• Country
• Norway

• Manufacturer / Brand
• Ostfold Radio A/S; Frederikstad

• Year
• 1963

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 221489

• Number of Transistors
• 9

• Semiconductors

• Main principle
• Superheterodyne (common)

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

• Details
• Record Player (not changer)

• Power type and voltage
• Dry Batteries / 6x 1,5 Volt

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

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

• from Radiomuseum.org
• Model: Mascot Duo FM 640 - Ostfold Radio A/S;

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

• Dimensions (WHD)
• 310 x 240 x 130 mm / 12.2 x 9.4 x 5.1 inch

• Notes
• Model 636: FM 86-101 MHz Model 640: FM 86-108 MHz

• Price in first year of sale
• 640.00 NOK

• Source of data
• -- Collector info (Sammler)

• Author
• Model page created by Ernst Rykkje. See "Data change" for further contributors.

• Other Models

• Here you find 38 models, 26 with images and 7 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Ostfold Radio A/S; Frederikstad