Location:	38°51.80' N 77°18.62' W - locator FM18IU27SE - show map 7.9 km East bearing 98° from Greenbriar, Fairfax County, Virginia, United States [?] 10.6 km East bearing 76° from Centreville, Fairfax County, Virginia, United States 24.0 km West bearing 262° from Washington, D. C., Washington, D.C., United States 76.7 km Southwest bearing 232° from Baltimore, City of Baltimore, Maryland, United States
Last position:	2025-12-10 08:31:59 UTC (1m28s ago) 2025-12-10 03:31:59 EST local time at Greenbriar, United States [?]
Last WX report:	2025-12-10 08:31:59 UTC (1m28s ago) – show weather charts -1.1 °C 77% 1008.9 mbar 0.0 m/s South
Device:	Unknown: Unknown
Last path:	DW4092>APRS via TCPXX*,qAX,CWOP-4
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.