• Country
• United States of America (USA)

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

• Year
• 1932 ?

• Category
• Pre-stage (adaptor for SW/FM/VHF/UHF incl. built-in), Frequency converter

• Radiomuseum.org ID
• 49601

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

• Number of Tubes
• 5

• Valves / Tubes
• 35 24 27 35 80

• Main principle
• RF Converter/Adapter (not voltage converter); ZF/IF 575 kHz

• Wave bands
• Short Wave (SW only)

• Power type and voltage
• Alternating Current supply (AC) / 110/220 Volt

• Loudspeaker
• - For headphones or amp.

• Material
• Wooden case

• from Radiomuseum.org
• Model: NC-5M - National Company; Cambridge &

• Notes
• converter, tunes shortwaves 16 - 185 m (1,6 - 18 MHz) and converts into broadcasting band
  similar to NC5 but deluxe version with mahagoni case

• Price in first year of sale
• 85.00 $

• External source of data
• Ernst Erb

• Source of data
• Radio Collector`s Guide 1921-1932

• 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)