• Country
• United States of America (USA)

• Manufacturer / Brand
• National Airphone Corp.; New York (NY)

• Year
• 1925

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 49512

• Number of Tubes
• 5

• Valves / Tubes
• UV201A UV201A UV201A UV201A UV201A

• Main principle
• TRF without regeneration; 2 AF stage(s)

• Tuned circuits
• 3 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: Somerset Mars 5A - National Airphone Corp.; New

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

• Dimensions (WHD)
• 29 x 14 x 12 inch / 737 x 356 x 305 mm

• Notes
• Three dials (primary tuning control knobs) ; mahogany cabinet.

• Price in first year of sale
• 75.00 $

• External source of data
• Ernst Erb

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

• Mentioned in
• Radio News,Feb.1925

• Other Models

• Here you find 15 models, 13 with images and 1 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from National Airphone Corp.; New York (NY)