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 weather station WO4U-13 - show graphs
Last status: 031846 >>> Unattended WX Station <<<
Last beacon: WO4U-13/R RELAY/D WO4U-1/B
Location: 35°55.13' N 85°04.48' W - locator EM75LW10AM - show map
5.4 km North bearing 340° from Lake Tansi, Cumberland County, Tennessee, United States [?]
5.4 km Southwest bearing 232° from Crossville, Cumberland County, Tennessee, United States
99.3 km North bearing 12° from Chattanooga, Hamilton County, Tennessee, United States
103.9 km West bearing 268° from Knoxville, Knox County, Tennessee, United States
Last position: 2025-05-27 18:18:02 UTC (6d 1h38m ago)
2025-05-27 13:18:02 CDT local time at Lake Tansi, United States [?]
Last WX report: 2025-05-27 18:31:04 UTC (6d 1h25m ago) – show weather charts
18.3 °C 99% 1018.7 mbar 0.9 m/s South
Device: Sproul Brothers: WinAPRS (software, Windows)
Last path: WO4U-13>APW290 via WIDE2-2,qAR,KA4J-3 (good)
Positions stored: 1
Other SSIDs: WO4U-9 WO4U-8 WO4U-15
Last heard a station directly: 2025-04-09 01:09:13 UTC (54d 18h47m 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