Basic Qualification · B-006 Feedlines and antenna systems · B-006-005-011
What is the effect of line loss on the SWR reading at the station?
- A It decreases the SWR, because reflected energy is attenuated
- B It decreases the SWR, because less power reaches the antenna
- C It has no effect, because SWR compares voltages
- D It has no effect, because forward and reflected power are both affected
Correct answer: A — It decreases the SWR, because reflected energy is attenuated. From the official ISED question bank, verified word for word.
Why
Line loss in a feedline acts like a sponge that soaks up signal energy as it travels. The full explanation — and one for every question — is in Pro.
Practise this section
Getting the signal out: antennas, feedlines, SWR, baluns, matching, and why antenna length depends on frequency.