Location:	38°51.52' N 77°41.68' W - locator FM18DU66PB - show map 5.8 km Southwest bearing 210° from Bull Run Mountain Estates, Prince William County, Virginia, United States [?] 7.2 km Northwest bearing 316° from Haymarket, Prince William County, Virginia, United States 57.1 km West bearing 266° from Washington, D. C., Washington, D.C., United States 105.0 km Southwest bearing 243° from Baltimore, City of Baltimore, Maryland, United States
Last position:	2026-01-12 02:50:57 UTC (4m21s ago) 2026-01-11 21:50:57 EST local time at Bull Run Mountain Estates, United States [?]
Last WX report:	2026-01-12 02:50:57 UTC (4m21s ago) – show weather charts -1.1 °C 62% 1021.3 mbar 4.9 m/s Northwest
Device:	Unknown: Unknown
Last path:	FW9133>APRS via TCPXX*,qAX,CWOP-4
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.