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 BI4AJM-1 - show graphs
Comment: FM145.100
Location: 31°00.39' N 121°13.40' E - locator PM01OA61TN - show map
9.7 km Southwest bearing 203° from Dongjing, Shanghai Shi, China [?]
10.3 km Southwest bearing 231° from Xinqiao, Shanghai Shi, China
32.8 km Southwest bearing 223° from Shanghai, Shanghai Shi, China
128.8 km Northeast bearing 52° from Hangzhou, Zhejiang Sheng, China
Last position: 2025-10-11 15:45:48 UTC (6d 23h13m ago)
2025-10-11 23:45:48 CST local time at Dongjing, China [?]
Course: 234°
Speed: 0 km/h
Last WX report: 2025-04-18 16:06:18 UTC (182d 22h53m ago) – show weather charts
23.9 °C 67% 1002.9 mbar 1.3 m/s Northeast
Device: R3ABM: BrandMeister DMR
Last path: BI4AJM-1>APBM1D via DMR*,qAS,HL2UVH-10 (good)
Positions stored: 28
Other SSIDs: BI4AJM-D BI4AJM-7
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