• Year
  • 1940
  • Category
  • Service- or Lab Equipment
  • Radiomuseum.org ID
  • 303816
    • Brand: Micromesh tubes

 Technical Specifications

  • Number of Tubes
  • 1
  • Valves / Tubes
  • HL2
  • Wave bands
  • Wave Bands given in the notes.
  • Power type and voltage
  • Dry Batteries / 1.5 Volt
  • Material
  • Wooden case
  • from Radiomuseum.org
  • Model: Universal Wavemeter R502 - Standard Telephones and Cables
  • Dimensions (WHD)
  • 255 x 345 x 365 mm / 10 x 13.6 x 14.4 inch
  • Notes
  • Wide range (100 kHz - 48 MHz or 87 MHz) absorption wavemeter supplied in a wooden carrying case with 9 plug-in coils, calibration charts, spare HL2 valve and 1.5v battery. Accuracy +-0.5%.

    The valve is used as a diode, the grid and anode being connected.

    Slow motion dial with vernier scale. Resonance indicated by 250 microamp meter. Battery test switch.

    UK Admiralty Pattern 53059, Type G92.

    In some units the A coil, covering 100-200 kHz, was substituted by an AA coil, covering 40-87 MHz.

  • Net weight (2.2 lb = 1 kg)
  • 16 lb (16 lb 0 oz) / 7.264 kg
  • Author
  • Model page created by Bruce Taylor. See "Data change" for further contributors.

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