Antique radios, Old Time Radios

Transistor Detektor TDA

ID = 10741

Stefra Marke, Rudolf: Transistor Detektor TDA [Crystal] ID = 142516 375x556

For model Transistor Detektor TDA, Stefra (Marke), Rudolf Franek; Wien:
Stefra Transistor Detektor TDA mit original Karton

Country:

Manufacturer/Brand:

Brand

Franek, Rudolf; Wien

Year: 1959

Type: Crystal set (or Diode-Radio)

Semiconductors (the count is only for transistors)

1: OC75

Principle	Crystal Detection; 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 ATS
Collectors' prices	1 Collector price (for members Radiomuseum.org)
External source of data	E. Erb 3-907007-36-0
Source of data	Radiokatalog Band 2, Ernst Erb