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Isofarad Kit

Country:  United States of America (USA)
Manufacturer / Brand:  Walbert Manufacturing Company; Chicago, IL
Year: 1926 Category: Kit (Parts plus instruction) or building instructions only
Valves / Tubes 5:
Main principle TRF (Tuned-Radio-Frequency but use of regeneration unknown)
Power out
from Model: Isofarad [Kit] - Walbert Manufacturing Company;
Material Various materials
Notes Three dials (primary tuning control knobs)
Price in first year of sale 75.00 $
External source of data Ernst Erb
Source of data Radio Collector`s Guide 1921-1932

All listed radios etc. from Walbert Manufacturing Company; Chicago, IL
Here you find 21 models, 5 with images and 1 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.