Radio IDs are other forms of radio jingles; Station ids are broadly known as Station identification. They are very short and distinctive in sound to always catch the attention of the listener. Radio IDS can be the radio station name, frequency, or better the combination of the two.
Most radio IDs could be just the vocal pronunciation or more likely in sung mode.
Most Station use one special voice on their station for their IDs, the reason is mainly to keep a certain level identification for the radio.
The follow audio samples are examples: