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 KO4UDI-7 - show graphs
Comment: monitoring 146.52
Location: 46°47.33' N 92°11.73' W - locator EN36VS69MH - show map
6.8 km West bearing 275° from Duluth, Saint Louis County, Minnesota, United States [?]
10.3 km Northwest bearing 317° from Superior, Douglas County, Wisconsin, United States
Last position: 2025-10-05 23:10:12 UTC (26d 14h16m ago)
2025-10-05 18:10:12 CDT local time at Duluth, United States [?]
Course:
Speed: 33 km/h
Last path: KO4UDI-7>APN000 via WIDE1-1,WIDE2-1,qAR,KB1YTR-1 (good)
Positions stored: 1318
Other SSIDs: KO4UDI-10 KO4UDI-9 KO4UDI
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