• Country
• United States of America (USA)

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

• Year
• 1936

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 18323

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

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

• Number of Tubes
• 9

• Valves / Tubes
• 6K7 6C5 6A8 6K7 6H6 6F5 6F6 or 6F6G 6F6 or 6F6G 5Y3 or 5Z4

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

• Tuned circuits
• 7 AM circuit(s)

• Wave bands
• Broadcast, Long Wave and 2 x Short Wave.

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

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

• Power out
• 4.5 W (unknown quality)

• Material
• Wooden case

• from Radiomuseum.org
• Model: 670S - United American Bosch Magneto

• Shape
• Console with any shape - in general

• Notes
•  

• Price in first year of sale
• 120.00 $

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

• Source of data
• -- Original prospect or advert

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

• Mentioned in
• Pre-War Consoles

• Literature/Schematics (1)
• Rider's Perpetual, Volume 7 = 1936 and before (Riders 7-39, 41, 42 ; 9-6)

• Literature/Schematics (2)
• Collector's Guide to Antique Radios (7th Edition)

• 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)