• Country
• United States of America (USA)

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

• Year
• 1930

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 32515

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

• Number of Tubes
• 8

• Valves / Tubes
• 224 224 224 224 227 UX245 UX245 UX280

• Main principle
• TRF without regeneration; Screengrid 1926-1935

• Tuned circuits
• 5 AM circuit(s)

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• Alternating Current supply (AC) / 100-130 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil)

• Material
• Wooden case

• from Radiomuseum.org
• Model: 58 B - United American Bosch Magneto

• Shape
• Console, Lowboy (legs < 50 %).

• Dimensions (WHD)
• 32.5 x 56 x 16.5 inch / 826 x 1422 x 419 mm

• Notes
• At time of making this set 58 (chassis) in Springfeild, Mass., the company was called "American Bosch Magneto Corportation".
  
  Leg hight of the 58B is 25 1/2 in, cabinet 30 1/2 in. The back of cabinets shelf heights: bottom 12 in, top 13 in. The 58B is operated with one dial (primary tuning control knob). 5 tuned circuits: 3 RF stages and the first bandfilter, then transformer coupling then bandfilter and at last 1 single tuned circuit, detection, AF and push-pull. See also 58A. The maximum consumption (power unit) is 125 watts.

• Price in first year of sale
• 159.00 $

• External source of data
• Ernst Erb

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

• Mentioned in
• The Radio Collector's Directory and Price Guide 1921 - 1965

• Other Models

• Here you find 414 models, 163 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)