• Country
• United States of America (USA)

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

• Year
• 1927/1928

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 32491

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

Click on the schematic thumbnail to request the schematic as a free document.

• Number of Tubes
• 6

• Valves / Tubes
• UX226 UX226 UX226 UY227 UX226 UX171A

• Main principle
• TRF without regeneration

• Tuned circuits
• 3 AM circuit(s)

• Wave bands
• Broadcast only (MW).

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

• Material
• Wooden case

• from Radiomuseum.org
• Model: 46 The Little Six AC - United American Bosch Magneto

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

• Notes

• See also "The Little Six" battery version with really six tubes - and a simpler cabinet. For "The Lillte Six", model 46, the first advertising date is September 1927, together with model 87, whereas models 57, 66 and 76 were first advertised in June 1927. The first digit is a serial number and the last digit the number of tubes.

• External source of data
• Ernst Erb

• Source of data
• The Radio Collector's Directory and Price Guide 1921 - 1965

• Circuit diagram reference
• Rider's Perpetual, Volume 1 = 1931/1934 (for 1919-1931)

• Mentioned in
• Radio Manufacturers of the 1920s, Vol 1 (according page 112, the ad is from November 1927 - as new!)

• Literature/Schematics (1)
• Riders 1-8

• Other Models

• Here you find 414 models, 165 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)