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5 A early

5 A ; United American (ID = 474767) Radio
 
5 A ; United American (ID = 474768) Radio
5 A ; United American (ID = 2129927) Radio 5 A ; United American (ID = 2129928) Radio
5 A ; United American (ID = 692616) Radio 5 A ; United American (ID = 716423) Radio
5 A ; United American (ID = 901712) Radio 5 A ; United American (ID = 901713) Radio
5 A ; United American (ID = 901714) Radio 5 A ; United American (ID = 1722170) Radio
5 A ; United American (ID = 1722171) Radio 5 A ; United American (ID = 1956286) Radio
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5 A ; United American (ID = 2129927) Radio
United American: 5 A [Radio] ID = 2129927 1400x787
Select picture or schematic to display from thumbnails on the right and click for download.
For model 5 A early, United American Bosch (Magneto Corporation); Springfield (MA):
United American Bosch, from my own collection
 
Country:  United States of America (USA)
Manufacturer / Brand:  United American Bosch (Magneto Corporation); Springfield (MA)
alternative name
 
American Bosch Magneto
Brand
Essex
Year: 1931 Category: Broadcast Receiver - or past WW2 Tuner
Valves / Tubes 5: 551 551 224 247 280
Main principle TRF without regeneration; Screengrid 1926-1935
Tuned circuits 3 AM circuit(s)
Wave bands Broadcast only (MW).
Details
Power type and voltage Alternating Current supply (AC) / 110 Volt
Loudspeaker Permanent or electro-dynamic (moving coil), system not known yet.
Power out
from Radiomuseum.org Model: 5 A [early] - United American Bosch Magneto
Material Wooden case
Shape Tablemodel, Mantel/Midget/Compact up to 14" width, but not a Portable (See power data. Sometimes with handle but for mains only).
Dimensions (WHD) 9 x 14 x 6.5 inch / 229 x 356 x 165 mm
Notes

there is also a console model 5C. Under license from American Bosch was built a very similar radio in Italy, the Coribante from Radiomarelli. See the interesting restoring article in English.

Collectors' prices  
Source of data Collector's Guide to Antique Radios (6th edition)
Circuit diagram reference Rider's Perpetual, Volume 1 = 1931/1934 (for 1919-1931)
Mentioned in Machine Age to Jet Age II
Literature/Schematics (1) Radio Collector`s Guide 1921-1932

Model page created by Konrad Birkner † 12.08.2014. See "Data change" for further contributors.



All listed radios etc. from United American Bosch (Magneto Corporation); Springfield (MA)
Here you find 411 models, 153 with images and 267 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.




  
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