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Grunow 750 "World Cruiser" Ch= 7-B

Grunow 750 'World Cruiser' Ch= 7-B; General Household (ID = 213348) Radio
 
Grunow 750 'World Cruiser' Ch= 7-B; General Household (ID = 681697) Radio
 
Grunow 750 'World Cruiser' Ch= 7-B; General Household (ID = 681698) Radio
 
Grunow 750 'World Cruiser' Ch= 7-B; General Household (ID = 681699) Radio
 
Grunow 750 'World Cruiser' Ch= 7-B; General Household (ID = 681700) Radio
Grunow 750 'World Cruiser' Ch= 7-B; General Household (ID = 906777) Radio Grunow 750 'World Cruiser' Ch= 7-B; General Household (ID = 206663) Radio
Grunow 750 'World Cruiser' Ch= 7-B; General Household (ID = 206664) Radio Grunow 750 'World Cruiser' Ch= 7-B; General Household (ID = 720885) Radio
Grunow 750 'World Cruiser' Ch= 7-B; General Household (ID = 906778) Radio Grunow 750 'World Cruiser' Ch= 7-B; General Household (ID = 906779) Radio
Grunow 750 'World Cruiser' Ch= 7-B; General Household (ID = 1654969) Radio Grunow 750 'World Cruiser' Ch= 7-B; General Household (ID = 1654970) Radio
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Grunow 750 'World Cruiser' Ch= 7-B; General Household (ID = 906777) Radio
General Household: Grunow 750 "World Cruiser" Ch= 7-B [Radio] ID = 906777 700x844
Select picture or schematic to display from thumbnails on the right and click for download.
For model Grunow 750 "World Cruiser" Ch= 7-B, General Household Utilities Co. (Grunow); Chicago Ill.:
By courtesy of guest Lew Magrish, USA and Steve Adams from radioattic.com.
 
Country:  United States of America (USA)
Manufacturer / Brand:  General Household Utilities Co. (Grunow); Chicago Ill.
Brand
 
Grunow (trade name)
Year: 1934 Category: Broadcast Receiver - or past WW2 Tuner
Valves / Tubes 7: 6D6 6A7 6F7 75 76 42 80
Main principle Superhet with RF-stage; ZF/IF 262 kHz; 2 AF stage(s)
Tuned circuits 7 AM circuit(s)
Wave bands Broadcast plus 2 Short Wave bands.
Details
Power type and voltage Alternating Current supply (AC) / 117 Volt
Loudspeaker Electro Magnetic Dynamic LS (moving-coil with field excitation coil)
Power out
from Radiomuseum.org Model: Grunow 750 "World Cruiser" Ch= 7-B - General Household Utilities Co
Material Wooden case
Shape Tablemodel, Tombstone = decorative upright, not cathedral but can have rounded edges.
Dimensions (WHD) 16.75 x 19.75 x 10.75 inch / 425 x 502 x 273 mm
Notes

This model uses a single stage of tuned RF amplification in the front end, with double tuning for the AM Broadcast Band to improve selectivity by way of a 4-segment tuning gang and additional set of coils. Double tuning is disabled on the shortwave bands to improve sensitivity.

Stein "Cathedral & Tombstone Radios" lists 2 bands for this model.

Collectors' prices  
Source of data Collector's Guide to Antique Radios (6th edition)
Circuit diagram reference Rider's Perpetual, Volume 5 = ca. 1934 and before
Mentioned in Table Top Radios Vol. 1 Stein 98
Literature/Schematics (1) Beitman Radio Diagrams, Vol. 01, 1926-1938
Literature/Schematics (2) Machine Age to Jet Age II (page 154.)
Literature/Schematics (3) Cathedral & Tombstone Radios (page 132.)
Literature/Schematics (4) The Grunow Folder for 1934.

Model page created by Walter Wiesmüller † May 2012. 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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