• Country
• United States of America (USA)

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

• Year
• 1963–1967

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

• Radiomuseum.org ID
• 87767

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

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

• Number of Tubes
• 5

• Valves / Tubes
• 12BE6 12BA6 12AV6 50C5 35W4

• Main principle
• Superheterodyne (common); ZF/IF 455 kHz

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

• Power type and voltage
• Alternating Current supply (AC) / 117 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 4 inch = 10.2 cm

• Power out
• 1 W (unknown quality)

• Material
• Metal case

• from Radiomuseum.org
• Model: NC-77X - National Company; Cambridge &

• Shape
• Tablemodel, with any shape - general.

• Dimensions (WHD)
• 343 x 195 x 229 mm / 13.5 x 7.7 x 9 inch

• Notes

• The National NC-77X receiver is a general coverage receiver, covering .54-31 MHz in four bands in AM and CW (BFO). The bands are :540-1500 kHz, 1,5-4,5 MHz, 4,5-12 MHz and 12-31 MHz. AM, The NC-77X is a non-typical "All-American Five" AC/DC set in that it has an isolation transformer,

  The National NC-77XW is a walnut cased variant, which retailed for $90 US.

• Net weight (2.2 lb = 1 kg)
• 8.1 kg / 17 lb 13.5 oz (17.841 lb)

• Price in first year of sale
• 70.00 $

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

• Mentioned in
• Communications Receivers

• Literature/Schematics (1)
• Radio Shack 1964 catalog page 103

• 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)