EASA NAV(A)basic
88. VHF radio waves, such as VOR signals, travel as…
Answer
Space wave (quasi-optical)
Explanation
VHF propagation is predominantly line-of-sight, or quasi-optical, between transmitter and receiver. **Key takeaway:** VHF range is strongly affected by antenna height and terrain. **Glossary:** Space wave: direct propagation through the atmosphere.
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