• Country
• United States of America (USA)

• Manufacturer / Brand
• Silver - Marshall; Chicago, IL

• Year
• 1931

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 57976

Click on the schematic thumbnail to request the schematic as a free document.

• Number of Tubes
• 9

• Valves / Tubes
• 51 24 27 51 51 27 47 47 80

• Main principle
• Superhet with RF-stage; ZF/IF 175 kHz; Screengrid 1926-1935

• Tuned circuits
• 9 AM circuit(s)

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• Alternating Current supply (AC)

• Loudspeaker
• Electro Magnetic Dynamic LS (moving-coil with field excitation coil) / Ø 10 inch = 25.4 cm

• Material
• Wooden case

• from Radiomuseum.org
• Model: D - Silver - Marshall; Chicago, IL

• Shape
• Console, Lowboy (legs < 50 %).

• Dimensions (WHD)
• 24 x 40 x 14 inch / 610 x 1016 x 356 mm

• Notes

• Push-pull audio output stage.

• External source of data
• Ernst Erb

• Circuit diagram reference
• Rider's Perpetual, Volume 1 = 1931/1934 (for 1919-1931)

• 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