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 BI9ALU-7 - show graphs
Comment: 天线位置南三环,欢迎通联 4.0V
Location: 34°10.45' N 108°53.81' E - locator OM44KE71OT - show map
2.1 km South bearing 199° from Dianzicheng, Shaanxi, China [?]
4.6 km South bearing 161° from Zhangbagou, Shaanxi, China
9.8 km South bearing 197° from Xi’an, Shaanxi, China
25.5 km Southeast bearing 135° from Xianyang, Shaanxi, China
Last position: 2026-01-16 12:47:01 UTC (3d 3h8m ago)
2026-01-16 20:47:01 CST local time at Dianzicheng, China [?]
Course: 197°
Speed: 4 km/h
Last path: BI9ALU-7>APN000 via TCPIP*,qAC,T2NANJING
Positions stored: 641
Other SSIDs: BI9ALU-15 BI9ALU-3 BI9ALU
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