• Country
• United States of America (USA)

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

• Year
• 1935

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 64113

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

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

• Number of Tubes
• 7

• Valves / Tubes
• 6K7 6A8 6K7 6H6 6F5 6F6 80

• Main principle
• Superhet with RF-stage; ZF/IF 465 kHz

• Tuned circuits
• 7 AM circuit(s)

• Wave bands
• Broadcast, Short Wave(s) and Police.

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

• Loudspeaker
• Electro Magnetic Dynamic LS (moving-coil with field excitation coil) / Ø 8 inch = 20.3 cm

• Power out
• 2.3 W (unknown quality)

• Material
• Wooden case

• from Radiomuseum.org
• Model: 575F - United American Bosch Magneto

• Shape
• Tablemodel, Tombstone = decorative upright, not cathedral but can have rounded edges.

• Dimensions (WHD)
• 16.5 x 21 x 10 inch / 419 x 533 x 254 mm

• Notes

• The American Bosch 575F is a 7-tube, 3-band radio that receives the AM Broadcast band (540-1800 kHz), Shortwave band (green 1800-6000 kHz) and Shortwave band (red 6000-18000 kHz). The lamp on the right is a general power indicator. The lamp on the left changes color to indicate the band by means of a moving 3-color lens connected to the band switch.

• 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 7 = 1936 and before

• Mentioned in
• Collector's Guide to Antique Radios 4. Edition

• Literature/Schematics (1)
• Riders 7-15, 17, 18

• Literature/Schematics (2)
• Machine Age to Jet Age II

• Literature/Schematics (3)
• Cathedral & Tombstone Radios (page 51.)

• 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)