• Country
• United States of America (USA)

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

• Year
• 1938–1945 ?

• Category
• Amateur-Receiver (amateur bands, may include broadcast bands)

• Radiomuseum.org ID
• 49584

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

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

• Number of Tubes
• 9

• Valves / Tubes
• 6K7 6J7 6K7 6K7 6C8G 6J7 6J7 6F8G 6F6G

• Main principle
• Superhet with RF-stage; ZF/IF 456 kHz

• Wave bands
• Broadcast plus more than 2 Short Wave bands.

• Power type and voltage
• Storage and/or dry batteries / 180 Volt

• Loudspeaker
• - For headphones or amp.

• Material
• Metal case

• from Radiomuseum.org
• Model: NC-100AB - National Company; Cambridge &

• Shape
• Tablemodel, with any shape - general.

• Notes
• coverage 540 kHz - 30 MHz, AM, CW(BFO);
  battery model, can be operated with optional vibrator pack, voltage B+ 180V;
  matching speaker DCS-8

• External source of data
• Ernst Erb

• Source of data
• Shortwave Receivers - Past & Present (3rd ed.)

• Circuit diagram reference
• Rider's Perpetual, Volume 14 = 1944 = before 1943

• 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)