• Country
• United States of America (USA)

• Manufacturer / Brand
• Simplex Radio Co.; Philadelphia, PA and Sandusky, OH

• Year
• 1933 ?

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 150314

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

• Number of Tubes
• 4

• Valves / Tubes
• 78 77 42 80

• Main principle
• TRF (Tuned-Radio-Frequency but use of regeneration unknown)

• Tuned circuits
• 2 AM circuit(s)

• Wave bands
• Broadcast and Short Wave (SW).

• Power type and voltage
• Alternating Current supply (AC) / 110 Volt

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

• from Radiomuseum.org
• Model: R AC [42 tube] - Simplex Radio Co.;

• Notes

• According tu the tube line up, the model is 1933 or younger.

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

• Author
• Model page created by Hans-Joachim Korn † 16.11.15. See "Data change" for further contributors.

• Other Models

• Here you find 178 models, 91 with images and 64 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Simplex Radio Co.; Philadelphia, PA and Sandusky, OH