Location:	38°51.52' N 77°19.83' W - locator FM18IU06IB - show map 6.3 km East bearing 105° from Greenbriar, Fairfax County, Virginia, United States [?] 8.8 km East bearing 77° from Centreville, Fairfax County, Virginia, United States 25.8 km West bearing 261° from Washington, D. C., Washington, D.C., United States 78.4 km Southwest bearing 232° from Baltimore, City of Baltimore, Maryland, United States
Last position:	2025-12-09 23:05:15 UTC (4m29s ago) 2025-12-09 18:05:15 EST local time at Greenbriar, United States [?]
Last WX report:	2025-12-09 23:00:42 UTC (9m2s ago) – show weather charts -1.1 °C 61% 1017.7 mbar 1.8 m/s Northeast
Device:	Unknown: Unknown
Last path:	GW4289>APRS via TCPXX*,qAX,CWOP-3
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.