I have to second the thought about LTE interference. You never know what kind of localized interference cell towers can create...there's a Verizon tower in downtown Leesburg that completely kills 97.9 FM (!) while driving past.I get WPXW on 66 just not on 60 anymore (I used to get both a few years ago) [...]That actually sounds as if it might be the culprit (only suggested "new" potential problem). Thanks!
Interesting about Ion - WWPX (the virtual ch. 60 license) pushed through a very very low powered DRT from Fort Reno (WJLA/WUSA tower) during the digital transition, claiming increased interference from the adjacent Baltimore stations. I had seen the paper but always wondered whether it actually existed. License would have expired sometime in 2013/14, obviously.