All radio stations in Kaldus will have a unique call-sign. In addition, all radio stations must provide their station as a streaming option with a standard protocol. The Kaldus Radio app will be available not only on Kal-OS, but Android, and iOS. The subscriber will type in the callsign which will always start with R followed by 4 letters. The radio app will show what song is playing, and the artist. This will allow the subscriber to learn new music, and find out what that new hit is.