Attention cord cutters with an HDHomerun network TV Tuner. Schedules GH grabs today's TV schedules from your device. No ads. No subscription fees. See what you can get for free. Available for North American broadcast service only. Only useful with an HDHomerun. Requires an unused tuner for scanning. Some channels provide as much as a day's worth of data, some only the next few hours, so results will definitely vary. From the maker of Signal GH.