Tuning Units Type BD-1 and BD-2 1925

National Company; Cambridge & Malden (MA)

  • Year
  • 1925
  • Category
  • Radio module pre 1926 (not a part, not a key)
  • Radiomuseum.org ID
  • 226032
    • alternative name: National Toy Co.
    • Brand: Thrillbox

 Technical Specifications

  • Wave bands
  • Broadcast only (MW).
  • Power type and voltage
  • No Power needed
  • Loudspeaker
  • - - No sound reproduction output.
  • Material
  • Various materials
  • from Radiomuseum.org
  • Model: Tuning Units Type BD-1 and BD-2 [1925] - National Company; Cambridge &
  • Notes
  • Tuning Units Type BD-1 and BD-2. Comprises the National condenser and the Browning-Drake transformer.

  • Price in first year of sale
  • 22.00 USD
  • Mentioned in
  • Radio Broadcast, Dec. 1925, p. 239

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