Yeah every now and then I get TP on one particular station that doesn't have any RDS support. In fact there is only one RDS station where I live.

But even once the TP comes up, I don't see any sort of announcement. TP appears with only AF turned on too which is strange. I would have thought that it would only appear with TA on, unless it's supposed to appear to let the user know the station carries the announcements.