In order to effectively radiate a radio signal, an antenna must be at least one-half the wavelength of transmission in length, i.e., minimum antenna height = 1/2(λ). WITY operates at a frequency of 980.0 kHz. What is the minimum height (m) of the antenna that WITY (nostalgia radio) must have?

Question

asw19b · Answer

$$\lambda = c / f$$ = 300000 km /980 kHz = 306.12... m
==> minimum height is approximately 153 m, 
with 	light velocity (c) is approximately 300000 km/s