• Country
• United States of America (USA)

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

• Year
• 1954–1956

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

• Radiomuseum.org ID
• 88096

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

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

• Number of Tubes
• 9

• Valves / Tubes
• 6BA6 6BE6 6C4 6BD6 6BD6 6AL5 12AX7 6AQ5 5Y3GT

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

• Tuned circuits
• 10 AM circuit(s)

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

• Power type and voltage
• Alternating Current supply (AC) / 105-130 Volt

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

• Power out
• 1.5 W (unknown quality)

• Material
• Metal case

• from Radiomuseum.org
• Model: NC-98 - National Company; Cambridge &

• Shape
• Tablemodel, with any shape - general.

• Dimensions (WHD)
• 16.5 x 8.75 x 10.5 inch / 419 x 222 x 267 mm

• Notes

• Coverage 540 kHz - 40 MHz, bandspread in 80 - 10 m ham bands; AM, CW (BFO);
  S-meter; optional narrow band FM-adaptor NFM-83-50 to plug in in accessory socket.

  Similar to National World Master NC-88 without internal speaker, but with added accessory socket, S-meter, and most important, the crystal filter.   

  The NC-98 was reviewed in the August 1954 issue of QST.  The review notes that the addition of the crystal filter and the S-meter made it a true communications receiver as compared to an all-wave broadcast receiver to which a BFO had been added stating, "Using the amateur understanding of what a communication receiver is, the National NC-98 meets these requirements, since it is the NC-88 with a crystal filter and an S-meter."

  As with all receivers with a crystal filter, the IF must be aligned to the crystal filter frequency.

  Model NC-98TS was a 6 inch speaker in a matching cabinet, priced at $11.

• Net weight (2.2 lb = 1 kg)
• 13.6 kg / 29 lb 15.3 oz (29.956 lb)

• Price in first year of sale
• 149.95 USD

• Source of data
• Communications Receivers

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

• Literature/Schematics (1)
• Photofact Folder, Howard W. SAMS (Set 264, Folder 14, dated 1-55)

• Literature/Schematics (2)
• Allied Radio Catalog (Knight) (1955 catalog p188)

• Literature/Schematics (3)
• National's Mid-priced Crystal-filter Radio - the NC-98, RPost, The Spectrum Monitor, 1-2026, p82-86

• Author
• Model page created by Martin Bösch. See "Data change" for further contributors.

• Other Models

• Here you find 446 models, 285 with images and 190 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from National Company; Cambridge & Malden (MA)