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 BI4AST-7 - show graphs
Mic-E message: Off duty
Location: 31°07.25' N 121°21.31' E - locator PM01QC28OX - show map
12.1 km Southwest bearing 226° from Xuhui, Shanghai Shi, China [?]
12.4 km Southwest bearing 210° from Changning, Shanghai Shi, China
14.9 km Southwest bearing 221° from Shanghai, Shanghai Shi, China
75.0 km East bearing 106° from Suzhou, Jiangsu Sheng, China
Last position: 2025-12-28 07:18:47 UTC (23d 8h35m ago)
2025-12-28 15:18:47 CST local time at Xuhui, China [?]
Altitude: 76 m
Course:
Speed: 0 km/h
Last path: BI4AST-7>SQPWR5 via WIDE1-1,WIDE2-1,qAS,BH4FEN-10 (good)
Positions stored: 16
Other SSIDs: BI4AST-1 BI4AST-9 BI4AST-10 BI4AST BI4AST-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