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 object BI4AAU B - show graphs
Source callsign: BI4AAU-S
Comment: 70cm Voice (D-Star) 434.98500MHz -1.0000MHz
Location: 31°05.45' N 121°12.65' E - locator PM01OC51HT - show map
3.8 miles North bearing 357° from Songjiang, Shanghai Shi, China [?]
4.2 miles North bearing 18° from Fangsong, Shanghai Shi, China
17.2 miles Southwest bearing 238° from Shanghai, Shanghai Shi, China
83.1 miles Northeast bearing 48° from Hangzhou, Zhejiang Sheng, China
Last position: 2025-01-20 01:58:11 EST (1h23m ago)
2025-01-20 14:58:11 CST local time at Songjiang, China [?]
Altitude: 10 ft
Last path: BI4AAU-S>APDG01 via TCPIP*,qAC,BI4AAU-GS
Positions stored: 4
Others sourced by BI4AAU-S: BI4AAU C
Stations near current position of BI4AAU B - show more
callsign distance last heard - EST      callsign distance last heard - EST
BI4AAU-B0.0 yards 0°2025-01-20 01:58:21 BH4FFD-82.5 miles 48°2025-01-19 10:08:35
BH4FFD-52.5 miles 46°2025-01-04 01:36:19 BH4GQD-102.8 miles 182°2025-01-13 06:47:20
BH4GQD-92.8 miles 182°2025-01-19 23:06:33 BH4HVG-103.1 miles 213°2025-01-20 03:19:34
BH4ERF-44.4 miles 65°2025-01-19 04:54:49 BH4FOK-94.7 miles 158°2025-01-07 16:58:26
BD4ERW-R5.3 miles 91°2025-01-16 19:07:21 BH4ERF-N5.4 miles 64°2025-01-19 19:21:12
BH4HYR-Y5.5 miles 155°2025-01-11 07:59:47 BH4HRM-96.2 miles 20°2025-01-18 08:22:12
BH4GPA6.6 miles 64°2024-12-26 08:39:39 BH4GPA-106.6 miles 64°2025-01-13 07:33:25
ALIEN-R7.1 miles 292°2025-01-20 03:03:50 BG2ANC-R7.1 miles 292°2025-01-14 19:16:14
BA4RAA-R7.1 miles 292°2025-01-18 04:32:44 BH8GBK-D7.1 miles 292°2025-01-20 03:05:19
BH1NAF-17.1 miles 173°2025-01-17 21:22:55 BH4GXQ-97.2 miles 68°2025-01-20 03:20:51
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