Basic Qualification · B-006 Feedlines and antenna systems · B-006-013-011
Quelle est la longueur approximative d'une antenne à boucle delta?
- ADeux longueurs d'onde
- BUne demi-longueur d'onde
- CUne longueur d'onde
- DUn quart de longueur d'onde
Correct answer: C — Une longueur d'onde. Question tirée de la banque officielle d'ISDE.
Why
A delta loop antenna is a full loop of wire shaped like a triangle, and its total wire length must equal one complete wavelength to resonate properly. 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