Station info - map view · info · telemetry · weather · raw · status · beacons · messages · bulletins · browse · moving · my account
Callsign, ship name or locator: Clear       
It is possible to search using wildcards (*?) after a prefix. Example: OH*
APRS station W1SAB-9 - show graphs
Comment: openSPOT4
Location: 43°02.26' N 70°48.83' W - locator FN43OA29IA - show map
5.6 km Southwest bearing 228° from Portsmouth, Rockingham County, New Hampshire, United States [?]
8.4 km Southwest bearing 228° from Kittery, York County, Maine, United States
78.1 km North bearing 15° from Boston, Suffolk County, Massachusetts, United States
80.6 km North bearing 14° from South Boston, Suffolk County, Massachusetts, United States
Last position: 2025-08-04 09:50:30 UTC (1d 8h53m ago)
2025-08-04 05:50:30 EDT local time at Portsmouth, United States [?]
Device: SharkRF: openSPOT4 (gadget)
Last path: W1SAB-9>APOSB4 via W1SAB,C4FM*,qAS,W1SAB (good)
Positions stored: 15
Other SSIDs: W1SAB W1SAB-Y W1SAB-14 W1SAB-7 W1SAB-N
Stations which heard W1SAB-9 directly on radio –
callsign pkts first heard - UTC last heard longest (tx => rx) longest at - UTC

Only position packets which were originated by the station are shown here. The range statistics show some extra long hops, because some digipeaters do not correctly add themselves to the digipeater path. Please check the raw packets.
About this site
This page shows real-time information collected from the Automatic Position Reporting System Internet network (APRS-IS). APRS is used by amateur (ham) radio operators to transmit real-time position information, weather data, telemetry and messages over the radio. A vehicle equipped with a GPS receiver, a VHF transmitter or HF transceiver and a small computer device called a tracker transmits it's location, speed and course in a small data packet, which is then received by a nearby iGate receiving site which forwards the packet on the Internet. Systems connected to the Internet can send information on the APRS-IS without a radio transmitter, or collect and display information transmitted anywhere in the world.
User guide · FAQ · Blog · Discussion group · Linking to aprs.fi · AIS sites · Service status · Database statistics · Advertising on aprs.fi · Technical details · API · Change log · Planned changes · Credits and thanks · Terms Of Service · iPhone/iPad APRS