KDKA, which has been the Pirates flagship radio station since 1951 and broadcast the first baseball game on radio back in 1921, is being dropped by the Pirates for the 2007 season. The Pirates flagship station in 2007 will be an FM station, WPGB. WPGB is a Clear Channel station that already carries Steelers and University of Pittsburgh sports. Somewhere Edwin Armstrong smiles.
This year, the Cardinals dropped longtime flaghship station KMOX for KTRS, a station in which the Cardinals own a stake.
KDKA and KMOX are both 50,000 watt stations that could be heard for long distances.
KDKA is such an old radio station that it was allowed to have a call sign starting with "K" despite being east of the Mississippi River.