The orange light in the previous diagram provides one example of
a wavelength calculation. As another example, what is the wavelength
used by the FM station KPFK in Los Angeles, which has a frequency
of 90.7 megahertz (MHz), or megacycles (Mc) per second?

Solution.

= 90.7 Mc or
90.7 x 10
cycles

= c /
= 3.00
x 10
cm / 90.7
x 10
cycles
= 330
cm cycle

KPFK has a broadcast wavelength of 330 cm or 3.3 meters.