Radio stations can broadcast some additional data along with the songs they play. Devices with RDS feature can display this data. N78 is one such device. Wasn't sure which radio station supports it but yesterday saw it in action while playing Big 92.7 FM.

That circled text is RDS, usually its used to show track information or some advert. The RDS/AF usually dimmed, brighten up once RDS reception starts.
Wonder how to make FM transmitter work,
don't think its supported in our region.