• Country
• United States of America (USA)

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

• Year
• 1947–1952

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

• Radiomuseum.org ID
• 49588

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

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

• Number of Tubes
• 15

• Valves / Tubes
• 6SG7 6SG7 6SA7 6J5 6SG7 6SG7 6H6 6SJ7 6AC7 6H6 6SJ7 6J5 6V6GT 6V6GT 5U4G VR150

• Main principle
• Superhet with RF-stage; ZF/IF 455 kHz

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

• Power type and voltage
• Alternating Current supply (AC) / 110-120 / 220-240 Volt

• Loudspeaker
• - For headphones or amp.

• Power out
• 8 W (unknown quality)

• Material
• Metal case

• from Radiomuseum.org
• Model: NC-183 - National Company; Cambridge &

• Shape
• Tablemodel, with any shape - general.

• Dimensions (WHD)
• 501 x 260 x 425 mm / 19.7 x 10.2 x 16.7 inch

• Notes
• coverage 540 - 31 and 48-56 MHz, bandspread in ham bands, AM, CW (BFO);
  optional NC-183TS external speaker, NFM-83-50 narrow band FM-adaptor, SOJ-3 select-o-ject

• Net weight (2.2 lb = 1 kg)
• 29.4 kg / 64 lb 12.1 oz (64.758 lb)

• Price in first year of sale
• 269.00 $

• External source of data
• Ernst Erb

• Source of data
• Communications Receivers

• Circuit diagram reference
• Rider's Perpetual, Volume 19 = 1949 and before

• Mentioned in
• Shortwave Receivers - Past & Present (3rd ed.)

• 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)