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*
Web station on4CHJ - show graphs
Location: 50°46.72' N 4°53.43' E - locator JO20KS66UV - show map
7.4 km Southeast bearing 148° from Boutersem, Provincie Vlaams-Brabant, Flanders, Belgium [?]
10.7 km Southeast bearing 121° from Bierbeek, Provincie Vlaams-Brabant, Flanders, Belgium
38.9 km East bearing 102° from Brussels, (Bruxelles-Capitale), Brussels Capital Region, Belgium
59.7 km Southeast bearing 145° from Antwerpen, Provincie Antwerpen, Flanders, Belgium
Last position: 2025-05-11 02:03:39 UTC (3d 22h27m ago)
2025-05-11 04:03:39 CEST local time at Boutersem, Belgium [?]
Altitude: 97 m
Course: 99°
Speed: 0 km/h
Last path: >aprs.fi via Web
Positions stored: 1
Other SSIDs: ON4CHJ-15 ON4CHJ-R ON4CHJ-Y ON4CHJ-N
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