Location:	51°25.10' N 7°11.82' E - locator JO31OK30PJ - show map 9.4 km South bearing 171° from Bochum-Hordel, North Rhine-Westphalia, Germany [?] 13.0 km East bearing 106° from Essen, North Rhine-Westphalia, Germany 56.6 km North bearing 18° from Köln (Koeln), Regierungsbezirk Köln, North Rhine-Westphalia, Germany
Last position:	2025-11-01 15:47:53 UTC (3d 10h8m ago) 2025-11-01 16:47:53 CET local time at Bochum-Hordel, Germany [?]
Device:	Icom: IC-51 (D-Star)
Last path:	DO4SEM>API51 via DSTAR*,qAR,DB0BS-B
Positions stored:	73
Other SSIDs:	DO4SEM-B DO4SEM-N DO4SEM-R DO4SEM-D

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.