Basic Qualification · B-006 Feedlines and antenna systems · B-006-009-005
Une antenne peut fonctionner sur une certaine gamme de fréquences. Cette propriété s'appelle:
- Ale rapport avant/arrière
- Bla largeur de faisceau
- Cl'ouverture de l'antenne ("antenna aperture")
- Dla largeur de bande
Correct answer: D — la largeur de bande. Question tirée de la banque officielle d'ISDE.
Why
Bandwidth is the correct term because it describes the span of frequencies over which an antenna performs well, much like how a radio dial covers a range of stations rather than just one exact spot. The full explanation — and one for every question — is in Pro.
Practise this section
Feedlines and antenna systems is section B-006 of the Basic exam: Getting the signal out: antennas, feedlines, SWR, baluns, matching, and why antenna length depends on frequency.
Drill B-006 — free, no account