7 BandStudy summaryDisadvantagesAdvantages 5 GHz bands May be able to support UAS control links (BLOS) Sharing difficulties (MLS) No satellite on orbit Only ~5 MHz per spot beam and1 satellite per region greatly constrains spectrum Operate in ARNS allocation UA operates with omni antenna 12/14 GHz bands -- commercial satcom Support UAS control Links Meet the UAS system link availability Operate in FSS allocation, not AMSRS 100s of satellites on orbit Global coverage Used for decades to provide BLOS service to UAS > 500 MHz in each direction 13/15 GHz bands Cant share with the existing and planned systems in these bands Unacceptable interference to passive sensors in adjacent bands Spectrum limitation 22/23 GHz bands Cant share with the existing and planned systems in these bands Unacceptable interference to passive sensors in adjacent bands Spectrum limitation 20/30 GHz bands – commercial satcom Support UAS control links Meet the UAS system link availability Allocated to the FSS and, in some bands, the MSS.
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