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 BI4ABF-9 - show graphs
Comment: 145.375MHz HAVAL BIGDOG
Mic-E message: Off duty
Location: 31°09.03' N 121°22.01' E - locator PM01QD46AC - show map
4.7 km North bearing 351° from Minhang, Shanghai Shi, China [?]
6.5 km West bearing 278° from Changqiao, Shanghai Shi, China
11.8 km Southwest bearing 227° from Shanghai, Shanghai Shi, China
149.4 km Northeast bearing 50° from Hangzhou, Zhejiang Sheng, China
Last position: 2025-11-01 09:06:56 UTC (2d 6h9m ago)
2025-11-01 17:06:56 CST local time at Minhang, China [?]
Altitude: -6 m
Course: 333°
Speed: 39 km/h
Device: Yaesu: FTM-500D (rig)
Last path: BI4ABF-9>SQPYP3 via WIDE1-1,WIDE2-1,qAS,BH4FEN-10 (good)
Positions stored: 3431
Stations which heard BI4ABF-9 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