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AT&T begins cannibalizing its 2G and 3G networks to boost LTE capacity

on November 8, 2013

Gigaom

Verizon(s vz)(s vod), Sprint(s s) and T-Mobile(s tmus) are all turbo-charging their 4G networks, but AT&T won’t be left out of the party. It’s begun building a new LTE network in the PCS band, the swath of digital communications spectrum where carriers have traditionally run their 2G voice and 3G data services.

AT&T PCS LTE screenshotGigaom’s favorite mobile signal spotter Milan Milanovic spied AT&T’s new network in his NYC stomping grounds last week (Milanovic caught the first glimpse of Verizon’s massive new LTE network in NYC as well). As Milanovic’s screenshot shows, AT&T has a 5 MHz-by-5 MHz network running in the 1900 MHz PCS band — band 2 is PCS — which previously contained only HSPA and GSM signals. Commercial devices are already connecting to the network.

AT&T actually revealed its plans to cannibalize — or as they say in industry speak, refarm — portions of its networks for LTE in an

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