Wavemeter - Modulation Indicator 380 (77)

Simpson Electric Co.; Chicago, IL - Lac du Flambeau, WI

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  • Year
  • 1951
  • Category
  • Service- or Lab Equipment
  • Radiomuseum.org ID
  • 96993

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

 Technical Specifications

  • Number of Transistors
  • Semiconductors
  • 1N34
  • Main principle
  • Crystal or Solid State Detector
  • Wave bands
  • Short Wave (SW only)
  • Power type and voltage
  • No Power needed
  • Loudspeaker
  • - only for Earphone!
  • Material
  • Metal case
  • from Radiomuseum.org
  • Model: Wavemeter - Modulation Indicator 380 - Simpson Electric Co.; Chicago,
  • Shape
  • Very small Portable or Pocket-Set (Handheld) < 8 inch.
  • Dimensions (WHD)
  • 3 x 5.8 x 2.5 inch / 76 x 147 x 64 mm
  • Notes

  • Band-spread wavemeter and 0 - 100 microammeter as resonance indicator. Calibration charts included.

    • separate plug-in coils for 10, 20, 40 and 80 meter bands supplied, coils for other bands available as option.
    • direct-reading Percentage Modulation Indicator with the instrument calibrated at 0 - 110 % modulation
    • designed to function on the 144, 235, 420 megacycle bands without coils but with quarter wave antenna section
    • used as field-strength indicator
    • one copper oxide recitifier, one diode.

    Price in 1951, dealer's net, including 4 coils, 2 ft. antenna.
    Optional leatherette carrying case, same, $8.00

    Marketed in Canada as Model 77.

  • Net weight (2.2 lb = 1 kg)
  • 2 lb (2 lb 0 oz) / 0.908 kg
  • Price in first year of sale
  • 37.85 $
  • Mentioned in
  • -- Original prospect or advert (Catalog 1951)
  • Literature/Schematics (1)
  • 1951 Newark catalog Nº 51
  • Literature/Schematics (2)
  • - - Manufacturers Literature (User Manual)
  • Author
  • Model page created by Vitor Oliveira. See "Data change" for further contributors.

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