How Cell Service Works [video]

There are some good bits to this video but it instantly loses credibility when it gives a single frequency right down to a cycle to the 'color' cyan. The announcer then proceeds to discuss the wavelength (singular) of the 'color' purple when he should have said violet. When discussing purple the screen flashes up with a very reddy magenta which the video uses as an example.

This is all the more horrifying given that the principal part of his talk is about RF carriers and modulation systems on said carriers for cell phones.

I know things like this happen but one doesn't expect to see such a blatant example on HN.