The FM Radius 1U from Koma Elektronik is a simple FM radio in Intellijel 1U format. It is actually a radio for the FM range. It can be used to receive the news and the eternal top 20 charts of the larger radio stations. The Chaos socket is a control voltage input with which the frequency control is modulated. For example, you can use an envelope or an LFO to scan back and forth between several stations or jump wildly to all frequency ranges via random CV. Somewhere in between there will probably be a signal that can be musically incorporated using a VCA and a BPM delay.