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 BI1HJR-4G - show graphs
Comment: E2[业余无线电爱好者]E1[信号强度:-59 卫星数量:0/0 CPU温度:32°C 设备电压:4.1V]
Location: 39°54.94' N 116°33.02' E - locator OM89GV69AS - show map
4.3 km West bearing 285° from Tongzhou, Beijing, China [?]
13.1 km East bearing 86° from Beijing, Beijing, China
101.3 km Northwest bearing 328° from Tianjin, Tianjin Shi, China
Last position: 2026-02-01 03:52:15 UTC (2d 7h55m ago)
2026-02-01 11:52:15 CST local time at Tongzhou, China [?]
Speed: 4 km/h
Last path: BI1HJR-4G>APRS4G via TCPIP*,qAC,T2HAKATA
Positions stored: 2
Other SSIDs: BI1HJR BI1HJR-5 BI1HJR-1 BI1HJR-10
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