Chances are if you’re reading this you are in Japan, own a Mac, and want to watch some free HD channels over UHF. The GV-MACTV is one of the few devices made for this purpose. Device Info: The GV-MACTV is made by I-O DATA and is a compact device that uses USB for power and to interface with the Mac. The device features a B-CAS card slot, which takes the included B-CAS card. This card is ...