[amsat-bb] Re: Malaysian airliner puzzle

Howie DeFelice howied231 at hotmail.com
Wed Mar 26 12:28:46 PDT 2014

All Inmarsat satellites though the F-3 series have been in inclined orbits since beginning of life. This gives them extended on orbit lifetime. The beamwidth of the Inmarsat L band ground terminals is large enough that tracking isn't required. The gateway stations operate at C band with large antennas that require continuous step tracking. I don't know for sure if the F-4 satellites are inclined or not. This was a very clever use of available data for an unintended purpose.  		 	   		  

More information about the AMSAT-BB mailing list