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 BI4SID-15 - show graphs
Comment: 崇川区中继台欢迎您,与您电波相遇,VY73! 4.0V L
Location: 32°02.26' N 120°49.25' E - locator PM02JA89LA - show map
3.2 miles West bearing 279° from Nantong, Jiangsu Sheng, China [?]
6.4 miles West bearing 286° from Guanyinshan, Jiangsu Sheng, China
52.4 miles North bearing 15° from Suzhou, Jiangsu Sheng, China
67.6 miles Northwest bearing 327° from Shanghai, Shanghai Shi, China
Last position: 2025-01-27 01:35:53 EST (5d 2h25m ago)
2025-01-27 14:35:53 CST local time at Nantong, China [?]
Device: Open Source: Xastir (software, Linux/Unix)
Last path: BI4SID-15>APX1C5 via TCPIP*,qAC,T2CS
Positions stored: 14
Other SSIDs: BI4SID-10 BI4SID-D
Stations near current position of BI4SID-15 - show more
callsign distance last heard - EST      callsign distance last heard - EST
BI4SID-D0.5 miles 149°2025-01-24 01:23:41 BI4XGV-D0.5 miles 149°2025-01-30 06:42:30
BA4QYX-70.5 miles 84°2025-01-25 22:04:12 BD4RGM-31.8 miles 129°2025-02-01 03:56:19
BD4RVC-52.0 miles 92°2025-01-18 22:22:16 BG4USS-52.0 miles 111°2025-01-25 09:56:03
BG4USS2.0 miles 111°2025-01-26 12:15:15 BG4USS-102.0 miles 112°2025-02-01 03:40:44
BG4USS-82.0 miles 111°2025-02-01 03:55:27 BG4USS-32.3 miles 121°2025-02-01 03:57:41
BA4RBE-32.4 miles 147°2025-01-26 03:27:38 BI4SID-102.5 miles 137°2025-02-01 03:59:02
BD4TMU-82.5 miles 124°2025-01-31 04:39:00 BD4WNX-32.6 miles 54°2025-02-01 03:46:55
BA4UNT-102.7 miles 113°2025-02-01 03:54:54 BI4XGL-82.7 miles 125°2025-01-31 07:46:05
BA4RAA-103.0 miles 142°2025-01-18 09:33:14 BD4XFF-103.1 miles 129°2025-02-01 03:52:31
BI4UBN-73.1 miles 106°2025-01-08 09:04:45 BA4RAC-53.2 miles 78°2025-01-24 09:27:26
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