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 SQ4BJA-3 - show graphs
Comment: Tomek w mobilu / BJA-Tracker
Last status: Telemetry: A1=Speed A2=Course A3=Altitude A4=GSM A5=Battery
Location: 52°18.00' N 21°05.70' E - locator KO02NH12JA - show map
4.4 km West bearing 265° from Zielonka, Masovian Voivodeship, Poland [?]
6.4 km Northwest bearing 313° from Rembertów, Masovian Voivodeship, Poland
9.6 km Northeast bearing 36° from Warsaw, Masovian Voivodeship, Poland
127.0 km Northeast bearing 61° from Łódź, Łódź Voivodeship, Poland
Last position: 2026-01-19 20:02:45 UTC (7h22m ago)
2026-01-19 21:02:45 CET local time at Zielonka, Poland [?]
Course: 27°
Speed: 7 km/h
Last telemetry: 2026-01-19 22:58:32 UTC (4h26m ago) – show telemetry
Speed: 0 km/h, Course: 0 deg, Altitude: 0 m, GSM: 0 %, Battery: 16 %
Device: Unknown: Unknown
Last path: SQ4BJA-3>APRS via TCPIP*,qAC,T2ERFURT
Positions stored: 1902
Other SSIDs: SQ4BJA-9 SQ4BJA-Y SQ4BJA-18 SQ4BJA-7 SQ4BJA-B
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