For example, MSS/ATC relocation obligations to FS in the 2180-2200 MHz band will sunset in December 2013 (ten years after the mandatory negotiation period began for MSS/ATC operators).
For the 2110-2150 MHz , 2160-2175 MHz and 2175-2180 MHz bands, the sunsets occur``ten years after the first ET license is issued in the respective band . ''