4002A

• Country
• Czechoslovakia

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

• Year
• 1954–1957

• Category
• Television- and Radio Receiver, perh. also + Rec. etc. (TV Radio)

• Radiomuseum.org ID
• 77990

• • Brand: Supraphon

• Picture
• Schematics

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

• Number of Tubes
• 25

• Valves / Tubes
• 6F32 6F32 6F32 6F32 6B31 6F32 6F32 6F32 6F32 6B31 6BC32 6L31 6CC31 6CC31 6L31 6CC31 6L50 6Z31 1Y32 ECH21 ECH21 EM11 AZ4 AZ4 25QP20

• Main principle
• ZF/IF 452 kHz; 2 AF stage(s)

• Tuned circuits
• 6 AM circuit(s)     11 FM circuit(s)

• Wave bands
• Wave Bands given in the notes.

• Power type and voltage
• Alternating Current supply (AC) / 120/220 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 20 cm = 7.9 inch

• Power out
• 1.5 W (unknown quality)

• Material
• Wooden case

• from Radiomuseum.org
• Model: 4002A - Tesla; Praha, Bratislava etc.

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

• Dimensions (WHD)
• 660 x 395 x 525 mm / 26 x 15.6 x 20.7 inch

• Notes
• Bildrohr: 25QP20 (25cm rund, nutzb. Fläche 15x20cm). Geradeaus-Empf., fest auf 48,5-56,5MHz (~CH 1) abgeglichen. Version 4002A-b: 58-66MHz (CH 2). Ton-ZF 6,5MHz (Intercarrier, OIRT-Norm). Direkte Synchronisierung auch für Horiziontalablenkung. Zusatz-HF-Vorstufe m. 2x 6F32 optional. Radioteil m. 2x ECH21 und EM11 eingebaut, nur AM-Empfang (LMK). FS-Teil identisch zum 4001A

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

• Author
• Model page created by Bernhard Nagel. See "Data change" for further contributors.

• Other Models

• Here you find 1832 models, 1139 with images and 643 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Tesla; Praha, Bratislava etc.