Location:	51°32.91' N 7°18.73' E - locator JO31PN71LP - show map 10.4 km Southeast bearing 155° from Oer-Erkenschwick, North Rhine-Westphalia, Germany [?] 11.2 km Southwest bearing 213° from Waltrop, North Rhine-Westphalia, Germany 23.2 km Northeast bearing 62° from Essen, North Rhine-Westphalia, Germany 72.9 km North bearing 20° from Köln (Koeln), Regierungsbezirk Köln, North Rhine-Westphalia, Germany
Last position:	2025-06-29 10:32:02 UTC (4d 20h40m ago) 2025-06-29 12:32:02 CEST local time at Oer-Erkenschwick, Germany [?]
Device:	Icom: IC-51 (D-Star)
Last path:	DO4SEM>API51 via DSTAR*,qAR,DB0BS-B
Positions stored:	2
Other SSIDs:	DO4SEM-D DO4SEM-B DO4SEM-N

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.