document.write('<br>\n\nWINLINK exercise for week 10/05/2026.  Please use the ICS-213 reply to return to K7ACT. <br>\n\n <br>\nWhat does the term \"critical angle\" mean as used in radio wave propagation? <br>\nA. The long path azimuth of a distant station. <br>\nB. The short path azimuth of a distant station <br>\nC. The highest takeoff angle that will return a radio wave to earth under specific ionospheric conditions. <br>\nD. The lowest takeoff angle that will return a radio wave to earth under specific ionospheric conditions. <br>\n\n\n\n<br>\n\n');