Basic Qualification · B-006 Feedlines and antenna systems · B-006-005-001
What does an SWR reading of 1:1 mean?
- AAn antenna tuner is needed at the transmitter
- BThe best impedance match has been attained
- CReflected power equals forward power
- DAn impedance transformer is needed the antenna feed point
Correct answer: B — The best impedance match has been attained. From the official ISED question bank, verified word for word.
Why
An SWR reading of 1:1 means the radio frequency energy flows from your transmitter into the antenna system without bouncing back, indicating that the electrical resistance of the feedline and antenna are perfectly aligned. 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