FM RainbowNone

FM RainbowNone is a radio frequency sent by the FM Rainbow service—a public broadcasting station in India—indicating that the station has been shut down or is temporarily unavailable. It represents a signal that the usual broadcast is not currently active, often used by receivers as a cue to switch to alternative sources or channels. Essentially, when a radio displays "RainbowNone," it means no active transmission is being received from the FM Rainbow station at that moment.