Comment:	Mobile
Location:	38°51.76' N 77°05.67' W - locator FM18KU87PA - show map 6.2 km Southwest bearing 234° from Washington, D. C., Washington, D.C., United States [?] 8.1 km North bearing 345° from Huntington, Fairfax County, Virginia, United States 9.0 km North bearing 342° from Belle Haven, Fairfax County, Virginia, United States 63.2 km Southwest bearing 221° from Baltimore, City of Baltimore, Maryland, United States
Last position:	2025-09-04 00:18:47 UTC (96d 4h26m ago) 2025-09-03 20:18:47 EDT local time at Washington, D. C., United States [?]
Altitude:	73 m
Last path:	W4JJ-7>API52 via DSTAR*,qAR,W4HFH-C
Positions stored:	14
Other SSIDs:	W4JJ-9 W4JJ-D W4JJ W4JJ-N W4JJ-B

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.