Doris 2702B

• Country
• Czechoslovakia

• Manufacturer / Brand
• Tesla; Praha, Bratislava etc.

• Year
• 1961–1965

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 75778

• • Brand: Supraphon

• Picture
• Schematics

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Click on the schematic thumbnail to request the schematic as a free document.

• Number of Transistors
• 6

• Semiconductors
• 156NU70 155NU70 155NU70 107NU70 104NU71 104NU71 1NN41

• Main principle
• Superheterodyne (common); ZF/IF 452 kHz

• Tuned circuits
• 5 AM circuit(s)

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• Dry Batteries / 6 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 7 cm = 2.8 inch

• Power out
• 0.07 W (unknown quality)

• Material
• Plastics (no bakelite or catalin)

• from Radiomuseum.org
• Model: Doris 2702B - Tesla; Praha, Bratislava etc.

• Shape
• Very small Portable or Pocket-Set (Handheld) < 8 inch.

• Dimensions (WHD)
• 140 x 80 x 40 mm / 5.5 x 3.1 x 1.6 inch

• Notes
• Variant 2705B "T60-AB" in box with alarm-clock.

• Net weight (2.2 lb = 1 kg)
• 0.5 kg / 1 lb 1.6 oz (1.101 lb)

• Price in first year of sale
• 550.00 CSK

• Source of data
• -- Schematic

• Mentioned in
• Ceskoslovenske Rozhlasove a Televizni Prijimace I a II

• Author
• Model page created by Iven Müller. See "Data change" for further contributors.

• Other Models

• Here you find 1838 models, 1159 with images and 668 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Tesla; Praha, Bratislava etc.