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 K9MS-9 - show graphs
Comment: 441.525MHz T123 +500
Mic-E message: Off duty
Location: 42°36.40' N 88°25.44' W - locator EN52SO95CO - show map
1.8 km Northeast bearing 25° from Lake Geneva, Walworth County, Wisconsin, United States [?]
9.7 km Northwest bearing 322° from Pell Lake, Walworth County, Wisconsin, United States
63.9 km Southwest bearing 221° from Milwaukee, Milwaukee County, Wisconsin, United States
105.5 km Northwest bearing 323° from Chicago, Cook County, Illinois, United States
Last position: 2025-08-06 23:41:01 UTC (42d 19h50m ago)
2025-08-06 18:41:01 CDT local time at Lake Geneva, United States [?]
Altitude: 274 m
Course: 101°
Speed: 9 km/h
Device: Yaesu: FTM-300D (rig)
Last path: K9MS-9>TRSV4P via WIDE1-1,WIDE2-1,qAR,WX9EMS (good)
Positions stored: 4132
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