• Country
• Czechoslovakia

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

• Year
• 1959 ?

• Category
• Service- or Lab Equipment

• Radiomuseum.org ID
• 164876

• • Brand: Supraphon

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

• Number of Tubes
• 5

• Valves / Tubes
• 6Ж1П 6Ж1П ECC85 EL83 EZ80 11TA31

• Number of Transistors

• Semiconductors
• 1NN41 1NN41

• Wave bands
• Wave Bands given in the notes.

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

• Loudspeaker
• - - No sound reproduction output.

• Material
• Metal case

• from Radiomuseum.org
• Model: Counter BM356 [ECC85, EL83, EZ80] - Tesla; Praha, Bratislava etc.

• Shape
• Boatanchor (heavy military or commercial set >20 kg).

• Dimensions (WHD)
• 490 x 185 x 340 mm / 19.3 x 7.3 x 13.4 inch

• Notes

• Frequency range: 3Hz - 300kHz in 9 subbands.

  Eingang I (40 kΩ) 0,1 - 5 Veff
  Eingang II (250 kΩ) 1 - 100 Veff
  Für eine Frequenz von 3 Hz ist die Empfindlichkeit etwa 5x geringer
  Gleichspannung: max. 300 V
  Genauigkeit: ≤± 3% des Zeigerausschlags in jedem Bereich

  Siehe auch Tesla Frequenzmessgerät BM356 mit abweichender Röhrenbestückung (6CC31, 6L31, 6Z31)

• Net weight (2.2 lb = 1 kg)
• 15 kg / 33 lb 0.6 oz (33.04 lb)

• Source of data
• -- Original-techn. papers.

• Mentioned in
• -- Original prospect or advert

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

• Other Models

• Here you find 1835 models, 1152 with images and 661 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Tesla; Praha, Bratislava etc.