Question
What antenna polarization is normally used for long-distance CW and SSB contacts on the VHF and UHF bands?
Answer Options
- A) Right-hand circular
- B) Left-hand circular
- C) Horizontal
- D) Vertical
Correct Answer: C
Explanation
Antenna polarization refers to the orientation of the electric field of the radio wave relative to the Earth’s surface. For local, FM repeater communications on VHF/UHF, vertical polarization is typically used because it matches mobile antennas and is less susceptible to signal rotation from local reflections.
However, for long-distance, weak-signal work using CW and SSB on VHF and UHF bands, horizontal polarization is preferred. This is because horizontally polarized signals suffer less signal absorption by nearby ground and vegetation. This minimal loss is critical for maximizing the distance achieved in weak-signal terrestrial modes.
This topic was automatically created to facilitate community discussion about this exam question. Feel free to share study tips, memory tricks, or additional explanations!