• Country
• United States of America (USA)

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

• Year
• 1953–1956

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

• Radiomuseum.org ID
• 88078

• • 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
• 6BA6 6BE6 6C4 6BD6 6BD6 6AL5 12AX7 6AQ5 5Y3GT

• Main principle
• Superhet with RF-stage; ZF/IF 455 kHz

• Tuned circuits
• 9 AM circuit(s)

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

• Power type and voltage
• Alternating Current supply (AC) / 105-120 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 5 inch = 12.7 cm

• Power out
• 1.5 W (unknown quality)

• Material
• Metal case

• from Radiomuseum.org
• Model: World Master NC-88 - National Company; Cambridge &

• Shape
• Tablemodel, with any shape - general.

• Dimensions (WHD)
• 419 x 222 x 269 mm / 16.5 x 8.7 x 10.6 inch

• Notes

• Coverage 540 kHz - 40 MHz, bandspread in 80 - 10 m HAM bands; AM/CW (SSB). Without S-meter.

  See also the similar model NC-98 with S-meter, crystal filter and selectivity switch, but without built-in speaker.

• Net weight (2.2 lb = 1 kg)
• 13.6 kg / 29 lb 15.3 oz (29.956 lb)

• Price in first year of sale
• 120.00 $

• Source of data
• Communications Receivers

• Mentioned in
• Shortwave Receivers - Past & Present (3rd ed.) (Description in "Radio & Television News" March 1954)

• Literature/Schematics (1)
• Montgomery Ward Catalogs (Wards, Airline) (Fall/Winter 1954/55, page 665.)

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

• 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)