T-2800-B T58

• Country
• Czechoslovakia

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

• Year
• 1958–1960

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 75870

• • Brand: Supraphon

• Picture
• Schematics

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

• Number of Transistors
• 9

• Semiconductors

• Main principle
• Superheterodyne (common); ZF/IF 250 kHz

• Tuned circuits
• 6 AM circuit(s)

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• Dry Batteries / 4 × 1,5 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 9.5 cm = 3.7 inch

• Power out
• 0.1 W (unknown quality)

• Material
• Leather / canvas / plastic - over other material

• from Radiomuseum.org
• Model: T-2800-B T58 - Tesla; Praha, Bratislava etc.

• Shape
• Portable set > 8 inch (also usable without mains)

• Dimensions (WHD)
• 220 x 150 x 85 mm / 8.7 x 5.9 x 3.3 inch

• Notes
• Moulded paper case, covered with artificial leather. Different colours. First Czechoslovak transistor radio. Transistors: 2 x 154NU70, 3 x 153NU70, 104NU70, 3 x 103NU70. From number 427.000 the schematic is slightly changed to 152NU70, 154NU70 instead of 2 x 154NU70.

• Net weight (2.2 lb = 1 kg)
• 1.2 kg / 2 lb 10.3 oz (2.643 lb)

• Price in first year of sale
• 1,303.00 Kc

• Source of data
• Ceskoslovenske Rozhlasove a Televizni Prijimace I a II

• Mentioned in
• Photo n.13 in Antique Radio Magazine n.57, October 2003, pages 53-61. Written in Italian and English

• Author
• Model page created by Eduard Pavlik. 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.