The FCC today announced the winners of Auction 107 for radio frequency licenses in the coveted "C-Band". Verizon spent $45.5 billion, well over half the $81.1 billion total spent in the whole auction. All major US carriers spent large amounts, with AT&T spending $23.4 billion, T-Mobile spending $9.3 billion, and US Cellular spending $1.3 billion. Auction 107 is for radio frequencies spanning 3.7 to 3.98 GHz. This band is unusually large at 280 MHz wide, giving it valuable high capacity for many users and/or fast data speeds. Spectrum in these "mid-band" frequencies is also valuable because it's ideal for building 5G networks that offer a good balance of fast data speeds and broad coverage. Most current 5G networks in the US offer only fast speeds or broad coverage, an issue that is particularly acute for Verizon at the moment. Auction 107 is likely to be the largest and most important of several C-band auctions the FCC is holding. Auction 105 was the first, though it raised only $4.6 billion. The next will be Auction 110, for 3.45 –-3.55 GHz. The FCC finalized its proposed rules for that auction earlier this week.


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