• Country
• Sweden

• Manufacturer / Brand
• SR, Svenska Radioaktiebolaget (SRA, Radiola); Stockholm

• Year
• 1951

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 72747

• • Brand: Radiola

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

• Number of Tubes
• 5

• Valves / Tubes
• DK40 DAF40 DAF40 DAF41 DL41

• Main principle
• ZF/IF 480 kHz

• Tuned circuits
• 6 AM circuit(s)

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

• Power type and voltage
• Dry Batteries / 1,5 & 90 Volt

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

• Material
• Wooden case

• from Radiomuseum.org
• Model: Radiola 521 - SR, Svenska Radioaktiebolaget

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

• Dimensions (WHD)
• 360 x 236 x 135 mm / 14.2 x 9.3 x 5.3 inch

• Net weight (2.2 lb = 1 kg)
• 6 kg / 13 lb 3.5 oz (13.216 lb)

• Literature/Schematics (1)
• -- Original-techn. papers.

• Other Models

• Here you find 276 models, 171 with images and 163 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from SR, Svenska Radioaktiebolaget (SRA, Radiola); Stockholm