• Country
• United States of America (USA)

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

• Year
• 1965

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

• Radiomuseum.org ID
• 167922

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

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

• Number of Tubes
• 19

• Valves / Tubes
• 6BZ6 12BE6 12BE6 12BE6 12BA6 12BA6 12BA6 12AX7 6AQ5 12BE6 6KE8 6GK6 6JB6 6JB6 12AT7 12AU8 6GH8 12AU7 6BA6 0A2

• Number of Transistors
• 2

• Semiconductors

• Main principle
• Transceiver; ZF/IF 3500-4000/6020 kHz

• 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-5 MKII - National Company; Cambridge &

• Shape
• Tablemodel without push buttons, Mantel/Midget/Compact up to 14

• Dimensions (WHD)
• 350 x 165 x 310 mm / 13.8 x 6.5 x 12.2 inch

• Notes

• AM, SSB, CW transceiver on 80, 40, 20, 15 and 10 meter amateur bands. The 10 meter band is on four ranges. First IF is 3500 kHz to 4000 kHz, the second is 6020 kHz. Transistorized VFO with 2N706 and 2N2118 transistors. The carrier balance ajustment in NCX-5 is replaced in NCX-5 MKII by the carrier insertion ajustment. In the NCX-5 MKII, V10 and C7 are on module V501 near the VFO cover. An AC power supply, NCX-A, is on a separate unit which includes the speaker. DC/DC power supply available for mobile operation.

• Net weight (2.2 lb = 1 kg)
• 10.4 kg / 22 lb 14.5 oz (22.907 lb)

• Author
• Model page created by Georges Werts. 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)