Ever wonder where that 4G signal comes from? No? Well, here's a video.

4G, like all wireless technologies before it, is more or less a big magical mystery to most consumers. All they know — and all they care to know, really — is that 3G was fast, and 4G is faster.

For that little niche who does care to know more, however, Sprint’s taken it upon themselves to mount up on a rooftop, camera in hand, and show you all the workings. To make the whole thing considerably more fun, I highly recommend turning on Youtube’s automatic captioning for gems like “there’s usually in tennis you need” and “We have some cell sites are pointing down missile sites all over the place”. Video is after the jump.

[youtube http://www.youtube.com/watch?v=KRfCM1BbmBM&fs=1&hl=en_US]