Delphi announced today that it is expanding its satellite radio product line-up with the introduction of the Delphi XM Signal Repeater the first system that wirelessly rebroadcasts the XM satellite signal throughout most homes and smaller offices.

The repeater system includes both a transmitter and receive module. The transmitter down-converts the XM signal through the XM home or audio system antenna and rebroadcasts it through interior walls and floors at an expected distance between 75 and 100 feet.

While in range, one or more receive modules can acquire and up-convert the signal back to the natural XM frequency (passing it through just like a regular XM antenna). The end result is continued XM programming wirelessly throughout an indoor environment.

Great idea, it's about time.

UPDATE: XM411 got some great pictures of this device.