Name: | Operadio Corp.; St. Charles (IL) (USA) |
alternative name: | Operadio Mfg, |
Abbreviation: | operadio |
Products: | |
Summary: |
In the November 1924, The Radio Trade Directory, and also the August 1926 edition of the McGraw-Hill Radio Trade Directory under the headings manufacturers of Vacuum Tube Sets on page 82, the Operadio Corporation was located at 8 South Dearborn Street in Chicago, Illinois. |
Founded: | 1922 |
Production: | 1922 - 1927 |
History: |
Infos taken from the still in business successor company "DuKant" see dukcorp.com/History.asp1922 - Operadio Corporation is founded by J. McWilliams Stone. Product is first portable wireless radio. 1927 - Operadio stops making radios 1934 - Operadio goes into receivership 1951 - Operadio Manufacturing Company becomes Dukane Corporation see "Dukane".
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Country | Year | Name | 1st Tube | Notes |
---|---|---|---|---|
USA | 23 | 195$ | ||
USA | 25 | 1925 | Two dials (primary tuning control knobs) This radio was also exported to Australia in 1... | |
USA | 25 | 1926 Consolette | UV199 | self contained portable, includes frame aerial, batteries, and built in horn speaker. H... |
USA | 23/24 | 2 | UV199 | The original tube line up has to be UV199 if this model has arrived in 1923: The "... |
USA | 35 | 2478A | 56 | Push-pull af output stage; power transformer for 25 Hz. |
USA | 35 | 2483A | 2A3 | 2 push-pull af output stages; power transformer for 25 Hz. |
USA | 36 | 2677A | 57 | Push-pull af output stage; power transformer for 25 Hz. |
USA | 35 | 478A | 56 | Push-pull af output stage. |
USA | 35 | 478AH | 56 | Push-pull af output stage. |
USA | 35 | 483A | 2A3 | 2 push-pull af output stages. |
USA | 34 | 484 | 864 | |
USA | 34 | 484A | 864 |
Further details for this manufacturer by the members (rmfiorg):
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