Advertisements Hooked up my Tivo HD last night using Comcast Cable. No cable cards yet (supposed to be installed Saturday). Here is my issue. Almost every time I change channels, the system pauses "searching for signal". The delay is annoying at best. I only get channels 2-99 and according to TIVO none of these are digital. All stations are coming in as 480 dpi. I has hoped to pick up some non-scrambled digital channels without the cable cards, What can be the cause of the "searching for signal" on channel changes? Is it true that all Comcast Chicago 2-99 channels are analog and none are digital?