Edge ™ 205/305 Owner’s Manual 53N AVIGATIONEach GPS satellite in space hasa specific number that identifiesit. The numbers of several GPSsatellites appear on the circulargraphic in the middle of the page.The number corresponds to thecurrent position of that satellite inspace. Each highlighted numberon the graphic corresponds to asatellite from which the Edge iscurrently receiving signals. Theblack bars under the graphicrepresent the strength of eachsatellite signal received (thenumber of the satellite appearsbelow each bar).About GPSThe Global Positioning System(GPS) is a satellite-basednavigation system made up of anetwork of 24 satellites placedinto orbit by the United StatesDepartment of Defense. GPSwas originally intended for militaryapplications, but in the 1980s,the government made the systemavailable for civilian use. GPSworks in any weather conditions,anywhere in the world, 24 hoursa day. There are no subscriptionfees or setup charges to useGPS.For more information, visitwww.garmin.com/aboutGPS.