• Country
• Finland

• Manufacturer / Brand
• Superfon; Helsinki

• Year
• 1948 ??

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 150399

• • alternative name: Oy Radio-Aitta Ab,

• Number of Tubes
• 4

• Valves / Tubes
• DK21 DF21 DAC21 DL21

• Main principle
• Superheterodyne (common)

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

• Power type and voltage
• Storage and/or dry batteries / 90 & 1.5 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 12 cm = 4.7 inch

• Material
• Leather / canvas / plastic - over other material

• from Radiomuseum.org
• Model: Portable [Octal tubes] - Superfon; Helsinki

• Shape
• Portable set > 8 inch (also usable without mains)

• Dimensions (WHD)
• 328 x 265 x 140 mm / 12.9 x 10.4 x 5.5 inch

• Notes
• Portable Superfon

• Net weight (2.2 lb = 1 kg)
• 3.6 kg / 7 lb 14.9 oz (7.93 lb)

• Author
• Model page created by Jari Aalto. See "Data change" for further contributors.

• Other Models

• Here you find 9 models, 7 with images and 0 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Superfon; Helsinki