Source callsign:	DO4SEM-S
Comment:	70cm Voice (D-Star) 433.62500MHz +0.0000MHz
Location:	51°32.91' N 7°18.74' E - locator JO31PN71LP - show map 343.1 m Southwest bearing 241° from Castrop-Rauxel, North Rhine-Westphalia, Germany [?] 10.4 km Southeast bearing 155° from Oer-Erkenschwick, 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:	2025-07-11 17:54:38 UTC (2d 12h21m ago) 2025-07-11 19:54:38 CEST local time at Castrop-Rauxel, Germany [?]
Altitude:	3 m
Last path:	DO4SEM-S>APDG01 via TCPIP*,qAC,DO4SEM-GS
Positions stored:	2

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.