SignalPrep
Basic Qualification · B-002 Operating and procedures · B-002-009-004

Avec une antenne directionnelle, combien de degrés séparent généralement le trajet long ("long path") du trajet court ("short path") vers une station distante?

  1. A45 degrés
  2. B90 degrés
  3. C270 degrés
  4. D180 degrés

Correct answer: D — 180 degrés. Question tirée de la banque officielle d'ISDE.

Why

Long-path and short-path are opposite directions on a circle, so pointing a directional antenna toward the long path means aiming it exactly 180 degrees away from the short-path heading. The full explanation — and one for every question — is in Pro.

Practise this section

Operating and procedures is section B-002 of the Basic exam: How to operate: calling, phonetics, Q-signals, repeaters, nets, emergency traffic, and the courtesies that keep a band usable.

Drill B-002 — free, no account

This question in English · All B-002 questions