QuestenaUn entraînement qui indique quoi revoir ensuite
Question 152

What is the effect of chordal-hop propagation?

  1. The signal experiences less loss compared to multi-hop propagation, which uses Earth as a reflectorBonne réponse
  2. The MUF for chordal-hop propagation is much lower than for normal skip propagation
  3. Atmospheric noise is reduced in the direction of chordal-hop propagation
  4. Signals travel faster along ionospheric chords

Explication

In a chordal hop the signal is refracted from one ionospheric region directly to another without touching the ground, so it escapes the substantial scattering and absorption of a ground reflection and arrives stronger than over an equivalent multi-hop path. The MUF is not lowered, atmospheric noise is unaffected, and radio waves do not travel faster along such a route.

Continuer avec ce test

Commencer l’entraînement
Question 152: What is the effect of chordal-hop propagation? · FCC Amateur Extra Class (Element 4) · Questena