Location:	38°55.16' N 77°39.86' W - locator FM18EW00GP - show map 1.7 km North bearing 352° from Bull Run Mountain Estates, Prince William County, Virginia, United States [?] 13.9 km West bearing 269° from South Riding, Loudoun County, Virginia, United States 54.4 km West bearing 273° from Washington, D. C., Washington, D.C., United States 99.7 km Southwest bearing 246° from Baltimore, City of Baltimore, Maryland, United States
Last position:	2025-09-17 10:31:04 UTC (10m52s ago) 2025-09-17 06:31:04 EDT local time at Bull Run Mountain Estates, United States [?]
Last WX report:	2025-09-17 10:31:04 UTC (10m52s ago) – show weather charts 12.8 °C 98% 1020.3 mbar 0.9 m/s East
Device:	Unknown: Unknown
Last path:	cw7453>APRS via TCPXX*,qAX,CWOP-5
Positions stored:	5

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.