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 SP4I-9 - show graphs
Mic-E message: En route
Location: 53°46.48' N 19°49.07' E - locator JO93VS85DW - show map
1.7 km Northwest bearing 311° from Miłomłyn, Powiat ostródzki, Warmian-Masurian Voivodeship, Poland [?]
13.0 km Northwest bearing 312° from Ostróda, Powiat ostródzki, Warmian-Masurian Voivodeship, Poland
99.8 km Southeast bearing 130° from Gdańsk, Gdańsk, Pomeranian Voivodeship, Poland
112.9 km Southwest bearing 204° from Kaliningrad, Kaliningrad, Russia
Last position: 2025-09-16 16:21:55 UTC (44d 15h14m ago)
2025-09-16 18:21:55 CEST local time at Miłomłyn, Poland [?]
Altitude: 118 m
Course: 201°
Speed: 52 km/h
Device: Yaesu: FTM-300D (rig)
Last path: SP4I-9>US4V48 via qAR,SR4NWO
Positions stored: 10233
Other SSIDs: SP4I-FM SP4I-7
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