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Grunow 731 Ch= 7-M

Grunow 731 Ch= 7-M; General Household (ID = 684061) Radio
 
Grunow 731 Ch= 7-M; General Household (ID = 684063) Radio
 
Grunow 731 Ch= 7-M; General Household (ID = 684064) Radio
Grunow 731 Ch= 7-M; General Household (ID = 1759181) Radio Grunow 731 Ch= 7-M; General Household (ID = 1759179) Radio
Grunow 731 Ch= 7-M; General Household (ID = 1759182) Radio Grunow 731 Ch= 7-M; General Household (ID = 707506) Radio
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Grunow 731 Ch= 7-M; General Household (ID = 1759181) Radio
General Household: Grunow 731 Ch= 7-M [Radio] ID = 1759181 1400x1866
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For model Grunow 731 Ch= 7-M, General Household Utilities Co. (Grunow); Chicago Ill.:
Front view, original as purchased prior to any restore.
 
Country:  United States of America (USA)
Manufacturer / Brand:  General Household Utilities Co. (Grunow); Chicago Ill.
Brand
 
Grunow (trade name)
Year: 1936 Category: Broadcast Receiver - or past WW2 Tuner
Valves / Tubes 7: 6A8 6K7 6K7 6Q7 6E5 6F6 5W4
Main principle Superheterodyne (common); ZF/IF 465 kHz
Tuned circuits 9 AM circuit(s)
Wave bands Broadcast plus 2 Short Wave bands.
Details
Power type and voltage Alternating Current supply (AC)
Loudspeaker Electro Magnetic Dynamic LS (moving-coil with field excitation coil)
Power out
from Radiomuseum.org Model: Grunow 731 Ch= 7-M - General Household Utilities Co
Material Wooden case
Shape Console with any shape - in general
Notes Tuning eye; different power transformers are used for 115 V (50-60 cycle), 115 V (25-50 cycle) or 115, 135, 220, 250 V (50-60 cycle) mains supply.
Source of data Pre-War Consoles
Circuit diagram reference Rider's Perpetual, Volume 8 = 1937 and before

Model page created by Hans-Joachim Korn † 16.11.15. See "Data change" for further contributors.



All listed radios etc. from General Household Utilities Co. (Grunow); Chicago Ill.
Here you find 138 models, 99 with images and 126 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.




  
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