Following up my own query, it appears that the public radio feeds on Ku- are not the same as those on C-band on the same satellite (with different polarity). Among the Ku feeds I've identified are NPR stations/networks in Montana, Utah, New York state and Northwest Public Broadcasting. There are also feeds of KUNC in Colorado, KBPR in Minnesota, WNRN (a non-comm adult-alternative station) in Charlottesville VA, and Yes FM (Christian) from Toledo.