NC-TV7M early

National Company; Cambridge & Malden (MA)

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  • Year
  • 1949
  • Category
  • Television Receiver (TV) or Monitor
  • Radiomuseum.org ID
  • 123053
    • alternative name: National Toy Co.
    • Brand: Thrillbox

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

 Technical Specifications

  • Number of Tubes
  • 22
  • Main principle
  • Superheterodyne (common); ZF/IF 37300 kHz
  • Wave bands
  • VHF incl. FM and/or UHF (see notes for details)
  • Power type and voltage
  • Alternating Current supply (AC) / 105-115; 115-130 / 117 Volt
  • Loudspeaker
  • 2 Loudspeakers
  • Material
  • Metal case
  • from Radiomuseum.org
  • Model: NC-TV7M [early] - National Company; Cambridge &
  • Shape
  • Tablemodel, low profile (big size).
  • Dimensions (WHD)
  • 19.75 x 11.5 x 18 inch / 502 x 292 x 457 mm
  • Notes

  • 7" round CRT, tuning range channels 1 through 13 (SAMS: 2 though 13). 2 oval speakers 4" x 6". Metal cabinet.

    Some models have been fitted with an auto-transformer to allow operating at lower mains voltages. These can be identified by an additional transformer, and two fuse positions for 105 - 115 V and for 115 - 130V.

    Later production models combine ratio detector and AF amp with 6T8 instead of 6AL5 and 6AT6; see model NC-TV7M [late]. Late models also have only one fuse in place of two.

  • Price in first year of sale
  • 189.00 $
  • Literature/Schematics (1)
  • Rider's TV; 2-1, 3-1 and 3-3
  • Author
  • Model page created by a member from A. See "Data change" for further contributors.

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