You need an HDTV that has an ATSC (digital) tuner. This tuner will pick up the free local stations broadcasting in digital in your area. Depending on signal strength, you may also need an indoor antenna (any indoor antenna will do).
To find out what channels are available in your area, go to:http://www.antennaweb.org/aw/Address.aspx
Enter only the zip code of the person you are purchasing the HDTV for and two questions that follow. On the next page, move the House Icon until it is centered over the location of the nursing home and click the continue button. This will give you a list of digital (but not necessarily HD) channels available in that area.