So I went up into the attic this weekend to make some adjustments to the antenna. According to antennaweb, the KTBC tower is a little more to the east (left) from my location as compared to the towers for KVUE, KEYE, etc. I moved the antenna to the left in small increments with no change. I finally decided to turn the antenna around all the way to the NE towards Waco. I pulled in their ABC and FOX affiliates with no issues...signals were great. I decided to check Austin stations. I lost a few (KXAN/KBVO)...and some were down in the 10-20% signal strength range...but KTBC was coming in at about 25%. WTH??
I then moved the antenna back towards Austin, but really pointed more to the west of the direction of the towers. Which is nowhere near where they should be pointed. Result: all channels from the Austin area coming in. I'm guessing buildings, foliage, terrain, etc are playing a factor in this.
However, I have noticed one issue with KTBC. When my kitchen lights are turned on, I appear to be getting interference and I lose the KTBC signal. The same goes for our landscape lighting, although the landscape lighting is not as severe...with the kitchen it's unusable. UHF channels are unaffected.
the common factor with the landscape and kitchen lights are that they both have LED lights. But we also have some lamps in the house that are LED's and there is no issue when they are on.
Not sure where to start debugging this.