• Country
• United States of America (USA)

• Manufacturer / Brand
• Steinite Radio Co., Warwick Mfg.Co.; Atchinson

• Year
• 1929

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 59958

• • Brand: Marvel

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

• Number of Tubes
• 9

• Valves / Tubes
• 27 27 27 27 27 50 50 81 81

• Main principle
• TRF without regeneration; 2 AF stage(s); Neutrodyne

• Tuned circuits
• 4 AM circuit(s)

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• Alternating Current supply (AC) / 90-120 Volt

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

• from Radiomuseum.org
• Model: 50-A - Steinite Radio Co., Warwick

• Notes
• Push-pull audio amplifier.

• External source of data
• Ernst Erb

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

• Mentioned in
• Rider's 1-1, 1-2

• Other Models

• Here you find 90 models, 26 with images and 45 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Steinite Radio Co., Warwick Mfg.Co.; Atchinson