radiomuseum.org
Please click your language flag. Bitte Sprachflagge klicken.

20

20 ; United American (ID = 772087) Radio
 
20 ; United American (ID = 772088) Radio
20 ; United American (ID = 1711144) Radio 20 ; United American (ID = 1711148) Radio
20 ; United American (ID = 1711149) Radio 20 ; United American (ID = 1711151) Radio
Use red slider bar for more.
20 ; United American (ID = 1711144) Radio
United American: 20 [Radio] ID = 1711144 800x1072
Select picture or schematic to display from thumbnails on the right and click for download.
For model 20, United American Bosch (Magneto Corporation); Springfield (MA)
 
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 8: 35 35 27 35 27 47 47 80
Main principle Superheterodyne (common)
Wave bands Broadcast only (MW).
Details
Power type and voltage Alternating Current supply (AC)
Loudspeaker Permanent or electro-dynamic (moving coil), system not known yet.
Power out
from Radiomuseum.org Model: 20 - United American Bosch Magneto
Material Wooden case
Shape Console with any shape - in general
Notes AF output tubes are in parallel
Price in first year of sale 89.00 $
External source of data Ernst Erb
Source of data Radio Collector`s Guide 1921-1932
Circuit diagram reference Rider's Perpetual, Volume 2 = 1932 (Models 1931/1932)
Mentioned in The Radio Collector's Directory and Price Guide 1921 - 1965
Literature/Schematics (1) Riders 2-1, 2


All listed radios etc. from United American Bosch (Magneto Corporation); Springfield (MA)
Here you find 412 models, 158 with images and 269 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.




  
rmXorg