Location:	38°36.95' N 77°15.61' W - locator FM18IO87ST - show map 4.5 km Southeast bearing 139° from Potomac Mills, Prince William County, Virginia, United States [?] 4.8 km South bearing 191° from Woodbridge, Prince William County, Virginia, United States 36.6 km Southwest bearing 212° from Washington, D. C., Washington, D.C., United States 93.6 km Southwest bearing 217° from Baltimore, City of Baltimore, Maryland, United States
Last position:	2025-11-16 17:33:00 UTC (20d 12h10m ago) 2025-11-16 12:33:00 EST local time at Potomac Mills, United States [?]
Altitude:	68 m
Device:	Icom: IC-5100 (D-Star)
Last path:	W4WMD>API510 via DSTAR*,qAR,WS4VA-C
Positions stored:	326

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.