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Majestic Chassis 20

Majestic Chassis 20 ; Grigsby-Grunow - (ID = 678007) Radio
 
Majestic Chassis 20 ; Grigsby-Grunow - (ID = 678008) Radio
 
Majestic Chassis 20 ; Grigsby-Grunow - (ID = 678009) Radio
 
Majestic Chassis 20 ; Grigsby-Grunow - (ID = 1619779) Radio
 
Majestic Chassis 20 ; Grigsby-Grunow - (ID = 1619780) Radio
 
Majestic Chassis 20 ; Grigsby-Grunow - (ID = 1619781) Radio
 
Majestic Chassis 20 ; Grigsby-Grunow - (ID = 1619783) Radio
 
Majestic Chassis 20 ; Grigsby-Grunow - (ID = 1619784) Radio
 
Majestic Chassis 20 ; Grigsby-Grunow - (ID = 1619786) Radio
 
Majestic Chassis 20 ; Grigsby-Grunow - (ID = 1619787) Radio
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Majestic Chassis 20 ; Grigsby-Grunow - (ID = 678007) Radio
Select picture or schematic to display from thumbnails on the right and click for download.
 
Country:  United States of America (USA)
Manufacturer / Brand:  Grigsby-Grunow (-Hinds) Co. (Majestic pre 1933); Chicago (IL)
Year: 1931 Category: Broadcast Receiver - or past WW2 Tuner
Valves / Tubes 8: 51 27 51 51 27 45 45 80
Main principle Superhet with RF-stage; ZF/IF 175 kHz; Screengrid 1926-1935
Tuned circuits 7 AM circuit(s)
Wave bands Broadcast only (MW).
Details
Power type and voltage Alternating Current supply (AC) / 110; 220 Volt
Loudspeaker Electro Magnetic Dynamic LS (moving-coil with field excitation coil)
Power out
from Radiomuseum.org Model: Majestic Chassis 20 - Grigsby-Grunow -Hinds Co.
Material Metal case
Shape Chassis only or for «building in»
Notes Riders vol 1, Majestic 1-14 shows models 20, 21, 22, 23. The 20 can be misunderstood as a model, which is not the case. In 1-15 the 20 is clearly shown as being a chassis only.
External source of data Ernst Erb
Circuit diagram reference Rider's Perpetual, Volume 1 = 1931/1934 (for 1919-1931)


All listed radios etc. from Grigsby-Grunow (-Hinds) Co. (Majestic pre 1933); Chicago (IL)
Here you find 200 models, 118 with images and 156 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.



  
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