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Grunow 470 Ch= 4-C

Grunow 470 Ch= 4-C; General Household (ID = 681271) Radio
 
Grunow 470 Ch= 4-C; General Household (ID = 681272) Radio
 
Grunow 470 Ch= 4-C; General Household (ID = 681273) Radio
Grunow 470 Ch= 4-C; General Household (ID = 1140912) Radio Grunow 470 Ch= 4-C; General Household (ID = 1236898) Radio
Grunow 470 Ch= 4-C; General Household (ID = 1655154) Radio Grunow 470 Ch= 4-C; General Household (ID = 720613) Radio
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Grunow 470 Ch= 4-C; General Household (ID = 1140912) Radio
General Household: Grunow 470 Ch= 4-C [Radio] ID = 1140912 600x800
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For model Grunow 470 Ch= 4-C, General Household Utilities Co. (Grunow); Chicago Ill.
 
Country:  United States of America (USA)
Manufacturer / Brand:  General Household Utilities Co. (Grunow); Chicago Ill.
Brand
 
Grunow (trade name)
Year: 1935/1936 Category: Broadcast Receiver - or past WW2 Tuner
Valves / Tubes 4: 6A7 6F7 41 80
Main principle Superheterodyne (common); ZF/IF 490 or 465 kHz
Tuned circuits 5 AM circuit(s)
Wave bands Broadcast only (MW).
Details
Power type and voltage Alternating Current supply (AC) / 110 Volt
Loudspeaker Electro Magnetic Dynamic LS (moving-coil with field excitation coil) / Ø 8 inch = 20.3 cm
Power out
from Radiomuseum.org Model: Grunow 470 Ch= 4-C - General Household Utilities Co
Material Wooden case
Shape Tablemodel, Tombstone = decorative upright, not cathedral but can have rounded edges.
Dimensions (WHD) 10.75 x 13.875 x 7.25 inch / 273 x 352 x 184 mm
Price in first year of sale 22.50 $
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 6 = 1935 and before
Mentioned in Collector's Guide to Antique Radios (6th edition)
Literature/Schematics (1) Machine Age to Jet Age II (Rider's Perpetual, Volume 7 = 1936 and before)
Literature/Schematics (3) The Grunow Folder for 1936.


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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