My digital signal from WJLA seems to drop suddenly from a siganl strength of 72 to 49. I believe that it is colacated with WUSA's digital transmitter and that one is rock solid. Am I alone in seeing this?
I didn't pay attention to the signal level, but I did experience a few audio glitches and buzzing from time to time around the time you posted (hadn't heard that on my 622 in ages). But for the most part it came in well at 55+ out.
Just checked my signal levels: watching football 81 from WRC-DT, steady 84 from WJLA-DT, but only mid-70s from WUSA-DT. Noticed that WUSA-DT dropped down to 62 and lost the picture for a monent. WRC and WJLA seem to be stead. Yes, it is my understanding they are co-located. And whatever problem you noticed earlier seemed to move over to WUSA.
My problem with WJLA-DT was brief. The only thing I can add is what I have observed over the years from my location: WUSA-DT seems to be a few points higher during the warm weather months, while WJLA-DT seems to be a few points higher during the cold weather months. I receive a very strong signal and signal from both stations and rarely have a problem with either one.