• Country
• Czechoslovakia

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

• Year
• 1950 ??

• Category
• Audio Amplifier or -mixer

• Radiomuseum.org ID
• 136494

• • Brand: Supraphon

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

• Number of Tubes
• 4

• Valves / Tubes
• CF50 CF50 EF6 AZ1

• Main principle
• Audio-Amplification

• Wave bands
• - without

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

• Loudspeaker
• - For headphones or amp.

• Material
• Metal case

• from Radiomuseum.org
• Model: Ridici zesilovac EK 259 240 - Tesla; Praha, Bratislava etc.

• Shape
• Chassis only or for «building in»

• Notes
• Mikrofonvorverstärker

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

• Author
• Model page created by Wolfgang Lill. 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.