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 BI4AEW-7 - show graphs
Comment: 145.775MHz 145.100
Location: 31°07.97' N 121°25.13' E - locator PM01RD01GV - show map
1.8 km Southwest bearing 235° from Changqiao, Shanghai Shi, China [?]
5.0 km Northeast bearing 58° from Minhang, Shanghai Shi, China
10.6 km South bearing 201° from Shanghai, Shanghai Shi, China
152.1 km Northeast bearing 52° from Hangzhou, Zhejiang Sheng, China
Last position: 2025-05-11 09:38:55 UTC (3d 12h1m ago)
2025-05-11 17:38:55 CST local time at Changqiao, China [?]
Altitude: 37 m
Course:
Speed: 0 km/h
Device: Open Source: APRSdroid (app, Android)
Last path: BI4AEW-7>APDR16 via TCPIP*,qAC,T2GB
Positions stored: 29
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