• Country
• Finland

• Manufacturer / Brand
• Oy Helvar; Helsinki

• Year
• 1957

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 209202

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

• Number of Tubes
• 6

• Valves / Tubes
• ECC85 ECH81 EF89 EABC80 EM80 EL84

• Main principle
• Superheterodyne (common); ZF/IF 484/10700 kHz

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

• Power type and voltage
• Alternating Current supply (AC)

• Loudspeaker
• 3 Loudspeakers

• Material
• Wooden case

• from Radiomuseum.org
• Model: Sonetta - Oy Helvar; Helsinki

• Shape
• Tablemodel with Push Buttons.

• Notes
• Selenium rectifier.
  Dial lamps: 2x 6,3V / 0,3A

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

• Other Models

• Here you find 254 models, 215 with images and 93 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Oy Helvar; Helsinki