• Year
  • 1922 ?
  • Category
  • Morse-Equipment & TTY, RTTY, TDD etc.
  • Radiomuseum.org ID
  • 340436

 Technical Specifications

  • Wave bands
  • - without
  • Power type and voltage
  • Dry Batteries
  • Loudspeaker
  • - only for Earphone!
  • Material
  • Various materials
  • from Radiomuseum.org
  • Model: Natrometer Model C - Natrometer Corporation;
  • Shape
  • Tablemodel, with any shape - general.
  • Dimensions (WHD)
  • 8.75 x 5.5 x 6.5 inch / 222 x 140 x 165 mm
  • Notes
  • A Morse Code training instrument using a spring drive motor. Made for the National Radio Institute (NRI) and used to train both amateur and commercial wireless telegraph operators.

  • Net weight (2.2 lb = 1 kg)
  • 2 lb 5 oz (2.312 lb) / 1.050 kg
  • Price in first year of sale
  • 20.00 USD
  • Mentioned in
  • Radio (magazine) (Natrometer ad in February, 1922 issue (page 5))
  • Literature/Schematics (1)
  • Patent (US patent No. 1,394,768 Patented Oct. 25, 1921)
  Description of Natrometer models A, B, and C. 1413 KB
  • Documents regarding this model
  • Author
  • Model page created by Gary Berg. See "Data change" for further contributors.

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The model Natrometer is part of the collections of the following members.

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