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 BI1BIF-1 - show graphs
Mic-E message: Off duty
Location: 39°54.27' N 116°31.43' E - locator OM89GV27UB - show map
6.4 km West bearing 269° from Tongzhou, Beijing, China [?]
10.8 km East bearing 92° from Beijing, Beijing, China
101.5 km Northwest bearing 327° from Tianjin, Tianjin Shi, China
Last position: 2025-08-03 06:51:38 UTC (7h40m ago)
2025-08-03 14:51:38 CST local time at Tongzhou, China [?]
Altitude: 42 m
Course: 114°
Speed: 4 km/h
Device: Yaesu: FTM-400DR (rig)
Last path: BI1BIF-1>SYUTR7 via qAS,BY1AA-10
Positions stored: 8957
Other SSIDs: BI1BIF BI1BIF-Y
Stations which heard BI1BIF-1 directly on radio –
callsign pkts first heard - UTC last heard longest (tx => rx) longest at - UTC

Only position packets which were originated by the station are shown here. The range statistics show some extra long hops, because some digipeaters do not correctly add themselves to the digipeater path. Please check the raw packets.
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