• Country
• Italy

• Manufacturer / Brand
• RSM Costruzioni Radio, Radio Scientifica; Milano

• Year
• 1949/1950

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 144351

• Number of Tubes
• 6

• Valves / Tubes

• Main principle
• Superheterodyne (common)

• Wave bands
• Wave Bands given in the notes.

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

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

• Material
• Wooden case

• from Radiomuseum.org
• Model: 550L/4 - RSM Costruzioni Radio, Radio

• Shape
• Tablemodel, low profile (big size).

• Notes
• 4 gamme d'onda.
  4 wave bands.

• Source of data
• Guida Pratica Antique Radio II (2000)

• Author
• Model page created by Alessandro De Poi. See "Data change" for further contributors.

• Other Models

• Here you find 15 models, 11 with images and 1 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from RSM Costruzioni Radio, Radio Scientifica; Milano