So I tried a new antenna.
I went to Fry’s yesterday and picked up a small amplified antenna. The only viable place for me to locate the antenna is in the window, and since I’m on the ground floor, with only east-facing windows, I didn’t hold out much hope seeing anything more than I saw before.
After much moving the antenna around, I finally found a position that would let me pick up the two stations I was having the most trouble receiving, KZHO and KBPX. Still no luck picking up KDHU, and KUGB has disappeared from my scan as well. Anyone still seeing channel 28?