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APRS (Automatic Packet Reporting System) is a digital communications travel insurance protocol for exchanging information between a large number of stations 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 mortgage calculator 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, health insurance called 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 real estate receive the packet. At each digipeater, the packet path is changed. The packet will only be repeated through a certain number of digipeaters

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