• Country
• United States of America (USA)

• Manufacturer / Brand
• National Company; Cambridge & Malden (MA)

• Year
• 1927 ?

• Category
• Broadcast Receiver - or past WW2 Tuner

• Radiomuseum.org ID
• 49627

• • alternative name: National Toy Co.
  • Brand: Thrillbox

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

• Number of Tubes
• 2

• Valves / Tubes
• UX222 UX112A

• Main principle
• TRF with regeneration

• Wave bands
• Short Wave (SW only)

• Power type and voltage
• Storage and/or dry batteries / 6 / 45/67/135 Volt

• Loudspeaker
• - For headphones or amp.

• Material
• Various materials

• from Radiomuseum.org
• Model: Thrill Box SW-2 - National Company; Cambridge &

• Shape
• Tablemodel, with any shape - general.

• Notes
• advertised as "National Screen-Grid Short-Wave Tuner", no official number, often referenced as "SW-2"
  four plug-in coils: 15,5-26,6 m / 23,5-41 m / 37,5-65 m / 64-115 m
  also sold as kit 34,60 US$, metal cabinet 6,50 US$

• Price in first year of sale
• 45.00 $

• External source of data
• Ernst Erb

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

• Other Models

• Here you find 446 models, 285 with images and 189 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from National Company; Cambridge & Malden (MA)