I would bet that its a harmonic... even cable boxes are messy and put out junk in that range so if you are watching scola or something of the sort you might find that junk in there... there are several bands that overlap into cable's domain of CCTV... just another consideration if they didnt mention it on the other thread
Well the satellites belong the US government but what you heard were South American pirates who have been bootlegging on these DoD birds for years. You will hear lots of Portuguese and Spanish which will be these guys. Most other traffic is encrypted these days. If you are extremely patient though, once in a blue moon you will catch the occasional transmission in the clear.