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*
Web station DO3DCF-4 - show graphs
Comment: aprs.fi for iOS
Location: 51°35.70' N 7°19.40' E - locator JO31PO82TT - show map
5.0 km North bearing 5° from Castrop-Rauxel, North Rhine-Westphalia, Germany [?]
6.6 km Southeast bearing 130° from Oer-Erkenschwick, North Rhine-Westphalia, Germany
26.6 km Northeast bearing 53° from Essen, North Rhine-Westphalia, Germany
78.0 km North bearing 19° from Köln (Koeln), Regierungsbezirk Köln, North Rhine-Westphalia, Germany
Last position: 2025-07-19 06:39:57 UTC (1d 10h41m ago)
2025-07-19 08:39:57 CEST local time at Castrop-Rauxel, Germany [?]
Altitude: 51 m
Position ambiguous: Precision reduced at transmitter by 1 digits, position resolution approximately 185.0 m.
Speed: 0 km/h
Last path: DO3DCF-4>aprs.fi via aprsfi-iOS
Positions stored: 473
Other SSIDs: DO3DCF DO3DCF-7 DO3DCF-Y DO3DCF-D
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