• Country
• Norway

• Manufacturer / Brand
• Siera, Teknitron A/S; Oslo

• Year
• 1954/1955

• Category
• Sound/Video Recorder and/or Player

• Radiomuseum.org ID
• 239625

• Number of Tubes
• 2

• Valves / Tubes
• EBC41 EL41

• Number of Transistors

• Semiconductors
• OA50 E250C50

• Main principle
• Audio-Amplification

• Wave bands
• - without

• Details
• Rec.Player+Audio.Amp+LS

• Power type and voltage
• Alternating Current supply (AC) / 110-127; 220 Volt

• Loudspeaker
• Permanent or electro-dynamic (moving coil), system not known yet.

• Power out
• 2.1 W (unknown quality)

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

• from Radiomuseum.org
• Model: Siera Phonokoffert SN502A - Siera, Teknitron A/S; Oslo

• Shape
• Tablemodel, with any shape - general.

• Notes

• Record player with amplifier and speaker. 3 speeds.

• Price in first year of sale
• 412.50 NOK

• Mentioned in
• Radiohandleren, Nr. 7, Sept. 1954; Nr. 8, Oct. 1954

• Other Models

• Here you find 17 models, 11 with images and 2 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Siera, Teknitron A/S; Oslo