History of the manufacturer
Emerson Radval Co.; New York City
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Both will display your name after an officer has activated your content, and will be displayed under «Further details ...» plus the text also in the forum.
| Name: | Emerson Radval Co.; New York City (USA) |
| Abbreviation: | eme |
| Products: | Tube manufacturer |
| Summary: |
Emerson Radval Corporation, 25 West 43rd Street, New York City, NY - which should not be confused with the Emerson Radio & Phonograph Company - designed and marketed the "Emerson Multivalve", also called just "Multivalve" or "Three-in-one". The actual manufacturer was Cleartron Vacuum Tube Co., 28 West 44th Street - near the back door of Emerson Radval ... |
| History: |
In an ad in Radio News from March 1927 theEmerson Radval Corporation quoted from the "New York Herald Tribune" of December 19th 1926: "The new MULTI VALVE may well revolutionize the manufacture and use of Radio Apparatus." They also described the special tube at other places as "a seven-element tube with 201A filament, three plates and three grids."
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Some models:
| Country | Year | Name | 1st Tube | Notes |
|---|---|---|---|---|
| USA | 99 | Dublette zu ID = 109661 | Ingraham design. | |
| USA | 52 | 136B | 12SA7 | Built-in Loop Antenna Alternative miniature tubes 12BE6 12BA6 12AT6 50B5 35W4. Simil... |
[rmxhdet-en]
Further details for this manufacturer by the members (rmfiorg):
From "The Radio Dealer", front page ad, March 1927, Vol. 10, No. 6.
Radio News November 1925
Emerson Multivalve advert Radio Engineering September 1927
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