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 BI4AII - show graphs
Comment: BI4AII
Location: 31°13.96' N 121°26.72' E - locator PM01RF35KU - show map
1.7 km Northwest bearing 314° from Shanghai, Shanghai Shi, China [?]
3.1 km Northwest bearing 327° from Luwan, Shanghai Shi, China
81.1 km East bearing 95° from Suzhou, Jiangsu Sheng, China
Last position: 2025-04-25 01:24:47 UTC (16d 28m ago)
2025-04-25 09:24:47 CST local time at Shanghai, China [?]
Last path: BI4AII>DM9100 via -1,qAS,BH4FEN-10 (good)
Positions stored: 6
Other SSIDs: BI4AII-R BI4AII-10 BI4AII-1 BI4AII-4
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