• Country
• United States of America (USA)

• Manufacturer / Brand
• Harper Radio Laboratory; Chicago (IL)

• Year
• 1922

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 234704

• Number of Tubes
• 3

• Valves / Tubes

• Main principle
• TRF with regeneration; 1 AF stage(s); Super Regenerativ

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• Storage and/or dry batteries / 6 & 90 Volt

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

• Material
• Various materials

• from Radiomuseum.org
• Model: Armstrong Super-Regenerative Receiving Set - Harper Radio Laboratory;

• Shape
• Tablemodel, with any shape - general.

• Notes

• Armstrong Super-Regenerative Receiving Set.

   

• Literature/Schematics (1)
• Radio Digest Illustrated, 1922 Aug. 12, p. 7

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

• Other Models

• Here you find 1 models, 1 with images and 0 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Harper Radio Laboratory; Chicago (IL)