We have factory installed Sirius radios in a 2010 Toyota Highlander and a 2006 Mercedes E320. Until Fall 2013 we had these vehicles in Las Vegas, NV and never experienced any signal loss or dead zones. Now we live in Plymouth, MA and we are CONSTANTLY dealing with dead zones and signal loss. And the signal loss occurs in the same parts of town (and actually in many places in SE MA) with both cars. This tells me it isn't a hardware problem, but a signal strength issue.

Am I correct? Are other subscribers in SE MA having the same problems? Any suggestions?