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Majestic 91 Ch= 90-B (or 90)

Majestic 91 Ch= 90-B ; Grigsby-Grunow - (ID = 216618) Radio
 
Majestic 91 Ch= 90-B ; Grigsby-Grunow - (ID = 450663) Radio
 
Majestic 91 Ch= 90-B ; Grigsby-Grunow - (ID = 677438) Radio
 
Majestic 91 Ch= 90-B ; Grigsby-Grunow - (ID = 677441) Radio
 
Majestic 91 Ch= 90-B ; Grigsby-Grunow - (ID = 677442) Radio
 
Majestic 91 Ch= 90-B ; Grigsby-Grunow - (ID = 677443) Radio
 
Majestic 91 Ch= 90-B ; Grigsby-Grunow - (ID = 677444) Radio
 
Majestic 91 Ch= 90-B ; Grigsby-Grunow - (ID = 677445) Radio
Majestic 91 Ch= 90-B ; Grigsby-Grunow - (ID = 451023) Radio Majestic 91 Ch= 90-B ; Grigsby-Grunow - (ID = 451024) Radio
Majestic 91 Ch= 90-B ; Grigsby-Grunow - (ID = 450691) Radio Majestic 91 Ch= 90-B ; Grigsby-Grunow - (ID = 2467450) Radio
Majestic 91 Ch= 90-B ; Grigsby-Grunow - (ID = 2467451) Radio Majestic 91 Ch= 90-B ; Grigsby-Grunow - (ID = 2467452) Radio
Majestic 91 Ch= 90-B ; Grigsby-Grunow - (ID = 2467453) Radio Majestic 91 Ch= 90-B ; Grigsby-Grunow - (ID = 2467454) Radio
Majestic 91 Ch= 90-B ; Grigsby-Grunow - (ID = 2260630) Radio Majestic 91 Ch= 90-B ; Grigsby-Grunow - (ID = 1010856) Radio
Use red slider bar for more.
Majestic 91 Ch= 90-B ; Grigsby-Grunow - (ID = 451023) Radio
Grigsby-Grunow -: Majestic 91 Ch= 90-B [Radio] ID = 451023 509x700
Select picture or schematic to display from thumbnails on the right and click for download.
For model Majestic 91 Ch= 90-B (or 90), 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: 1929/1930 Category: Broadcast Receiver - or past WW2 Tuner
Valves / Tubes 8: 27 27 27 27 27 45 45 80
Main principle TRF without regeneration; 1 AF stage(s); Neutrodyne
Tuned circuits 5 AM circuit(s)
Wave bands Broadcast only (MW).
Details
Power type and voltage Alternating Current supply (AC) / Adjustment plate for 105, 115 and 125 Volt
Loudspeaker Electro Magnetic Dynamic LS (moving-coil with field excitation coil) / Ø 10 inch = 25.4 cm
Power out
from Radiomuseum.org Model: Majestic 91 Ch= 90-B - Grigsby-Grunow -Hinds Co.
Material Wooden case
Shape Console, Lowboy (legs < 50 %).
Notes

The "Majestic 91" has an "Early English style cabinet" with stretcher base. It was made with two slightly different chassis outfits, the chassis 90 or the chassis 90-B.
The chassis 90 uses separate Power Supply 9P3 or 9P6. THe Chassis 90-B has an integral Power Supply. This is one of the models using the chassis 90-B - often incorrectly named model Majestic 90-B. The chassis 90-B comes for 50-60 cycles or 25-40 cycles AC. Reason: There are two different values for the power supply: 3 condensers for 2 MF or two of them for 4 MF (for 25-40 cycles). For the antenna there is a local distance switch.

The chassis 90 and 90-B from Grigsby-Grunow Co. have a 5 gang variable condensator for tuning the T.R.F. balanced circuit with a single control. The selectivity control or trimmer functions by varying the inductance of the antenna input coil and permits adjusting the input circuit to exact resonance with the other tuned circuits. The detector tube feeds (via R.F. choke) directly the transformer for the push-pull output which drive the so called "Super-Dynamic Speaker" model G-3 from Grigsby-Grunow Company in Chicago. The models Majestic 90, Majestic 91 and Majestic 93 with its different cases use the same chassis 90-B, while chassis 90 is used in console models 91 and 92. This model 91 here is the only one where both chassis versions were applied. Since there is no way to tell from pictures which version found use, we decided (as an exception) to mention both chassis in one model together.

Note also that the pictures currently associated with this model have some differences in cabinet style.

Price in first year of sale 137.50 $
Source of data Pre-War Consoles
Circuit diagram reference Rider's Perpetual, Volume 1 = 1931/1934 (for 1919-1931)
Mentioned in The Radio Collector's Directory and Price Guide 1921 - 1965
Literature/Schematics (1) Beitman Radio Diagrams, Vol. 01, 1926-1938
Literature/Schematics (2) Radio Broadcast, Apr 1930, p. 354

Model page created by Walter Wiesmüller † May 2012. See "Data change" for further contributors.



All listed radios etc. from Grigsby-Grunow (-Hinds) Co. (Majestic pre 1933); Chicago (IL)
Here you find 200 models, 118 with images and 155 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.



 


Forum contributions about this model
Grigsby-Grunow -: Majestic 91 Ch= 90-B
Threads: 1 | Posts: 5
Hits: 285     Replies: 4
grigsby-g: Wrong cabinet in web page
Grant Bruner
06.Jan.20
  1

In the web Page majestic_91_ch_90_b90, The Cabinet posted by Aleksander Kowal, does not apear to be the corect one. The chasis is correct though. Please let me know your thoughts on this.

David Erali
07.Jan.20
  2

Grant:  You are correct that there are two different models on this page (maybe 3).  If we assume that picture 451023 from Konrad Birkner, along with the print ad are correct, then all of the other models are different.  One confusing issue is that the model of Gary Streeter has a label photo that shows this is a model 91 (picture 226038).  The picture from Richard Adams (1010856) has 4 knobs, as opposed to three for the other models.  Note also that I think the bottom two knobs on the Kowal model are incorrect.

Now I will really confuse things.  I actually have a model that looks exactly like the models from Kowal and Streeter.  I had removed and sold the chassis around 30 years ago, but I still have the cabinet with the label on the bottom shelf.  It is a model 93.  RMorg has  two model 93 pages - one for Australia and one for USA using the same ad.  They look very different from my model 93.  It is possible that the model 93 based on the ad is incorrect. 

I also had another similar Majestic that looked identical from the front, but did not have the switches on the side of the cabinet.  I sold this years ago and only have a photo of the front.  So the model number is unknown.

At this point, I am unsure of what to do.  More research is required.

Martin Kent
07.Jan.20
  3

Dave,

Thanks for mentioning the Australian Majestics. You have helped to uncover an error. These so called Australian Majestics were in fact U.S. exports & the Majestic Radio Co. of Sydney had nothing to do with them. (Majestic Radio Co. of Sydney was established in 1933!!).

Majestic radios were sold in Australia during 1929 & 1930. The importers were Firth Brothers (Precedent Radio). U.S radio exports ceased in Australia in 1930 due to restrictive trade tariffs.

 

Grant Bruner
11.Jan.20
  4

I think I may have cracked the code, in so far as the model numbers and chassis numbers involved. I have created an extensive library with the four chassis involved and the Australia one. After doing extensive searchs on the internet, I think have come up with most of the information involved. As there are many pictures in mutiple directories, is there a way, that I can send you a compressed file, with all the information involved. Some of it, is from the original pages, and much more is from the internet searches that I have completed.

David Erali
11.Jan.20
  5

Grant:

Please send your file(s) to me at dray49@comcast.net and I will take a look at them.

Dave

 
Grigsby-Grunow -: Majestic 91 Ch= 90-B
End of forum contributions about this model

  
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