I recently picked up the Pinnacle PCTV HD Pro Stick. It is powered by a USB port on my laptop, and displays NTSC (soon to go away), ATSC (the new digital standard), HDTV, and also receives FM radio. I added a set of inexpensive headphones, because laptop speakers have poor audio. Using the supplied antenna (a telescoping whip with a magnetic base) I was unable to get a good analog signal, but receive over 40 digital or HDTV signals. My normal plan is to connect it to the external antenna on my motor home so that I can watch TV while "on the road". It can also connect to Cable TV, and watch any station that does not require a converter box. I was quite surprised by the excellent digital and HDTV performance, especially with the substandard antenna. My plan for power and/or Cable TV outage is to use this device with my laptop to gather information from TV news, as appropriate. The laptop batteries will last for some time, and very little backup power is required to recharge the laptop batteries when they run low.

More info is on their web site: www.pinnaclesys.com. Standard disclaimers apply.