You could also ask the question: "what's really a rimshot these days?"
No question that signals such as 96.7 and 105.7 are off-center from the city cores of Dallas and FW, but so is the steady trend of population growth for the last three decades, which has all been north away from Cedar Hill.
Meters in Collin and Denton and Ellis and Wise count just as much as the ones in Tarrant and Dallas counties, after all, and there are enough of them now to make a difference.