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 BH4AIU-9 - show graphs
Comment: 145.100MHz YAESU 500DR
Mic-E message: Off duty
Location: 31°17.09' N 121°23.86' E - locator PM01QG78RI - show map
5.8 km Northeast bearing 29° from Changzheng, Shanghai Shi, China [?]
6.0 km Northeast bearing 44° from Zhenxin, Shanghai Shi, China
9.0 km Northwest bearing 321° from Shanghai, Shanghai Shi, China
161.4 km Northeast bearing 47° from Hangzhou, Zhejiang Sheng, China
Last position: 2025-09-15 23:29:49 UTC (8h59m ago)
2025-09-16 07:29:49 CST local time at Changzheng, China [?]
Altitude: 17 m
Course: 29°
Speed: 69 km/h
Device: Yaesu: FTM-500D (rig)
Last path: BH4AIU-9>SQQWP9 via qAS,BH4DSC-10
Positions stored: 189706
Other SSIDs: BH4AIU-14 BH4AIU-6 BH4AIU-3 BH4AIU-7
Last heard a station directly: 2025-07-04 09:25:36 UTC (73d 23h3m ago)
Stations which heard BH4AIU-9 directly on radio –
callsign pkts first heard - UTC last heard longest (tx => rx) longest at - UTC

Only position packets which were originated by the station are shown here. The range statistics show some extra long hops, because some digipeaters do not correctly add themselves to the digipeater path. Please check the raw packets.
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