Seventy-five hearing aid

Microtone Co.; St. Paul, MN

  • Year
  • 1950 ??
  • Category
  • Medical Technology
  • Radiomuseum.org ID
  • 354735

 Technical Specifications

  • Number of Tubes
  • 3
  • Main principle
  • Audio-Amplification; 3 AF stage(s)
  • Wave bands
  • - without
  • Details
  • Hearing aid
  • Power type and voltage
  • Dry Batteries
  • Loudspeaker
  • - only for Earphone!
  • Material
  • Metal case
  • from Radiomuseum.org
  • Model: Seventy-five hearing aid - Microtone Co.; St. Paul, MN
  • Shape
  • Very small Portable or Pocket-Set (Handheld) < 8 inch.
  • Dimensions (WHD)
  • 53 x 80 x 20 mm / 2.1 x 3.1 x 0.8 inch
  • Net weight (2.2 lb = 1 kg)
  • 0.1 kg / 0 lb 3.5 oz (0.22 lb)
  • Price in first year of sale
  • 75.00 USD
  • Author
  • Model page created by Wolfgang Gebert. See "Data change" for further contributors.

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