Comment:	aprs.fi iOS
Location:	38°44.43' N 77°29.14' W - locator FM18GR17RQ - show map 5.7 km Southeast bearing 148° from Bull Run, Prince William County, Virginia, United States [?] 8.0 km East bearing 106° from Linton Hall, Prince William County, Virginia, United States 42.5 km Southwest bearing 246° from Washington, D. C., Washington, D.C., United States 97.1 km Southwest bearing 231° from Baltimore, City of Baltimore, Maryland, United States
Last position:	2025-12-17 03:34:15 UTC (12d 9h19m ago) 2025-12-16 22:34:15 EST local time at Bull Run, United States [?]
Altitude:	82 m
Course:	182°
Speed:	4 km/h
Last path:	>aprs.fi via aprsfi-iOS
Positions stored:	5621
Other SSIDs:	K5MDM-10

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.