If your question is can you record television with it on your computer the
answer is yes. As long as the stations are broadcast digital and DRM-free.
If your question is can you record tapes the answer is no. It wouldn't work
to convert old video tapes to digital (like VHS tapes) because VHS players
are going to output in analog and this is a digital ATSC and DVB-T digital
tuner.
It may make sense for us to investigate an analog option. I believe this
would be useful for connecting DVD/VHS players, game consoles (older ones at
least), and at least some cable boxes I believe (ones that are still
outputting analog?).