• Country
• United States of America (USA)

• Manufacturer / Brand
• Murdock, WM.J. Co.; Chelsea

• Year
• 1927 ?

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 66875

• • alternative name: William J. Murdock Co.

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

• Number of Tubes
• 7

• Valves / Tubes

• Main principle
• TRF without regeneration; Neutrodyne

• Tuned circuits
• 3 AM circuit(s)

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• Storage and/or dry batteries

• Loudspeaker
• - For headphones or amp.

• Material
• Wooden case

• from Radiomuseum.org
• Model: 7 Tube Battery - Murdock, WM.J. Co.; Chelsea

• Shape
• Tablemodel, Box - most often with Lid (NOT slant panel).

• External source of data
• Ernst Erb

• Circuit diagram reference
• Rider's Perpetual, Volume 6 = 1935 and before

• Other Models

• Here you find 88 models, 70 with images and 6 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Murdock, WM.J. Co.; Chelsea