I carried the antenna all over the apartment (and put it a different heights varying from -3 to ~15 ft above ground level) and succeeded in finding places where I lost other channels (almost always CBS first), but none where I gained Fox or any other channels.
Do you mean an antenna something like
this (which looks to be a product your company sells?) or
this?
It looks like WNUV and WBFF are transmitted from the same tower (and at the same height), though WBFF is transmitted at lower power. Is the power difference enough to cause me not to receive WBFF at all?