- Country
- United States of America (USA)
- Manufacturer / Brand
- Silver - Marshall; Chicago, IL
- Year
- 1929 ?
- Category
- Broadcast Receiver - or past WW2 Tuner
- Radiomuseum.org ID
- 103632
Click on the schematic thumbnail to request the schematic as a free document.
- Number of Tubes
- 4
- Main principle
- TRF without regeneration; Screengrid 1926-1935
- Tuned circuits
- 5 AM circuit(s)
- Wave bands
- Broadcast only (MW).
- Power type and voltage
- Powered by external power supply or a main unit. / AC 2.5 & DC 180 Volt
- Loudspeaker
- - For headphones or amp.
- Material
- Metal case
- from Radiomuseum.org
- Model: SM-712 - Silver - Marshall; Chicago, IL
- Shape
- Chassis only or for «building in»
- Dimensions (WHD)
- 16.5 x 0 x 9.5 inch / 419 x 0 x 241 mm
- Notes
- The tube 24 arrived not before April 1929 (as UY224).
Anode bend detection.
Used with 677B Amplifier.
- Price in first year of sale
- 108.00 $
- Circuit diagram reference
- Rider's Perpetual, Volume 1 = 1931/1934 (for 1919-1931)
- Literature/Schematics (1)
- Chicago Salvage Stock Store catalogue, 1929?
- Author
- Model page created by Vitor Oliveira. See "Data change" for further contributors.
- Other Models
-
Here you find 225 models, 116 with images and 122 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
All listed radios etc. from Silver - Marshall; Chicago, IL