I want to get a TV receiver for my Macbook that I can plug in to a USB port. I found two receivers (both at 100 euros). One is a DVB-T receiver while the other one works with PAL /SECAM / NTSC. The latter apparently works in North America and Europe. Can I receive DVB-T in the USA as well as in Europe or does only the PAL /NTSC receiver work in both areas?