• Country
• United States of America (USA)

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

• Year
• 1932

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 18292

• • 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
• 51 27 51 57 47 80

• Main principle
• Superheterodyne (common); ZF/IF 175 kHz

• Wave bands
• Broadcast only (MW).

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

• Loudspeaker
• Electro Magnetic Dynamic LS (moving-coil with field excitation coil)

• Material
• Wooden case

• from Radiomuseum.org
• Model: 236A Personal Radio Vibro Power - United American Bosch Magneto

• Shape
• Tablemodel, low profile (big size).

• Dimensions (WHD)
• 380 x 225 x 200 mm / 15 x 8.9 x 7.9 inch

• Notes

• The model American Bosch 236-A was "sold-out" for instance in Switzerland in a sales brochure called "1933 Das Beste in Radio" by a Hs. Reinhard in Kriens (near Luzern) with pictures, Swiss price, and data for 10 models: 

  Apex 9-A (price SFr. 525.--), Apex 25-A (SFr. 295.--) and 25-LT with a Radio-Grammophon combination (table radio, SFr. 595.--), Apex 99-A (SFr. 375), Apex 99-B (lowboy, SFr. 425.--), Apex 31-CP Radio-Grammophon-Combination (low boy, SFr. 990.--), Apex 9-ESK also a combination with modern style low boy (SFr. 1080.--); American Bosch 236-A (SFr. 425.--), and 20-BSK combination (modern low boy, SFr. 1260.--);  Lyric S-80 (SFr. 525.--). The front page of the brochure shows a chassis with stamped information: American Bosch, VIBRO-POWER. The power transformer for these models is for continental 220 volts and 50 Hz.

• Net weight (2.2 lb = 1 kg)
• 10 kg / 22 lb 0.4 oz (22.026 lb)

• Price in first year of sale
• 45.95 $

• External source of data
• E. Erb 3-907007-36-0

• Source of data
• Collector's Guide to Antique Radios (6th edition)

• Circuit diagram reference
• Die «Thali Schemasammlung» führt das Modell.

• Mentioned in
• Machine Age to Jet Age II (page 62)

• Literature/Schematics (1)
• Rider's Perpetual, Volume 3 = 1933 and before

• Literature/Schematics (2)
• Radio Collector`s Guide 1921-1932

• Literature/Schematics (3)
• -- Original prospect or advert (Radio-Retailing, September 1932)

• 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)