• Country
• United States of America (USA)

• Manufacturer / Brand
• Gilfillan Bros.Inc.; Los Angeles (CA)

• Year
• 1928 ?

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 166194

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

• Number of Tubes
• 8

• Valves / Tubes
• 27 27 27 27 27 12 12 80

• Main principle
• TRF without regeneration; Neutrodyne

• Tuned circuits
• 4 AM circuit(s)

• Wave bands
• Broadcast only (MW).

• 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: 33 [8 tube] - Gilfillan Bros.Inc.; Los

• Notes
• push-pull af output stage.

• Circuit diagram reference
• Rider's Perpetual, Volume 1 = 1931/1934 (for 1919-1931)

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

• Other Models

• Here you find 186 models, 115 with images and 129 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Gilfillan Bros.Inc.; Los Angeles (CA)