G3A05 : What is the solar flux index?
A
A measure of the highest frequency that is useful for ionospheric propagation between two points on Earth
B
A count of sunspots that is adjusted for solar emissions
C
Another name for the American sunspot number
D
A measure of solar radiation with a wavelength of 10.7 centimeters
Correct Answer: A measure of solar radiation with a wavelength of 10.7 centimeters