• Country
• United States of America (USA)

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

• Year
• 1969

• Category
• Amateur TRX: Transmitter/Receiver (and Transceiver)

• Radiomuseum.org ID
• 287793

• • 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 12BE6 12BA6 12BA6 12BA6 12BA6 12BA6 12AX7 6AQ5 6GH8 6JD6 6GK6 6GH8 6LQ6 6LQ6 0A2

• Main principle
• Transceiver

• Wave bands
• Short Wave (SW only)

• Power type and voltage
• Powered by external power supply or a main unit.

• Loudspeaker
• - This model requires external speaker(s).

• Material
• Metal case

• from Radiomuseum.org
• Model: NCX-500 - National Company; Cambridge &

• Shape
• Tablemodel, with any shape - general.

• Notes

• The National NCX-500 is a transceiver operating on the 80, 40, 20, 15, and 10 meter bands with 500 watts PEP in SSB. 

• Net weight (2.2 lb = 1 kg)
• 15 lb (15 lb 0 oz) / 6.810 kg

• Price in first year of sale
• 249.95 USD

• Mentioned in
• QST (January 1969 page 125)

• Author
• Model page created by Wayne Childress. 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)