• Country
• Czechoslovakia

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

• Year
• 1958/1959

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 72585

• • Brand: Supraphon

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

• Number of Tubes
• 5

• Valves / Tubes
• 6H31 6F31 6BC32 6L31 6Z31

• Main principle
• Superheterodyne (common); ZF/IF 468 kHz

• Tuned circuits
• 6 AM circuit(s)

• Wave bands
• Broadcast plus 2 Short Wave bands.

• Power type and voltage
• Alternating Current supply (AC) / 110-220 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) - elliptical / Ø 16 cm = 6.3 inch

• Power out
• 3 W (unknown quality)

• Material
• Bakelite case

• from Radiomuseum.org
• Model: 420A-5 - Tesla; Praha, Bratislava etc.

• Shape
• Tablemodel, with any shape - general.

• Notes
• Variant 420A-7: Tuning scale without names of stations.

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

• Author
• Model page created by Gabriel Toth. 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.