At what point in the solar cycle does the 20-meter band usually support worldwide propagation during daylight hours?
At the summer solstice
Only at the maximum point
Only at the minimum point
At any point✓پاسخ درست
توضیح
At 14 MHz the 20 meter band normally stays below the daytime F2 MUF even when solar activity is low, so it supports long-distance daylight paths at any point in the cycle. Solar maximum improves it and opens higher bands, but 20 meters does not depend on maximum conditions to work.