• Year
  • 1951
  • Category
  • Amateur-Receiver (amateur bands, may include broadcast bands)
  • Radiomuseum.org ID
  • 87740
    • alternative name: National Toy Co.
    • Brand: Thrillbox

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 Technical Specifications

  • Number of Tubes
  • 8
  • 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) / 105-130 Volt
  • Loudspeaker
  • Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 5 inch = 12.7 cm
  • Power out
  • 1.5 W (unknown quality)
  • Material
  • Metal case
  • from Radiomuseum.org
  • Model: NC-57B - National Company; Cambridge &
  • Shape
  • Tablemodel, with any shape - general.
  • Dimensions (WHD)
  • 419 x 298 x 222 mm / 16.5 x 11.7 x 8.7 inch
  • Notes
  • coverage 540 - 55000 kHz, AM, CM (BFO);
    slightly different tube layout;
    optional external S-Meter SM-57
  • Net weight (2.2 lb = 1 kg)
  • 14 kg / 30 lb 13.4 oz (30.837 lb)
  • Price in first year of sale
  • 99.00 $
  • Circuit diagram reference
  • Rider's Perpetual, Volume 18 = 1949 and before
  • Author
  • Model page created by Martin Bösch. See "Data change" for further contributors.

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