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 SQ5TDR-Y - show graphs
Comment: 0x35 via MMDVM
Location: 52°17.92' N 21°02.69' E - locator KO02MH51JQ - show map
8.0 km North bearing 16° from Warsaw, Masovian Voivodeship, Poland [?]
11.5 km East bearing 110° from Łomianki, Powiat warszawski zachodni, Masovian Voivodeship, Poland
14.0 km Southeast bearing 118° from Kiełpin, Powiat warszawski zachodni, Masovian Voivodeship, Poland
123.9 km Northeast bearing 60° from Łódź, Łódź Voivodeship, Poland
Last position: 2026-02-14 14:02:58 UTC (13d 3h17m ago)
2026-02-14 15:02:58 CET local time at Warsaw, Poland [?]
Speed: 2 km/h
Device: unknown: D-Star APDPRS (D-Star)
Last path: SQ5TDR-Y>APDPRS via C4FM*,qAR,SR5ZQ-R (good)
Positions stored: 3
Other SSIDs: SQ5TDR-7 SQ5TDR-3 SQ5TDR
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