- Country
- United States of America (USA)
- Manufacturer / Brand
- Operadio Corp.; St. Charles (IL)
- Year
- 1923/1924
![perfect model](/img/sternRot.gif)
- Category
- Broadcast Receiver - or past WW2 Tuner
- Radiomuseum.org ID
- 49892
-
- alternative name: Operadio Mfg,
- Number of Tubes
- 6
- Tuned circuits
- 1 AM circuit(s)
- Wave bands
- Broadcast only (MW).
- Power type and voltage
- Dry Batteries
- Loudspeaker
- Horn
- Material
- Leather / canvas / plastic - over other material
- from Radiomuseum.org
- Model: 2 - Operadio Corp.; St. Charles IL
- Shape
- Portable set > 8 inch (also usable without mains)
- Notes
-
The original tube line up has to be UV199 if this model has arrived in 1923:
The "Saga of the vacuum tube" by Tyne tells us on page 314: "In April 1925 the UV199 was superseded by the UX199, announced August 1, 1925. Production continued up to 1931, although after 1927 few new receivers were built to use it. Nickel-plated contact pins were introduced in 1927."
After some time the UX tubes were noted only by the numbers and a bit later only by the last two digits. The UV199 was introduced in December 1922, the same time as the UV201A.
- Price in first year of sale
- 190.00 $
- External source of data
- Ernst Erb
- Source of data
- Radio Collector`s Guide 1921-1932
- Literature/Schematics (2)
- Radio Broadcast, Jul. 1924, p. 274
- Other Models
-
Here you find 66 models, 43 with images and 32 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
All listed radios etc. from Operadio Corp.; St. Charles (IL)
Collections
The model 2 is part of the collections of the following members.