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 BI4AVS-1 - show graphs
Comment: SPMC_001 ShangHai China
Mic-E message: Off duty
Location: 31°12.15' N 121°20.55' E - locator PM01QE18CO - show map
10.0 km West bearing 274° from Xuhui, Shanghai Shi, China [?]
11.0 km Northwest bearing 308° from Changqiao, Shanghai Shi, China
11.2 km West bearing 259° from Shanghai, Shanghai Shi, China
151.4 km Northeast bearing 48° from Hangzhou, Zhejiang Sheng, China
Last position: 2025-09-21 01:06:03 UTC (27d 20h11m ago)
2025-09-21 09:06:03 CST local time at Xuhui, China [?]
Position ambiguous: Precision reduced at transmitter by 1 digits, position resolution approximately 185.0 m.
Course:
Speed: 0 km/h
Device: Yaesu: FTM-510D (rig)
Last path: BI4AVS-1>SQQRQL via WIDE1-1,WIDE2-1,qAS,BH4FEN-10 (good)
Positions stored: 2
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