可能是这样的

HD试播时Verizon是有一段时间没有把所有付费频道加密。如果你真收不到clear QAM 高清 local频道，直接找Versizon客服，Verizon应该给你解决这个问题，因为法律规定 cable providers must provide un-encrypted local channels, be it SD or HD. I know Verizon has it in HD in my area (NE coast). Comcast has only SD signal even for the un-encrypted locals, and does not provide local channels in the HD format! Fvck Comcast for that. Cheers.