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Duplon ; Aeriola Ges.m.b.H.; (ID = 23548) Radio
Duplon ; Aeriola Ges.m.b.H.; (ID = 29274) Radio
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Duplon ; Aeriola Ges.m.b.H.; (ID = 29274) Radio
Aeriola Ges.m.b.H.;: Duplon [Radio] ID = 29274 574x640
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For model Duplon, Aeriola Ges.m.b.H.; Berlin
Country:  Germany
Manufacturer / Brand:  Aeriola Ges.m.b.H.; Berlin
Year: 1926/1927 Category: Broadcast Receiver - or past WW2 Tuner
Valves / Tubes 1: NZ420
Conflicting model year with tube data.
The model date contradicts tube dates. [ NZ420 (1927)]
Main principle TRF with regeneration; 1 AF stage(s)
Tuned circuits 1 AM circuit(s)
Power type and voltage Storage and/or dry batteries
Loudspeaker - For headphones or amp.
Power out
from Model: Duplon - Aeriola Ges.m.b.H.; Berlin
Material Wooden case, TUBES VISIBLE.
Dimensions (WHD) 160 x 120 x 130 mm / 6.3 x 4.7 x 5.1 inch
Notes Spulenkoppler
Net weight (2.2 lb = 1 kg) 1 kg / 2 lb 3.2 oz (2.203 lb)
Price in first year of sale 40.00 RM +
External source of data E. Erb 3-907007-36-0
Source of data Radiokatalog Band 2, Ernst Erb
Mentioned in Elektrotechnische Zeitschrift (ETZ) (2639)

All listed radios etc. from Aeriola Ges.m.b.H.; Berlin
Here you find 31 models, 22 with images and 7 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.