• Country
• United States of America (USA)

• Manufacturer / Brand
• Tyrman Electric Corporation; Chicago, IL

• Year
• 1928

• Category
• Kit (Parts plus instruction) or building instructions only

• Radiomuseum.org ID
• 63779

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

• Number of Tubes
• 7

• Valves / Tubes
• 122 122 122 201A 201A 201A 171A

• Main principle
• Superheterodyne (common); ZF/IF 350 kHz; 3 AF stage(s); Screengrid 1926-1935

• Tuned circuits
• 5 AM circuit(s)

• Wave bands
• Broadcast only (MW).

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

• Loudspeaker
• - This model requires external speaker(s).

• Material
• Various materials

• from Radiomuseum.org
• Model: Shielded Grid 7 7 - Tyrman Electric Corporation;

• Notes

• Two dials (primary tuning control knobs)

• Price in first year of sale
• 98.00 $

• External source of data
• Ernst Erb

• Source of data
• Radio Collector`s Guide 1921-1932

• Mentioned in
• Radio News (Jan 1928)

• Other Models

• Here you find 6 models, 6 with images and 3 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Tyrman Electric Corporation; Chicago, IL