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 KO4XYZ - show graphs
Comment: Hello from ax25 kernel
Location: 38°55.00' N 77°35.00' W - locator FM18FW00AA - show map
6.9 km East bearing 78° from Bull Run Mountain Estates, Prince William County, Virginia, United States [?]
12.5 km North bearing 22° from Haymarket, Prince William County, Virginia, United States
47.4 km West bearing 273° from Washington, D. C., Washington, D.C., United States
93.5 km Southwest bearing 244° from Baltimore, City of Baltimore, Maryland, United States
Last position: 2025-08-09 18:35:49 UTC (23d 18h55m ago)
2025-08-09 14:35:49 EDT local time at Bull Run Mountain Estates, United States [?]
Position ambiguous: Precision reduced at transmitter by 3 digits, position resolution approximately 18.5 km.
Device: Open Source: Xastir (software, Linux/Unix)
Last path: KO4XYZ>APX222 via KV3B-1*,WIDE2-1,qAR,W4VA-13 (good)
Positions stored: 3
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