Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Delphi XM Signal Repeater Works Well

I've located this repeater in my third-story attic and attached it to the Antenna mounted on my roof using coaxial cable. The repeater sends the satellite signal throughout the house. This has worked very well. The repeater's receiver, which is attached with a short cable to my XM satellite radio now picks up the signal anywhere in the house. I no longer need to attach a satellite antenna located in a south window directly to the radio. It would be helpful if there were also a receiver in the form of a headphone to make the radio even more portable in the house.