SignalPrep
Basic Qualification · B-006 Feedlines and antenna systems · B-006-003-009

Quel type de conducteur extérieur offre le meilleur blindage sur du câble coaxial?

  1. AUne gaine tressée simple
  2. BUne double gaine tressée
  3. CUn blindage rigide
  4. DUn feuillard d'aluminium

Correct answer: C — Un blindage rigide. Question tirée de la banque officielle d'ISDE.

Why

A solid shield acts like a continuous metal tube around the inner wire, leaving no gaps for radio signals to leak in or out. 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

This question in English · All B-006 questions