• Year
  • 1966–1970
  • Category
  • Sound/Video Recorder and/or Player
  • Radiomuseum.org ID
  • 114717
    • Brand: Supraphon

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

 Technical Specifications

  • Number of Transistors
  • 14
  • Main principle
  • Audio-Amplification
  • Wave bands
  • - without
  • Details
  • Tape Recorder
  • Power type and voltage
  • Alternating Current supply (AC) / 120; 220 Volt
  • Loudspeaker
  • Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) - elliptical
  • Power out
  • 4.5 W (unknown quality)
  • Material
  • Plastics (no bakelite or catalin)
  • from Radiomuseum.org
  • Model: B4 ANP221 - Tesla; Praha, Bratislava etc.
  • Shape
  • Tablemodel, with any shape - general.
  • Dimensions (WHD)
  • 315 x 120 x 300 mm / 12.4 x 4.7 x 11.8 inch
  • Notes
  • Vierspur-Mono; Bandgeschwindigkeiten: 2,38/4,76/9,56 cm/s; Übertragungsbereich: 50···15000 Hz. Eingang für Radio, Mikrofon, Plattenspieler. Ausgang: Radio, Kopfhörer 1 V/500 Ohm.

    Difference between B4 ANP220 and B4 ANP221.

    ANP 221 is typical design B4. The carriers have a simple construction with one friction segment, the middle potentiometers are used only for recording (left for the microphone, right for the radio or gramophone inputs). The accessories of the device include a transport textile case with a zipper.

  • Net weight (2.2 lb = 1 kg)
  • 6.8 kg / 14 lb 15.6 oz (14.978 lb)
  • Price in first year of sale
  • 820.00 Mark
  Tesla B4 ANP221 Bedienanleitung 2217 KB
  • Documents regarding this model
  • Author
  • Model page created by Wolfgang Lill. See "Data change" for further contributors.

 Collections | Museums | Literature

 Forum

Forum contributions about this model: Tesla; Praha,: B4 ANP221

Threads: 1 | Posts: 1

Über den internen Lautsprecher wird nur ein sehr leises, verzerrtes Signal wiedergegeben. Die Wiedergabe über externen Verstärker/Radio funktioniert gut.

Der Koppelkondensator C301 ( 5µF) in der Eingangsstufe des Endverstärkers hat Feinschluß !

Uwe Ronneberger, 01.Aug.15

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