Comment:	aprs.fi for iOS
Location:	38°52.85' N 77°13.92' W - locator FM18JV21DJ - show map 1.7 km Southwest bearing 212° from Dunn Loring, Fairfax County, Virginia, United States [?] 2.4 km Southwest bearing 228° from Idylwood, Fairfax County, Virginia, United States 17.0 km West bearing 265° from Washington, D. C., Washington, D.C., United States 70.2 km Southwest bearing 230° from Baltimore, City of Baltimore, Maryland, United States
Last position:	2025-09-20 10:29:35 UTC (1h21m ago) 2025-09-20 06:29:35 EDT local time at Dunn Loring, United States [?]
Altitude:	118 m
Course:	44°
Speed:	5 km/h
Last path:	KZ4IK-4>aprs.fi via aprsfi-iOS
Positions stored:	433
Other SSIDs:	KZ4IK-10 KZ4IK-7 KZ4IK-9 KZ4IK-8 KZ4IK-11 KZ4IK-5 KZ4IK-N KZ4IK-Y KZ4IK-3

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.