Quote Originally Posted by Tavrobel View Post
The frequency is not the period. It's its reciprocal. As in, how often it occurs in a given set, whereas period gives you the time needed to repeat itself.

Example, sin has a period of 2pi. Its frequency would be 1/(2pi). Amplitude stretches the graph up and down; it is usually the coefficient outside of the function. In the equation a*sin(bx) + c, a is your amplitude value, b affects the period, and c shifts it along the y axis.
Ah I see. Would the period of a radio wave always be the same since no modulation notes a change in the period, only in the frequency?