• Country
• Finland

• Manufacturer / Brand
• Opera, Oy Otto Brandt Ab; Helsinki

• Year
• 1946

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 198196

• Number of Tubes
• 6

• Valves / Tubes
• 7SJ8G 6K7G 6Q7G 25L6G EM11 CY2

• Main principle
• Superheterodyne (common); ZF/IF 455 kHz

• Tuned circuits
• 6 AM circuit(s)

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

• Power type and voltage
• AC/DC-set / 110; 125; 220; 240 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil)

• Material
• Wooden case

• from Radiomuseum.org
• Model: Opera 666YR - Opera, Oy Otto Brandt Ab;

• Shape
• Tablemodel, with any shape - general.

• Dimensions (WHD)
• 552 x 400 x 255 mm / 21.7 x 15.7 x 10 inch

• Notes
• Dial lamps: 2x 6,3V / 0,3A

• Source of data
• - - Data from my own collection

• Author
• Model page created by Timo Rantasaari. See "Data change" for further contributors.

• Other Models

• Here you find 4 models, 3 with images and 0 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Opera, Oy Otto Brandt Ab; Helsinki