• Country
• Czechoslovakia

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

• Year
• 1966–1970

• Category
• Sound/Video Recorder and/or Player

• Radiomuseum.org ID
• 336862

• • Brand: Supraphon

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

• Number of Transistors
• 12

• Semiconductors
• 106NU70 106NU70 106NU70 106NU70 104NU71 OC72 2NU72 2NU72 105NU70 104NU71 105NU70 104NU71

• 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
• 2.5 W (unknown quality)

• Material
• Plastics (no bakelite or catalin)

• from Radiomuseum.org
• Model: B42 ANP223A - Tesla; Praha, Bratislava etc.

• Shape
• Tablemodel, low profile (big size).

• Dimensions (WHD)
• 315 x 120 x 300 mm / 12.4 x 4.7 x 11.8 inch

• Notes

• Track system: 4-track monaural system

  Heads: 1 x combined record and playback, 1 x erase

  Reel size: up to 15 cm

  Tape speeds: 9,53 cm/s

  Frequency response: 50 – 14 000 Hz

  Signal to Noise Ratio: 40 dB

  mechanics taken from model B4

  Similar model like ANP223, but two bulbes lighting of level indicator.

• Net weight (2.2 lb = 1 kg)
• 6.7 kg / 14 lb 12.1 oz (14.758 lb)

• Price in first year of sale
• 2,800.00 Kčs

• Mentioned in
• - - Manufacturers Literature (Service manual Tesla)

• Author
• Model page created by Vladimir Jirkal. See "Data change" for further contributors.

• Other Models

• Here you find 1877 models, 1203 with images and 689 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Tesla; Praha, Bratislava etc.