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?
- A45 degrés
- B90 degrés
- C270 degrés
- 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