The U.S. Navy has issued a final request for proposals to build an Ultra-High Frequency (UHF) communications payload that will launch aboard a commercial communications satellite around 2012 to mitigate a potential gap in coverage. Meanwhile, the Australian military is pursuing a similar procurement, according to industry sources. The Navy is concerned its current UHF satellite communications capabilities - primarily the UHF Follow-On constellation - are deteriorating and may not provide adequate service until the next-generation Mobile User Objective System constellation is operational.
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