well i have a samung hdtv 46 inch,1080p which has some hd tuners and some antennas built in,im able to get some hd channels but not all,and they rnt really the channels on the list for my area,and sometimes i lose some channels and get some channels later on,also the channel number changes(like lets say one day it 12.1 the next time its like 0.712.the tv searches for three different types of signals on an air or cable like signal,like std,etc.i have both cable and dish,i have cox for cable and dish network for dish

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