• Country
• United States of America (USA)

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

• Year
• 1959–1963

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

• Radiomuseum.org ID
• 89558

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

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

• Number of Tubes
• 16

• Valves / Tubes
• 6BZ6 6BZ6 6BE6 6BE6 6BE6 6BZ7 6BA6 6BA6 6BA6 6AL5 6BE6 6U8 6AL5 12AT7 6AQ5 5U4GB 0B2 4H4C

• Main principle
• Superhet, double/triple conversion; ZF/IF 1720/455 kHz

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

• Power type and voltage
• Alternating Current supply (AC) / 115 / 230 Volt

• Loudspeaker
• - For headphones or amp.

• Power out
• 1 W (unknown quality)

• Material
• Metal case

• from Radiomuseum.org
• Model: NC-400 - National Company; Cambridge &

• Shape
• Tablemodel, with any shape - general.

• Dimensions (WHD)
• 482 x 279 x 406 mm / 19 x 11 x 16 inch

• Notes
• coverage 540 kHz - 31 MHz, bandspread in 80 - 10 m ham bands, AM, CW(BFO);
  single conversion below 7 MHz, 5 crystal controlled fixed frequency positions;
  optional NTS-2 speaker, optional XCU-400 crystal calibrator, optional MX-400 50 fixed frequencies unit, optional NC-400DMK diversity modification kit.

• Price in first year of sale
• 895.00 $

• Source of data
• Communications Receivers

• Mentioned in
• Shortwave Receivers - Past & Present (3rd ed.)

• Author
• Model page created by Martin Bösch. See "Data change" for further contributors.

• Other Models

• Here you find 445 models, 284 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)