• Country
• Czechoslovakia

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

• Year
• 1957 ??

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 168899

• • Brand: Supraphon

• Number of Tubes
• 25

• 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

• Main principle
• Superheterodyne (common)

• 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
• 100 W (unknown quality)

• Material
• Wooden case

• from Radiomuseum.org
• Model: Rozhlasova ustredna DU-302 - 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. Eingänge für 2x Mikrofon, 1 x Universal, Antenne, Erde, Ausgang 1 x 1,5 Watt 5 Ohm für Anschluß Monitor, 4 x 50 Watt 100 Volt.
  Die Eingänge sind einzeln regelbar : Radio, Plattenspieler. Tonreglung in 4 Stufen: Bass, Musik, Sprache, Höhen.
  Die zwei 5-poligen Buchsen sind offensichtlich nachträglich eingebaut.

• Net weight (2.2 lb = 1 kg)
• 80 kg / 176 lb 3.4 oz (176.211 lb)

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

• Other Models

• Here you find 1874 models, 1197 with images and 680 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Tesla; Praha, Bratislava etc.