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Frage 181

What is a possible effect of a resonant ground connection?

  1. Overheating of ground straps
  2. Corrosion of the ground rod
  3. High RF voltages on the enclosures of station equipmentRichtige Antwort
  4. A ground loop

Erklärung

A ground conductor close to an odd multiple of a quarter wavelength acts as a stub that transforms the low impedance at the earth end into a high impedance at the equipment end. Current flowing into that high impedance develops high RF voltage on the equipment enclosures.

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