• Country
• United States of America (USA)

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

• Year
• 1932

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 57948

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

• Number of Tubes
• 13

• Valves / Tubes
• 59 56 58 58 56 56 56 56 unknown_Tube unknown_Tube 2A5 2A5 unknown_Tube

• Main principle
• Superheterodyne (common); ZF/IF 465 kHz

• Tuned circuits
• 8 AM circuit(s)

• Wave bands
• Broadcast plus more than 2 Short Wave bands.

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

• Loudspeaker
• Electro Magnetic Dynamic LS (moving-coil with field excitation coil)

• from Radiomuseum.org
• Model: 729-SW - Silver - Marshall; Chicago, IL

• Notes
• Push-pull af output stage.

• External source of data
• Ernst Erb

• Circuit diagram reference
• Rider's Perpetual, Volume 4 = ca. 1934 and before

• 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