Basic Qualification · B-006 Feedlines and antenna systems · B-006-005-006
What instrument is useful in adjusting the physical length of an antenna?
- A Antenna analyzer
- B Multimeter
- C Capacitance meter
- D Frequency meter
Correct answer: A — Antenna analyzer. From the official ISED question bank, verified word for word.
Why
An antenna analyzer measures how well your antenna matches the radio's frequency by showing standing wave ratio, letting you trim the physical length until the signal flows freely. 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.