Carbon granule radio microphone

Country:  Europe
Manufacturer / Brand:  Unknown Europe
alternative name
Unbekannt Europa
Year: 1921 ? Category: Microphone or Pick-up element
Wave bands - without
Power out
from Model: Carbon granule radio microphone - Unknown Europe
Material Various materials
Shape Tablemodel, with any shape - general.
Literature/Schematics (1) Le Guide du Collectionneur TSF Biraud/Foster, Vol. II (page 462)

Model page created by Ernst Erb. See "Data change" for further contributors.

All listed radios etc. from Unknown Europe
Here you find 188 models, 159 with images and 15 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.