28 AC Ch= 29 RF
United American Bosch (Magneto Corporation); Springfield (MA)
- Country
- United States of America (USA)
- Manufacturer / Brand
- United American Bosch (Magneto Corporation); Springfield (MA)
- Year
- 1928
- Category
- Broadcast Receiver - or past WW2 Tuner
- Radiomuseum.org ID
- 32457
-
- alternative name: American Bosch Magneto
- Brand: Essex
Click on the schematic thumbnail to request the schematic as a free document.
- Number of Tubes
- 8
- Main principle
- TRF without regeneration; Neutrodyne
- Tuned circuits
- 4 AM circuit(s)
- Wave bands
- Broadcast only (MW).
- Power type and voltage
- Alternating Current supply (AC) / 105; 115; 125 Volt
- Loudspeaker
- - This model requires external speaker(s).
- Material
- Wooden case
- from Radiomuseum.org
- Model: 28 AC Ch= 29 RF - United American Bosch Magneto
- Shape
- Tablemodel, Box - most often with Lid (NOT slant panel).
- Notes
- One dial (primary tuning control knob) for a 4-ganged tuning; Push-pull AF output. At that time the company was named "American Bosch Magneto Corproation" of Springfield, MA. - yet no "United" in the name. The cabinet is solid Honduras Mahogany with an oval ivory inlay on the front panel.
- Price in first year of sale
- 132.00 $
- External source of data
- Ernst Erb
- Source of data
- Radio Collector`s Guide 1921-1932
- Circuit diagram reference
- Rider's Perpetual, Volume 1 = 1931/1934 (for 1919-1931)
- Mentioned in
- Collector's Guide to Antique Radios 4. Edition
- Literature/Schematics (1)
- Radio Manufacturers of the 1920s, Vol 1
- Literature/Schematics (2)
- Radio Broadcast, Oct. 1928, Page 369
- Other Models
-
Here you find 414 models, 164 with images and 272 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
All listed radios etc. from United American Bosch (Magneto Corporation); Springfield (MA)
Collections
The model 28 AC is part of the collections of the following members.