Yes. A 211 can be used with any TV, SD or HD. It even has an RF modulator on it (channel 3 or 4) so you do not need AV inputs on the TV.
The HD channels will obviously be downconverted to SD (480i NTSC/AV outputs) but you will be able to watch the channels. Output aspect is your choice of zoomed or letterboxed on HD channels.
The HD channels will obviously be downconverted to SD (480i NTSC/AV outputs) but you will be able to watch the channels. Output aspect is your choice of zoomed or letterboxed on HD channels.