One of the early complaints about satellite radio in general was that people were paying for the service but they could only get it in their cars, making the investment a questionable one. Since Sirius and its rival XM Satellite Radio [XMSR] have come to market, there has been a push to develop a product that can be brought into the home. XACT Communications unveiled its Power Pod portable battery pack, a palm-sized battery pack designed to give portability to Sirius Satellite Radio‘s [SIRI] Stream/jockey plug-and-play receiver. This kind of product gives Sirius a key ingredient as it continues its expansion.