Assertion: antenna's frequency | /r/CapableOf | rise with greater sunlight
Facets:
Source sentences:
text: The usable frequencies change from day to night, because sunlight causes the lowest layer of the ionosphere, called the D layer, to increase, causing attenuation of low frequencies during the day  while the maximum usable frequency (MUF) which is the critical frequency of the F layer rises with greater sunlight.