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Inra 301

Country:  Austria
Manufacturer / Brand:  Technica; Wien: Marke Inra
alternative name
Rabinowitsch & Co
Year: 1929/1930 Category: Power supply/conditioner or battery or charger 
Valves / Tubes 1: GW634
Details Power: B-Battery Eliminator
Power type and voltage Alternating Current supply (AC) / 110-220 Volt
Loudspeaker - For headphones or amp.
Power out
from Model: Inra 301 - Technica; Wien: Marke Inra
Notes Heizanode [RA2909, Kat.Primoris 1930]
Price in first year of sale 67.00 öS
External source of data E. Erb 3-907007-36-0
Source of data Radiokatalog Band 2, Ernst Erb
Mentioned in Radio-Amateur Wien (RA, 46), (Österreichischer Radio Amateur, ÖRA) (3009)

All listed radios etc. from Technica; Wien: Marke Inra
Here you find 110 models, 7 with images and 0 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.