Comment:	Mobile
Location:	38°51.77' N 77°05.67' W - locator FM18KU87PB - show map 6.2 km Southwest bearing 235° from Washington, D. C., Washington, D.C., United States [?] 7.6 km Northwest bearing 327° from Alexandria, City of Alexandria, Virginia, United States 8.1 km North bearing 345° from Huntington, Fairfax County, Virginia, United States 63.2 km Southwest bearing 221° from Baltimore, City of Baltimore, Maryland, United States
Last position:	2025-07-24 00:27:46 UTC (16d 2h49m ago) 2025-07-23 20:27:46 EDT local time at Washington, D. C., United States [?]
Altitude:	71 m
Last path:	W4JJ-7>API52 via DSTAR*,qAR,W4HFH-C
Positions stored:	9
Other SSIDs:	W4JJ-9 W4JJ-D W4JJ W4JJ-N W4JJ-B W4JJ-C

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.