Gizmodo - "Hi, I'd like a large barbecue chicken pizza with extra—*fzzt* oni
asjkhwakj no *kssshh*" CALL FAILED. What just happened here? With all of today's modern wireless technology, why do cellphones still pull this crap?
For all the miraculous things we're able to do with phones now—tell 600 Twitter followers unpleasantly intimate details of our lives, for instance—it's amazing what's still missing: Universally excellent reception. Without enough bars, your phone becomes a shiny, useless brick. We've already explained how cell towers basically work. Now, we're gonna talk about how the invisible fairies who carry your voice and data between the cell site and your Moto RAZR actually do their jobs.
Okay, there are no fairies. Everything is actually carried on radio waves—ultra high frequency (UHF, as in the Weird Al movie) radio waves, to be precise. UHF refers to any frequencies between 300MHz and 3GHz, so Wi-Fi, your mom's cordless phone, your lame Bluetooth headset and other stuff all run on the broad UHF band. The thing about radio waves is that they're pretty easy to screw with, and UHF is no exception, despite the fact it has "ultra" in the name. Maybe if we had like, Chuck Norris Frequency, things would be different.
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