• Country
• United States of America (USA)

• Manufacturer / Brand
• Marshall Radio Products Inc.; Chicago, Illinois

• Year
• 1924

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 218234

• Number of Tubes
• 3

• Valves / Tubes
• UV201A UV201A UV201A

• Main principle
• TRF with regeneration; 2 AF stage(s)

• Tuned circuits
• 1 AM circuit(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: Marshall 3 B-1 - Marshall Radio Products Inc.;

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

• Dimensions (WHD)
• 16.5 x 9.5 x 7.5 inch / 419 x 241 x 191 mm

• Notes
• This set was manufactured for the Marshall Radio Products Co. by the Tri-City Electric Supply Company using their regenerative patent. This set was almost identical to the Montgomery Ward Model W-5 Airline De Luxe also made by Tri-City..

• Author
• Model page created by Alan Larsen. See "Data change" for further contributors.

• Other Models

• Here you find 3 models, 3 with images and 0 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Marshall Radio Products Inc.; Chicago, Illinois