• Country
• United States of America (USA)

• Manufacturer / Brand
• Setchell Carlson, Inc.; St.Paul (MN)

• Year
• 1943

• Category
• Military Receiver

• Radiomuseum.org ID
• 184634

• • Brand: Doraphone

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

• Number of Tubes
• 5

• Valves / Tubes
• 14H7 14J7 14H7 14R7 28D7

• Main principle
• Superhet with RF-stage; ZF/IF 135 kHz; 2 AF stage(s)

• Tuned circuits
• 7 AM circuit(s)

• Wave bands
• Wave Bands given in the notes.

• Power type and voltage
• Storage and/or dry batteries / 24-28 Volt

• Loudspeaker
• - For headphones or amp.

• Power out
• 0.3 W (unknown quality)

• Material
• Metal case

• from Radiomuseum.org
• Model: Beacon Receiver 524 BC-1206 - Setchell Carlson, Inc.; St.

• Shape
• Rack

• Dimensions (WHD)
• 105 x 105 x 175 mm / 4.1 x 4.1 x 6.9 inch

• Notes

• Aircraft "Range Receiver" BC-1206, 195 - 400 kHz, not a direction finder but indicating if the aircraft was within range of a specific beacon or other station. 24 - 28V DC used for both heaters and anode voltage, very compact design for use in small aircraft.

  Carlson apparently also marketed the same radio under model number "524" for civil aviation.

• Net weight (2.2 lb = 1 kg)
• 1.6 kg / 3 lb 8.4 oz (3.524 lb)

• Literature/Schematics (1)
• -- Original-techn. papers. (Instruction Manual Model 524 Beacon Receiver)

• Literature/Schematics (2)
• The Surplus Handbook - Receivers and Transmitters (pag. 57-58)

• Other Models

• Here you find 127 models, 70 with images and 99 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Setchell Carlson, Inc.; St.Paul (MN)