WREX is not doing well with 12 kw down here in DeKalb. At my place on the northwest side, I used to get it easily with my ChannelMaster 4228 UHF antenna. But now, I only have VHF antennas pointed east and south. Picking it up off the side isn't working from either antenna. I have one for standby use and that one may need to be added to my antenna arsenal to get it. As a side note, I have a ChannelMaster 4228 (discontinued) UHF-only antenna at work, and it's near the top of a 80' building, or about 60' up. It gets WREX-DT in going from good to bad. But to be fair, 13 analog off that thing was multipath Hades and I fully expect my third generation tuner isn't liking it.
But on a nastier note, they couldn't even lock it from the NIU Holmes Student Center antennas, some 180' up! They get blips of it, but a lock isn't there (it's even too weak to resolve any PSIP data). To be fair, those antennas are probably just UHF antennas, albeit professional (cable TV) quality ones. In any case, until that issue is resolved, it's been taken off the NIU campus cable system and replaced with WTVO-DT instead, which proverbially pegs the signal meter.
Edit: I unhooked one of my two ChannelMaster 4228 mesh screen UHF antennas, which I used primarily just to get WLS and WTTW in Chicago. When my 6th gen tuner came along, one of the two antennas wasn't needed anymore. So, I put it into a VHF slot on my VHF-UHF splitter, put it on the north side of my attic, pointed it towards Rockford, and it took a lot of tweaking to get the reception of WREX to a solid 60% lock, just leaning against a wall until the weather warms up and I can spend more time up there. I can't get WWTO-DT 10 anymore on my VHF antenna pointing south since that slot is now filled, but due to a hill in the way, I rarely got it anyway. If they go 80 kilowatts, then it'll happen, but until the weather warms up, this is what I have for now, which is fine.
Also, a friend of mine in Waterman, using a Winegard HD7084P pointed at Rockford, is now able to lock WREX-DT solidly for the first time. And, a guy on the Chicago OTA board who lives in Plano, 25 miles southeast of DeKalb, got WREX for a few minutes this afternoon, but then lost the signal. He can lock WTVO fine, but not WIFR or WQRF.