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

680

680 ; United American (ID = 778959) Radio
 
680 ; United American (ID = 778960) Radio
 
680 ; United American (ID = 778961) Radio
 
680 ; United American (ID = 1933110) Radio
680 ; United American (ID = 1118351) Radio 680 ; United American (ID = 1118352) Radio
680 ; United American (ID = 704106) Radio 680 ; United American (ID = 1118353) Radio
680 ; United American (ID = 1118354) Radio
Use red slider bar for more.
680 ; United American (ID = 1118351) Radio
United American: 680 [Radio] ID = 1118351 630x800
Select picture or schematic to display from thumbnails on the right and click for download.
For model 680, United American Bosch (Magneto Corporation); Springfield (MA):
kb3wbb radio collection
 
Country:  United States of America (USA)
Manufacturer / Brand:  United American Bosch (Magneto Corporation); Springfield (MA)
alternative name
 
American Bosch Magneto
Brand
Essex
Year: 1936 Category: Broadcast Receiver - or past WW2 Tuner
Valves / Tubes 13: 6K7 6C5 6A8 6K7 6K7 6K7 6H6 6F5 6H6 6L6 or 6L6G 6L6 or 6L6G 5Z3 5Y3 or 5Z3
Main principle Superhet with RF-stage; ZF/IF 465 kHz
Tuned circuits 8 AM circuit(s)
Wave bands Broadcast, Long Wave and 2 x Short Wave.
Details
Power type and voltage Alternating Current supply (AC) / 105-125 Volt
Loudspeaker Electro Magnetic Dynamic LS (moving-coil with field excitation coil)
Power out 20 W (unknown quality)
from Radiomuseum.org Model: 680 - United American Bosch Magneto
Material Wooden case
Shape Console with any shape - in general
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 7-43 ; 9-7, 8
Literature/Schematics (2) Pre-War Consoles


All listed radios etc. from United American Bosch (Magneto Corporation); Springfield (MA)
Here you find 413 models, 159 with images and 268 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.



  
rmXorg