• Country
• Austria

• Manufacturer / Brand
• Stefra (Marke), Rudolf Franek; Wien

• Year
• 1941 ?

• Category
• Detector-Radio (Crystal or diode, without tubes/transistors)

• Radiomuseum.org ID
• 75239

• • Brand: Franek, Rudolf; Wien

• Main principle
• Crystal or Solid State Detector

• Tuned circuits
• 1 AM circuit(s)

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• No Power needed

• Loudspeaker
• - For headphones or amp.

• Material
• Plastics (no bakelite or catalin)

• from Radiomuseum.org
• Model: Detektor-Apparat Modell 42 - Stefra Marke, Rudolf Franek;

• Shape
• Tablemodel, with any shape - general.

• Dimensions (WHD)
• 65 x 36 x 80 mm / 2.6 x 1.4 x 3.1 inch

• Notes
• Rückseite mit schwarzem Kunststoffdeckel verschlossen (nur geklemmt), Hf-Kammerspule mit 2 Anzapfungen, Hartpapier-Drehko, Drehknopf mit Zahlen 1-100.

• Price in first year of sale
• 3.80 RM

• Source of data
• - - Manufacturers Literature / Radiokatalog Band 2, Ernst Erb

• Mentioned in
• Radioamateur 02/1942

• Literature/Schematics (1)
• Der Radio-Händler / Der Rundfunk-Händler (ab Jan. 1939) (Jan. 1941)

• Author
• Model page created by Wolfgang Eckardt. See "Data change" for further contributors.

• Other Models

• Here you find 20 models, 19 with images and 4 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Stefra (Marke), Rudolf Franek; Wien