• Country
• United States of America (USA)

• Manufacturer / Brand
• United American Bosch (Magneto Corporation); Springfield (MA)

• Year
• 1929

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 253186

• • alternative name: American Bosch Magneto
  • Brand: Essex

• Number of Tubes
• 7

• Valves / Tubes
• 224 224 224 227 245 245 280

• Main principle
• TRF (Tuned-Radio-Frequency but use of regeneration unknown); Screengrid 1926-1935

• Tuned circuits
• 4 AM circuit(s)

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• Alternating Current supply (AC) / 115 Volt

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

• Material
• Wooden case

• from Radiomuseum.org
• Model: 48 Library Model - United American Bosch Magneto

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

• Notes

• Sliding doors.

• Price in first year of sale
• 119.50 $

• Mentioned in
• Radio Collector`s Guide 1921-1932

• Literature/Schematics (1)
• The Radio Collector's Directory and Price Guide 1921 - 1965

• Literature/Schematics (2)
• Rider's Perpetual, Volume 1 = 1931/1934 (1919 to 1931)

• Other Models

• Here you find 415 models, 166 with images and 272 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from United American Bosch (Magneto Corporation); Springfield (MA)