Location:	38°48.94' N 77°06.60' W - locator FM18KT65TS - show map 4.2 km Southeast bearing 156° from Baileys Crossroads, Fairfax County, Virginia, United States [?] 5.3 km Southeast bearing 132° from Lake Barcroft, Fairfax County, Virginia, United States 10.9 km Southwest bearing 216° from Washington, D. C., Washington, D.C., United States 68.0 km Southwest bearing 219° from Baltimore, City of Baltimore, Maryland, United States
Last position:	2025-08-03 09:49:15 UTC (28d 12h43m ago) 2025-08-03 05:49:15 EDT local time at Baileys Crossroads, United States [?]
Altitude:	41 m
Course:	283°
Speed:	31 km/h
Device:	Icom: IC-5100 (D-Star)
Last path:	KA4GFY-9>API510 via DSTAR*,qAR,NV4FM-C
Positions stored:	116
Other SSIDs:	KA4GFY-8

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.