I have XM for my car, but the merger between XM and Sirius was just approved, so I'm not sure what that means yet. But, on XM, I don't see local channels. On XM (and I'm sure Sirius does too) it allows you to hear their stations through the Internet, so I can listen to them on my computer. If you have Internet you can get many of your local stations as streaming channels. For instance, you can get the CBS-owned radio stations on your computer through their link: http://www.cbsradio.com/streaming/index.html. And you can get many of the local stations through streaming channels offered through iTunes (free), or Window Media Player (free) or Real Player (free). If you have either XM or Sirius, you can hear them through a radio meant to pick up their reception, and you can carry this radio anywhere to get reception. You don't need to pay for their services for a car.
I've never used a Digital Antenna, so I can't say how much they boost TV reception.
I recently moved far (60+ miles)from my city and I have poor radio reception. I was considering satellite radio for my home. Don't really know a thing about it yet. I have two questions. In addition to all the satellite channels, can you get the local radio stations on them?
Other question has to to with television reception. Will the digital antennas greatly boost the signals? I really don't want cable as I don't watch tv that often.
Thanks in advance for all input.