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 BI1TRF - show graphs
Comment: COCACOLA
Location: 31°14.16' N 121°29.89' E - locator PM01RF96SP - show map
1.8 km Southeast bearing 151° from Hongkou, Shanghai Shi, China [?]
3.5 km Southwest bearing 215° from Yangpu, Shanghai Shi, China
4.1 km East bearing 68° from Shanghai, Shanghai Shi, China
86.1 km East bearing 95° from Suzhou, Jiangsu Sheng, China
Last position: 2026-02-06 03:32:23 UTC (1d 48m ago)
2026-02-06 11:32:23 CST local time at Hongkou, China [?]
Altitude: 0 m
Course: 360°
Speed: 0 km/h
Device: R3ABM: BrandMeister DMR
Last path: BI1TRF>APBM1D via DMR*,qAS,BM2841-10 (good)
Positions stored: 4
Other SSIDs: BI1TRF-7 BI1TRF-N BI1TRF-Y
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