I just got a Samsung SIR-T151 (used) and I've noticed a couple of things. First, my reception is much much better at night. During the day I get lots of dropouts and pixellation but none at night. Second, when it is windy my reception is much poorer with lots of dropouts. Is this normal or coincidental? BTW, I realize that there is no HD broadcast during the day, I am just curious why the reception is poorer during the day and when it is windy.