• Country
• United States of America (USA)

• Manufacturer / Brand
• Halson Radio Mfg. Co.; New York City (NY)

• Year
• 1933

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 44006

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

• Number of Tubes
• 4

• Valves / Tubes
• 78 77 43 25Z5

• Main principle
• TRF without regeneration; 1 AF stage(s)

• Tuned circuits
• 2 AM circuit(s)

• Wave bands
• Broadcast only (MW).

• Power type and voltage
• AC/DC-set / 115 Volt

• Loudspeaker
• -Loudspeaker incorporated, but system not known.

• Material
• Wooden case

• from Radiomuseum.org
• Model: NS-40 - Halson Radio Mfg. Co.; New

• Shape
• Tablemodel, Tombstone = decorative upright, not cathedral but can have rounded edges.

• External source of data
• Ernst Erb

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

• Mentioned in
• Machine Age to Jet Age III

• Literature/Schematics (1)
• Cathedral & Tombstone Radios (page 134.)

• Other Models

• Here you find 106 models, 39 with images and 65 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Halson Radio Mfg. Co.; New York City (NY)