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 SP4AV-5 - show graphs
Comment: 145.300MHz kf20.org
Location: 50°02.79' N 19°54.92' E - locator JO90WB91UD - show map
4.1 km South bearing 181° from Kraków, Lesser Poland Voivodeship, Poland [?]
8.3 km South bearing 183° from Zielonki, Powiat krakowski, Lesser Poland Voivodeship, Poland
67.5 km East bearing 110° from Katowice, Silesian Voivodeship, Poland
Last position: 2025-05-01 07:31:33 UTC (1d 13h14m ago)
2025-05-01 09:31:33 CEST local time at Kraków, Poland [?]
Altitude: 248 m
Course: 347°
Speed: 6 km/h
Device: Open Source: APRSdroid (app, Android)
Last path: SP4AV-5>APDR16 via TCPIP*,qAC,T2POLAND
Positions stored: 510
Other SSIDs: SP4AV-10 SP4AV SP4AV-N SP4AV-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