I've been having a problem with Fox Channel 26 breaking up. Sometimes it comes in just fine, other times it would break up so much as to be unwatchable. Recordings of shows that are 3+ GB when the signal was fine would be less than 1GB when the signal was having problems. So, I picked up an outdoor antenna from Fry's and mounted it where the DirecTV dish used to be. I reused the existing coax cable.
With the prior antenna I was getting 80% signal quality for Fox. With the new antenna it's now 100%. Hopefully this solves the problem with 26 while maintaining the excellent reception I had for the other channels. I should know in a few days.
I managed to strip the threads on one side of the mounting bracket (a U shaped bolt) that looks like the one below from Lowes. It's staying in place at the moment, but I'll need to replace it before we get a storm. I plan to pick it up tomorrow during lunch.