2016-10-19, 11:28
(2016-10-18, 23:28)leo5111 Wrote: question i have Cox cable just for NET, NO TV..if i plug into the cable will i get any channels or i have to actualy have TV service with them?
The US uses 8VSB ATSC for over-the-air (i.e. signals you receive via an antenna/aerial) and QAM ATSC for Cable broadcasts (alongside analogue NTSC in some areas) - many, but not all, tuners are capable of demodulating (i.e. receiving) both standards.
At one point cable companies provided local (ABC, CBS, NBC, Fox, PBS etc.) channels un-encrypted on QAM (as they are on 8SVB) but increasingly cable cos are switching to everything being encrypted. If it's encrypted, a QAM tuner won't be much use.
Also - if your cable provider offers TV via an IPTV route over your broadband internet connection rather than via ATSC then QAM compatibility is moot. (Not sure how widespread IPTV is in the US for main cable service provision)