ScienceIEEE Spectrumabout 3 hours ago
VHF Propagation: What Every RF Engineer Should Know
1 min read
VHF frequencies (30, 300 MHz) support broadcasting, aviation, and defense radar. Propagation extends beyond line of sight via tropospheric ducts (over 1,500 km), sporadic E events (up to 2,500 km), meteor ionization trails, and Earth-Moon-Earth communication. The white paper covers physics and operational significance of each mode.
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