Source callsign:	OT4R-S
Comment:	70cm Voice (D-Star) 439.67500MHz -7.6000MHz
Location:	51°06.00' N 4°04.80' E - locator JO21AC94OA - show map 8.5 km Southwest bearing 212° from Sint-Niklaas, Provincie Oost-Vlaanderen, Flanders, Belgium [?] 13.6 km South bearing 193° from Sint-Gillis-Waas, Provincie Oost-Vlaanderen, Flanders, Belgium 33.5 km Northwest bearing 326° from Brussels, (Bruxelles-Capitale), Brussels Capital Region, Belgium 95.5 km South bearing 197° from Rotterdam, Gemeente Rotterdam, South Holland, Netherlands
Last position:	2025-12-21 13:03:36 UTC (1d 12h29m ago) 2025-12-21 14:03:36 CET local time at Sint-Niklaas, Belgium [?]
Altitude:	3 m
Last path:	OT4R-S>APDG01 via TCPIP*,qAC,OT4R-GS
Positions stored:	1

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.