FCC Approves Iridium Next Constellation Plans
Iridium received an FCC green light for its Next constellation, with the International Bureau and Office of Engineering and Technology Monday approving the company's 2013 application to modify its nongeostationary mobile satellite service license to allow the new constellation. In…
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the order issued Monday, the FCC said the new constellation will operate in the same orbital parameters and transmit on the same frequency bands, and will be equipped to track ships and aircraft through an automatic dependent surveillance broadcast receiver and a receiver for maritime automatic identification system messages. Inmarsat, SES and ViaSat voiced concern about Iridium sharing the 29.25-29.3 GHz band with co-primary geostationary fixed satellite service operations, but the FCC said sharing demonstrations weren't necessary since Next will operate with the same feeder-link stations authorized for its current satellites. The Committee on Radio Astronomy Frequencies and the National Radio Astronomy Observatory objected to the protection levels and coordination plan Iridium submitted for its use of 1617.775-1626.5 MHz, but Iridium came up "with good proposal and a good way forward," one FCC official told us Tuesday. The company now plans to shift traffic from satellites in view of radio astronomy service sites to adjacent satellites -- which should protect radio astronomy observations from interference, the FCC said in its order. Iridium said last month the first Next launch will be Sept. 19, with the entire constellation to be in orbit by the end of 2017 (see 1607280006).