- Country
- United States of America (USA)
- Manufacturer / Brand
- Auto Indicator Co.; Grand Rapids, Michigan
- Year
- 1924
- Category
- Audio Amplifier or -mixer
- Radiomuseum.org ID
- 33562
- Number of Tubes
- 2
- Main principle
- Audio-Amplification; 2 AF stage(s)
- Wave bands
- - without
- Power type and voltage
- Dry Batteries
- Loudspeaker
- Horn
- Material
- Leather / canvas / plastic - over other material
- from Radiomuseum.org
- Model: Adaunit - Auto Indicator Co.; Grand
- Shape
- Portable set > 8 inch (also usable without mains)
- Dimensions (WHD)
- 9 x 13.25 x 8.75 inch / 229 x 337 x 222 mm
- Notes
- Auto Indicator Co. "Adaunit" carrying case for the Pocket Radio. This carrying case featured a Two-Stage Audio Amplifier and a built-in horn speaker making the Pocket Radio a self contained portable unit. There was room for all of the necessary batteries required inside the leather covered case.
- Net weight (2.2 lb = 1 kg)
- 19 lb (19 lb 0 oz) / 8.626 kg
- Price in first year of sale
- 87.00 $
- External source of data
- Ernst Erb
- Source of data
- Radio Collector`s Guide 1921-1932
- Literature/Schematics (1)
- December 1924 Popular Radio magazine advertisement
- Other Models
-
Here you find 3 models, 3 with images and 0 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
All listed radios etc. from Auto Indicator Co.; Grand Rapids, Michigan