APRS has been developed since the late 1980s by Bob Bruninga, callsign WB4APR, currently a senior research engineer at the United States Naval Academy. He still maintains the main APRS website. The acronym "APRS" was derived from his callsign. In the 1990s as GPS excitement dominated many new applications, the "P" was often referred to as "Position" instead of the original "Packet". This skewed the perception of APRS as only a vehicle tracking 70-236 braindump system. Recently, the community has emphasized the term "packet" in the name, as the system's use and capabilities are far more robust.APRS (Automatic Packet Reporting System) is a digital communications protocol for exchanging information between a large number of stations latest dumps for 70-270 covering a large (local) area. As a multi-user data network, it is quite different from conventional packet radio. Rather than using connected data streams where stations connect to each other and packets are acknowledged and retransmitted if lost, APRS operates entirely in an unconnected broadcast fashion, using unnumbered AX.25 frames.[1] APRS packets are transmitted for all other stations to hear and use. Packet repeaters, called 70-448 braindump digipeaters, form the backbone of the APRS system, and use store and forward technology to retransmit packets. All stations operate on the same radio channel, and packets move through the network from digipeater to digipeater, propagating outward from their point of origin. All stations within radio range of each digipeater receive the packet. At each digipeater, the packet path is changed. The 70-290 braindump packet will only be repeated through a certain number of digipeaters -or hops- depending upon the all important "PATH" setting. Digipeaters keep track of the packets they forward for a period of time, thus preventing duplicate packets from being retransmitted. This keeps packets from circulating in endless loops inside the ad-hoc network. Eventually most packets are heard by an APRS Internet Gateway, called an IGate, and the packets are routed on to the Internet APRS backbone (where duplicate packets heard by other IGates are discarded) for display or analysis by other users connected to an APRS-IS server,