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Short Wave Converter Console?

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
Valves / Tubes 3:
Main principle RF Converter/Adapter (not voltage converter)
Wave bands Short Wave (SW only)
Power out
from 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

All listed radios etc. from Electrical Research Laboratories Inc. (Erla); Chicago, Illinois
Here you find 131 models, 45 with images and 61 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.