everybody knows if the Satellite Radio works in Latin America??

I've used an XM Inno as far south as Cabo so far but needed the plug-in external antenna pointed in the correct direction (just about straignt up and east I think, lucky I threw it in my bag at the last minute). Funny thing is that the resort played Sirius in one of their resturants but I don't know if they were streaming it of off a PC or using an external antenna.