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. There will also be support for Debian Linux, MacOS, and Windows. 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. An internet connection is required for this app to work.