- Country
- United States of America (USA)
- Manufacturer / Brand
- Operadio Corp.; St. Charles (IL)
- Year
- 1928/1929
- Category
- Loudspeaker, headphone or earphone
- Radiomuseum.org ID
- 228485
-
- alternative name: Operadio Mfg,
- Wave bands
- - without
- Loudspeaker
- Electro Magnetic Dynamic LS (moving-coil with field excitation coil)
- Material
- Wooden case
- from Radiomuseum.org
- Model: Geneva - Operadio Corp.; St. Charles IL
- Shape
- Table-Cathedral-Type (upright, round top or gothic arch, not rounded edges only).
- Notes
-
A table model Dynamic Speaker, scientifically constructed with a sounding board giving maximum baffle effect. Beautiful in design and finished in rich walnut. Furnished with the Operadio Dynamic Unit. 6 volt D. C. $55; 110 volt D. C. $60; 110 volt A. C. $70.
- Literature/Schematics (1)
- Radio Retailing (Radio & Television R.) (ad October 1928 page 43)
- Author
- Model page created by Heiko zur Mühlen. See "Data change" for further contributors.
- 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)