• Country
• United States of America (USA)

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

• Year
• 1931/1932

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

• Radiomuseum.org ID
• 49600

• • 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
• 35 24 27 35 80

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

• Wave bands
• Short Wave (SW only)

• Details
• Converter

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

• Loudspeaker
• - For headphones or amp.

• Material
• Wooden case

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

• Shape
• Tablemodel, with any shape - general.

• Notes

• The National NC-5 is a shortwave converter, covering 16 to 185 meters (1.6 to 18 MHz), with four sets of plug-in coils.

  Lafayette sold the National NC-5 as metal cabinet, unwired; NC5W as metal cabinet, wired - and NC5-S as Mahagony cabinet, wired. See picture with text and/or see details or summaries about the mentioned catalog for season 1931/32.

• Price in first year of sale
• 75.00 $

• External source of data
• Ernst Erb

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

• Literature/Schematics (1)
• Lafayette Radio Catalog (Lafayette 10th Anniversary catalog 1932, page 34.)

• Literature/Schematics (2)
• Short Wave Craft Dec31/Jan32 pages 256-7 and 294-5

• 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)