Price in first year of sale
• 12.00 $

• External source of data
• Ernst Erb

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

• Other Models

• Here you find 133 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