• Country
• Czechoslovakia

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

• Year
• 1967–1969

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 75784

• • Brand: Supraphon

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

• Number of Transistors
• 9

• Semiconductors

• Main principle
• Superheterodyne (common); ZF/IF 468/10700 kHz

• Tuned circuits
• 7 AM circuit(s)     9 FM circuit(s)

• Wave bands
• Broadcast, Long Wave, Short Wave plus FM or UHF.

• Power type and voltage
• Dry Batteries / 2x4,5 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 11.7 cm = 4.6 inch

• Power out
• 0.3 W (unknown quality)

• Material
• Plastics (no bakelite or catalin)

• from Radiomuseum.org
• Model: Big Beat 2818B - Tesla; Praha, Bratislava etc.

• Shape
• Portable set > 8 inch (also usable without mains)

• Dimensions (WHD)
• 295 x 213 x 80 mm / 11.6 x 8.4 x 3.1 inch

• Net weight (2.2 lb = 1 kg)
• 2.4 kg / 5 lb 4.6 oz (5.286 lb)

• Source of data
• -- Schematic

• Author
• Model page created by Iven Müller. See "Data change" for further contributors.

• Other Models

• Here you find 1861 models, 1186 with images and 673 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Tesla; Praha, Bratislava etc.