- Country
- United States of America (USA)
- Manufacturer / Brand
- Edison, Thomas A., North American Phonograph / National Phonograph; Orange, NJ
- Year
- 1929 ?
- Category
- Broadcast Receiver - or past WW2 Tuner
- Radiomuseum.org ID
- 130142
Unfortunately, were kept only the chassis.
Unfortunately, were kept only the chassis.
Click on the schematic thumbnail to request the schematic as a free document.
- Number of Tubes
- 9
- Main principle
- TRF without regeneration; 2 AF stage(s); Neutrodyne
- Tuned circuits
- 4 AM circuit(s)
- Wave bands
- Broadcast only (MW).
- Power type and voltage
- Direct Current supply (DC) / 105; 115; 125 Volt
- Loudspeaker
- Electro Magnetic Dynamic LS (moving-coil with field excitation coil) / Ø 35 cm = 13.8 inch
- Material
- Wooden case
- from Radiomuseum.org
- Model: R-4 DC Ch= 7R + 8P - Edison, Thomas A., North
- Shape
- Console, Highboy (legs > 50 %).
- Notes
- Consists of Receiver unit 7-R and Power unit 8-P. Push-pull output stage.
Model "R4" also incorporates the "Light-O-Matic" dial drive mechanism.
- Circuit diagram reference
- Rider's Perpetual, Volume 3 = 1933 and before
- Mentioned in
- Pre-War Consoles
- Literature/Schematics (1)
- Rider's Perpetual, Volume 1 = 1931/1934 (1919 to 1931) (Manufacturers Literature)
- Other Models
-
Here you find 89 models, 71 with images and 36 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
All listed radios etc. from Edison, Thomas A., North American Phonograph / National Phonograph; Orange, NJ