• Country
• United States of America (USA)

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

• Year
• 1932

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 153938

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

• Number of Tubes
• 10

• Valves / Tubes

• Main principle
• Superheterodyne (common); ZF/IF 175 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
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil)

• from Radiomuseum.org
• Model: 728-SW [var 2] - Silver - Marshall; Chicago, IL

• Notes
• Push-pull af output stage; one speaker or two speakers.

• Circuit diagram reference
• Rider's Perpetual, Volume 3 = 1933 and before

• Author
• Model page created by Hans-Joachim Korn † 16.11.15. 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