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Grunow 721 Ch= 7-DB

Grunow 721 Ch= 7-DB; General Household (ID = 681721) Radio
 
Grunow 721 Ch= 7-DB; General Household (ID = 681722) Radio
 
Grunow 721 Ch= 7-DB; General Household (ID = 681723) Radio
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Grunow 721 Ch= 7-DB; General Household (ID = 681721) Radio
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Country:  United States of America (USA)
Manufacturer / Brand:  General Household Utilities Co. (Grunow); Chicago Ill.
Brand
 
Grunow (trade name)
Year: 1935 Category: Broadcast Receiver - or past WW2 Tuner
Valves / Tubes 6: 1C6 34 30 32 30 19
Main principle Superheterodyne (common); ZF/IF 465 kHz
Wave bands Broadcast, Short Wave(s) and Police.
Details
Power type and voltage Storage and/or dry batteries / 2 ; 9 ; 45 ; 135 Volt
Loudspeaker Magnetic loudspeaker (reed) generic. / Ø 10 inch = 25.4 cm
Power out
from Radiomuseum.org Model: Grunow 721 Ch= 7-DB - General Household Utilities Co
Material Wooden case
Shape Console with any shape - in general
Notes 2 Volt Farm radio.
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


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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