The antenna and transmitter were replaced because they could not output the full power signal that the new HD needed. The antenna was also mounted higher up on the tower to give better coverage.
Think most of your questions are probably answered by now. The last few days were just steps in the process to get things up and running. The channels will stay 22-1(13) and 28-1(11).
Note for Sunday morning, the 13th, from the WYOU/WBRE chief engineer:
Tomorrow around 8:30 / 9:00 AM WBRE and WYOU-DT will be off. WYOU 22 (Analog) will be at 5-10% power.
The last part of this project is my new tower lighting system. Tomorrow the tower crew will climb to the very top of our tower and analog antenna with RF Suits on to instal the top beacon.
I will make sure that WBRE-DT and WYOU-DT are back on BEFORE NFL on WYOU and NASCAR on NBC!