Detailed view of the Ku band frequency usage in the US.
United States frequency allocations between 7.9GHz to 12.2GHz However the X band frequency allocations runs from 8GHz to 12GHz Note Radio-Location [from the chart] would imply RADAR usage.  7.9GHz to 12.2GHz Frequency Allocation in the United States Note that although the X Band starts at 8GHz the frequency allocation chart starts at 7.9GHz and runs to 8.025GHz for the beginning of the X Band.  Red, Government exclusive. Black, Shared Government & Non-Government. Green, Non-Government exclusive Colors used within the chart mean other things, however; in most cases the chart indicates the usage. Red = Fixed, Dark Purple = Mobile Satellite, Light Purple = Fixed Satellite, Dark Yellow = Radio-location Satellite, Green = Maritime Radio-navigation and so on. So the frequency range between 9.5GHz and 10.0GHz is used only by the US government for either; Satellite Radio-location [Dark Yellow] or Maritime Radio-navigation [Green].
Sea Based X-Band Radar Platform A Sea Based X-Band radar [SBX] is shown above. The SBX radar is part of the Ballistic Missile Defense System [US Missile Defense Agency] Radar Topics;
 Land Based Mobile Radar X-Band AN/MPQ-64 Sentinel  Also see related topics Editor note: Although many people continue to use the "letter"-Band nomenclature [X-Band], most of the government tends to indicate the usage is obsolete. In fact the US Government, at least parts, indicate that using terms like X-Band is legally obscure. |