850 Mhz makes a really mammoth difference (more than some people may expect) when deployed on top of 1900 Mhz. There are many dead spots that 850 Mhz can reach that 1900 Mhz cannot. For example, where there's only 0 bar reception at 1900 Mhz for 2 level underground parking garages and distant suburb basements, there's often 2-3 bars of 850 Mhz reception from the exact same celltower!
Hundreds of HowardForums members (myself included) noticed a huge improvement when Rogers deployed their 850 Mhz network mostly completely by November 2003, as an overlay on top of their existing 1900 Mhz network.
However in some areas of the states, 850 Mhz versus 1900 Mhz is not very clear. But it is definitely very clear in Southern Ontario.
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