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 N9RU - show graphs
Comment: SharkRF openSPOT4
Location: 37°45.05' N 88°54.00' W - locator EM57NS20AE - show map
3.7 km Northeast bearing 52° from Marion, Williamson County, Illinois, United States [?]
8.1 km South bearing 163° from Johnston City, Williamson County, Illinois, United States
120.5 km West bearing 258° from Evansville, Vanderburgh County, Indiana, United States
149.4 km Southeast bearing 130° from Saint Louis, City of Saint Louis, Missouri, United States
Last position: 2025-06-01 23:08:35 UTC (5d 7h5m ago)
2025-06-01 18:08:35 CDT local time at Marion, United States [?]
Altitude: 152 m
Last WX report: 2025-05-17 01:43:07 UTC (21d 4h30m ago) – show weather charts
1002.8 mbar
Device: SharkRF: openSPOT4 (gadget)
Last path: N9RU>APOSB4 via TCPIP*,qAC,T2SPAIN
Positions stored: 588
Other SSIDs: N9RU-7 N9RU-B N9RU-3
Last heard a station directly: 2025-05-06 17:46:15 UTC (31d 12h27m ago)
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