Thanks for the info Schmave, don't even know if I will have time to make it into Columbus; about the closest to Columbus I will probably get to is Thornville; with these reunions, there is usually a pretty tight schedule and sometimes not even much time to dx; although last year I made an excuse to leave one of the dinners early, saying I had to go back to my room for a few items and then hurriedly went to the parking lot and got into the rental car for about 10 minutes of dx'ing and then back to the dinner.
It's hard to imagine all these stations with nulls of any type to the south, since here in the St. Pete area, no stations have nulls to the south.
One (WWBA 820) has a null to the w.n.w.; but most of the nulls are to the north, northwest or northeast.
drt,
st. petersburg,fl