• Country
• Czechoslovakia

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

• Year
• 1945–1947

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 70594

• • Brand: Supraphon

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

• Number of Tubes
• 5

• Valves / Tubes
• ECH4 ECH4 EBL1 AZ1 EM4

• Main principle
• Superheterodyne (common); ZF/IF 128 kHz

• Tuned circuits
• 7 AM circuit(s)

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

• Power type and voltage
• Alternating Current supply (AC) / 110-245 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 21.6 cm = 8.5 inch

• Power out
• 3.2 W (unknown quality)

• Material
• Wooden case

• from Radiomuseum.org
• Model: Beseda 845A -45 - Tesla; Praha, Bratislava etc.

• Shape
• Tablemodel, with any shape - general.

• Dimensions (WHD)
• 545 x 360 x 245 mm / 21.5 x 14.2 x 9.6 inch

• Notes
• Variant 845X-45 includes vibration transducer for DC supply. Reclining tuning dial, lit by two lamps.
  Scala parlante inclinabile, illuminata da due lampade poste dentro i supporti della scala stessa che illuminano il cristallo sui due lati verticali per trasparenza.

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

• Literature/Schematics (1)
• -- Original-techn. papers.

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

• Other Models

• Here you find 1872 models, 1196 with images and 678 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Tesla; Praha, Bratislava etc.