• Country
• Czechoslovakia

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

• Year
• 1957 ??

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 168900

• • Brand: Supraphon

• Number of Tubes
• 32

• Valves / Tubes
• ECH21 ECH21 EBL21 AZ11 EM11 EF22 EF22 EF22 EBL21 AZ11 6F31 EF22 EF22 EBL21 4654 4654 AZ4 AZ4 EF22 EF22 EBL21 4654 4654 AZ4 AZ4 EF22 EF22 EBL21 4654 4654 AZ4 AZ4

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

• Wave bands
• Broadcast, Long Wave and 2 x Short Wave.

• Details
• Record Player (not changer)

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

• Loudspeaker
• - This model requires external speaker(s).

• Power out
• 150 W (unknown quality)

• Material
• Wooden case

• from Radiomuseum.org
• Model: Rozhlasova ustredna DU-303 - Tesla; Praha, Bratislava etc.

• Shape
• Console, Lowboy (legs < 50 %).

• Dimensions (WHD)
• 570 x 1260 x 500 mm / 22.4 x 49.6 x 19.7 inch

• Notes
• Central office radio equipment for schools and public areas.

• Net weight (2.2 lb = 1 kg)
• 90 kg / 198 lb 3.8 oz (198.238 lb)

• Author
• Model page created by Gabriel Toth. See "Data change" for further contributors.

• Other Models

• Here you find 1874 models, 1199 with images and 681 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Tesla; Praha, Bratislava etc.