Advanced Qualification · A-007 Feedlines and matching · A-007-005-008
A helical-beam antenna with right-hand polarization will best receive signals with:
- A horizontal polarization
- B right-hand polarization
- C left-hand polarization
- D vertical polarization only
Correct answer: B — right-hand polarization. From the official ISED question bank, verified word for word.
Why
A helical-beam antenna with right-hand polarization works best when the incoming radio wave spins in the same direction, matching the antenna's own rotation. The full explanation — and one for every question — is in Pro.
Practise this section
Feedlines and matching at the advanced level: transmission line theory, impedance transformation, stubs and matching networks.