Basic Qualification · B-006 Feedlines and antenna systems · B-006-005-009
Que mesure un ROS-mètre pour déterminer le ROS?
- ALe courant en mode commun
- BLes tensions incidente et réfléchie
- CL'énergie RF rayonnée
- DLa température du conducteur
Correct answer: B — Les tensions incidente et réfléchie. Question tirée de la banque officielle d'ISDE.
Why
An SWR meter works by sampling the radio signal travelling toward the antenna and the portion bouncing back, measuring both the forward and reflected voltage to calculate the Standing Wave Ratio. 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