While Sprint's tri-band LTE network is far from a secret, the company's going on an all-out marketing offensive promoting the technology, which it's now given a name: Sprint Spark. Capitalizing on the unique capabilities of its newly-purchased Clearwire spectrum, Sprint is set to roll out what will likely be the US's largest LTE network in terms of spectrum usage over the coming years. That's primarily because Sprint's Clearwire acquisition granted it a block of wireless spectrum from 2500-2600MHz, the single largest contiguous frequency lease in use by any mobile data provider in the United States.

Because Sprint controls such a large unimpeded hunk o' spectrum, this will allow it to be the first carrier in the US to outfit its towers with 8x8 radio heads (8 transmitters, 8 receivers), greatly increasing the throughput capacity of the network.

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