Location:	51°10.45' N 5°56.96' E - ตำแหน่ง JO21XE31WT - show map 4.9 km ตะวันตกเฉียงเหนือ bearing 314° มาจาก Sint Odiliënberg, Gemeente Roerdalen, Limburg, Netherlands [?] 5.4 km เหนือ bearing 1° มาจาก Montfort, Gemeente Roerdalen, Limburg, Netherlands 74.8 km ตะวันตก bearing 291° มาจาก Köln (Koeln), Regierungsbezirk Köln, North Rhine-Westphalia, Germany 117.5 km ตะวันออก bearing 72° มาจาก Brussels, (Bruxelles-Capitale), Brussels Capital Region, Belgium
Last position:	2025-06-16 17:16:03 UTC (1d 4h26m ago) 2025-06-16 19:16:03 CEST เวลาท้องถิ่น Sint Odiliënberg, Netherlands [?]
Last path:	PD4O-5>API52 via DSTAR*,qAR,PD4O-B
Positions stored:	131
Other SSIDs:	PD4O-B PD4O-N PD4O-Y PD4O-10 PD4O PD4O-9 PD4O-7

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.