• Country
• United States of America (USA)

• Manufacturer / Brand
• Northwestern Radio Mfg. Co.; Portland, OR

• Year
• 1922/1923

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 49759

• Number of Tubes
• 5

• Valves / Tubes
• UV201 UV201 UV200 UV201 UV201

• Main principle
• 2 AF stage(s)

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• Storage and/or dry batteries

• Loudspeaker
• - This model requires external speaker(s).

• Material
• Wooden case

• from Radiomuseum.org
• Model: Type SR-25 [old 1 upper dial] - Northwestern Radio Mfg. Co.;

• Shape
• Tablemodel, Box - most often with Lid (NOT slant panel).

• Price in first year of sale
• 150.00 $

• External source of data
• Ernst Erb

• Source of data
• Radio Collector`s Guide 1921-1932

• Literature/Schematics (4)
• October 1922 Radio Waves magazine advertisement inside rear cover

• Other Models

• Here you find 17 models, 11 with images and 1 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Northwestern Radio Mfg. Co.; Portland, OR