• Year
  • 1965 ?
  • Category
  • Service- or Lab Equipment
  • Radiomuseum.org ID
  • 328470
    • Brand: Micromesh tubes

 Technical Specifications

  • Number of Transistors
  • -1
  • Semiconductors
  • Wave bands
  • - without
  • Power type and voltage
  • Line / Batteries (any type)
  • Loudspeaker
  • - - No sound reproduction output.
  • from Radiomuseum.org
  • Model: Millivoltmeter 74251 - Standard Telephones and Cables
  • Notes
  • High impedance portable millivoltmeter specially for telecommunications use. It operates throughout the frequency range 20 Hz to 20 MHz, with 10 ranges:  from 0 - 1 mV to 0 - 30 V. Input impedance more than 100 kΩ.
    Two versions: 'A' with self-contained batteries; 'B' with self-contained batteries or from AC mains.
    The meter  has two voltage scales and a decibel scale. It can also check the condition of the batteries.

  • Mentioned in
  • -- Original-techn. papers. (Electronic Engineering, volume 37 year 1965)
  • Author
  • Model page created by Pier Antonio Aluffi. See "Data change" for further contributors.

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