General Class: 2019–2023
Help keep WaveTalkers FREE by supporting us using Buy Me A Coffee!

G3C04:

What does the term "critical angle" mean, as used in radio wave propagation?

  1. The long path azimuth of a distant station
  2. The short path azimuth of a distant station
  3. The lowest takeoff angle that will return a radio wave to Earth under specific ionospheric conditions
  4. The highest takeoff angle that will return a radio wave to Earth under specific ionospheric conditions
G3C01 G3C02 G3C03 G3C04 G3C05 G3C06 G3C07 G3C08 G3C09 G3C10 G3C11