I am in Los Angeles (Hollywood) and like several others who have posted I have lost a few channels after the transition.

From reading the other posts I am still not clear: Is there a reason for this? Is there any hope that a future scan might recapture them?

I have a new television with a built-in digital turner and one of the UHF/VHF indoor antennas recommended by others on this site. Before the transition, I picked up digital signals from all the major networks in town (sometimes requiring a little fine tuning but not much).

After the transition, I lost channels 11.1 (KTTV Fox) and 13.1 (KCOP).
According to the government's DTV reception map, I should should get strong signals from these stations and more. No matter how many times I've tried to rescan or change the position of the antenna, I cannot seem to get these channels to reappear.

Why might this be? Why would stations be sending out weaker signals after the official transition rather than before? I expected to get more channels not fewer. This seems illogical.

Is there any hope that this might change in the near future or are the channels broadcast and their strength set as of June 13th?