• Country
• Czechoslovakia

• Manufacturer / Brand
• REL, Electrum; Brno

• Year
• 1946 ??

• Category
• Audio Amplifier or -mixer

• Radiomuseum.org ID
• 137663

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

• Number of Tubes
• 5

• Valves / Tubes
• EF12 EF12 EL12 EL12 AZ12

• Main principle
• Audio-Amplification

• Wave bands
• - without

• Power type and voltage
• Alternating Current supply (AC) / 120; 220; 240 Volt

• Loudspeaker
• - This model requires external speaker(s).

• Material
• Metal case

• from Radiomuseum.org
• Model: 20AB - REL, Electrum; Brno

• Shape
• Chassis only or for «building in»

• Notes
• 3 umschaltbare Eingänge: Plattenspieler, Mikrofon, Rundfunk; Ausgänge für 6 Ohm, 10 Ohm und 500 Ohm.

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

• Author
• Model page created by Wolfgang Lill. See "Data change" for further contributors.

• Other Models

• Here you find 49 models, 28 with images and 35 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from REL, Electrum; Brno