Funny that you mentioned WYES.
I have a Mohu 50, and I have no problems getting PBS/WYES. I live in Kenner.
However, this past weekend, My dad told me that he too wants to get rid of cable. So, I went to Walmart. I saw that they had an RCA flat antenna for sale for about half of what the Mohu costs. So, I took a chance and bought two of them. I took them to my parents house and hooked them up. I got all of the channels except PBS.
I repositioned the antennas and ran another channel search. I got the same results.....No PBS.
Needless, to say, I took the antennas back to Walmart.
So, I told my Dad, I think he needs to get the Mohu 50, like I have.
Anyway, I think it may have to do with the brand of antenna.
The Mohu 50 is more expensive, but, I can pick up WYES with it, so I guess the extra $30 is worth it.