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Generally, the higher in frequency you go above VHF, the more power you need and the easier it is to have interference from buildings or other structures. This is one reason Verizon cell phones have generally better coverage (with their 800 MHz signals) than Sprint/AT&T/T-Mobile (with their 1900 MHz signals). The differences can be easily seen on the Web sites of the cell-phone companies, or even those Verizon-versus-AT&T commercials and ads, which are accurate (though only referring to their respective high-speed data coverage).
Ironically in a VERY bad way, probably the one biggest reason "mobile broadband" providers want more space is because they all want to push... yes... TV-type programming over their networks! The one big difference, of course, is that users would have to PAY subscription fees for that programming. Unfortunately, a higher and higher percentage of now-adults have grown up with cable and/or satellite TV as their only experiences, so they are essentially unaware of the idea of completely free TV signals.
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Chris
Quote from another forum: "(Antique TV collecting) always seemed to me to be a fringe hobby that only weirdos did."
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