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Transistor Detektor TDA

Transistor Detektor TDA; Stefra Marke, Rudolf (ID = 1494101) Crystal
 
Transistor Detektor TDA; Stefra Marke, Rudolf (ID = 142569) Crystal
 
Transistor Detektor TDA; Stefra Marke, Rudolf (ID = 1205401) Crystal
Transistor Detektor TDA; Stefra Marke, Rudolf (ID = 1516561) Crystal Transistor Detektor TDA; Stefra Marke, Rudolf (ID = 1516562) Crystal
Transistor Detektor TDA; Stefra Marke, Rudolf (ID = 142516) Crystal Transistor Detektor TDA; Stefra Marke, Rudolf (ID = 142523) Crystal
Transistor Detektor TDA; Stefra Marke, Rudolf (ID = 1493921) Crystal Transistor Detektor TDA; Stefra Marke, Rudolf (ID = 142519) Crystal
Transistor Detektor TDA; Stefra Marke, Rudolf (ID = 1493922) Crystal Transistor Detektor TDA; Stefra Marke, Rudolf (ID = 1493923) Crystal
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Transistor Detektor TDA; Stefra Marke, Rudolf (ID = 1516561) Crystal
Stefra Marke, Rudolf: Transistor Detektor TDA [Crystal] ID = 1516561 698x933
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For model Transistor Detektor TDA, Stefra (Marke), Rudolf Franek; Wien
 
Country:  Austria
Manufacturer / Brand:  Stefra (Marke), Rudolf Franek; Wien
Brand
 
Franek, Rudolf; Wien
Year: 1959 Category: Detector-Radio (Crystal or diode, without tubes/transistors)
Semiconductors (the count is only for transistors) 1: OC75
Main principle Crystal or Solid State Detector; Crystal-detection 1 circuit (no tubes)
Tuned circuits 1 AM circuit(s)
Wave bands Broadcast only (MW).
Details
Power type and voltage Dry Batteries / 3 Volt
Loudspeaker - For headphones or amp.
Power out
from Radiomuseum.org Model: Transistor Detektor TDA - Stefra Marke, Rudolf Franek;
Material Modern plastics (no Bakelite or Catalin)
Dimensions (WHD) 65 x 40 x 80 mm / 2.6 x 1.6 x 3.1 inch
Notes Speisung mit geteilter 3V-Stabbatterie. MW in 2 Bereichen: B1= 200-350m, B2= 300-600m. Transistorverstärkung: min. 50-fach. Abstimmung durch verstellbaren Eisenkern.
Net weight (2.2 lb = 1 kg) 0.1 kg / 0 lb 3.5 oz (0.22 lb)
Price in first year of sale 139.00 ATS
External source of data E. Erb 3-907007-36-0
Source of data Radiokatalog Band 2, Ernst Erb
Mentioned in RADIOBOTE, Österr. (Heft 22/2009, S.7 ff, Gerätebeschreibung)


All listed radios etc. from Stefra (Marke), Rudolf Franek; Wien
Here you find 19 models, 19 with images and 4 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.




  
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