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Majestic 20 Ch= 20

Majestic 20 Ch= 20; Grigsby-Grunow - (ID = 678002) Radio
 
Majestic 20 Ch= 20; Grigsby-Grunow - (ID = 678003) Radio
 
Majestic 20 Ch= 20; Grigsby-Grunow - (ID = 678004) Radio
Majestic 20 Ch= 20; Grigsby-Grunow - (ID = 1568227) Radio Majestic 20 Ch= 20; Grigsby-Grunow - (ID = 1568228) Radio
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Majestic 20 Ch= 20; Grigsby-Grunow - (ID = 1568227) Radio
Grigsby-Grunow -: Majestic 20 Ch= 20 [Radio] ID = 1568227 461x720
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For model Majestic 20 Ch= 20, Grigsby-Grunow (-Hinds) Co. (Majestic pre 1933); Chicago (IL)
 
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 20 Ch= 20 - Grigsby-Grunow -Hinds Co.
Material Wooden case
Shape Console, Lowboy (legs < 50 %).
Notes Push-pull af output stage.
External source of data Ernst Erb
Circuit diagram reference Rider's Perpetual, Volume 1 = 1931/1934 (for 1919-1931)
Literature/Schematics (1) Beitman Radio Diagrams, Vol. 01, 1926-1938
Literature/Schematics (2) Collector's Guide to Antique Radios (7th Edition)


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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