Kalmar "RACON" kalma ce ta ruwa wacce ke nufin "radar beacon". Yana nufin na'urar da ke fitar da siginar radar don taimakawa jiragen ruwa da sauran jiragen ruwa sanin matsayinsu da kuma guje wa karo. Ana yawan amfani da RACONs tare da fitilun fitilu da sauran kayan aikin kewayawa, kuma yawanci suna fitar da jerin dige-dige ko dashes waɗanda suka yi daidai da harafin Morse code "R".
