What I have noticed is the only stations in the US that REALLY use RDS is NPR Stations. In Boston, WGBH Classical uses the RDS layer to send out the type of music, the call letters, and every now and then what is playing. Beyond that, there is very little acceptance even if a channel is broadcasting RDS. I need to check with our SmartTraveler service and see if they broadcast RDS. If not, the next step is to convince them to do so with another radio station's signal.

Greg