Comment:	146.520MHz listening
Mic-E message:	In service
Location:	38°56.05' N 77°23.76' W - locator FM18HW24LE - show map 1.0 km Northeast bearing 27° from Oak Hill, Fairfax County, Virginia, United States [?] 5.4 km Northeast bearing 34° from Chantilly, Fairfax County, Virginia, United States 31.4 km West bearing 278° from Washington, D. C., Washington, D.C., United States 78.3 km Southwest bearing 240° from Baltimore, City of Baltimore, Maryland, United States
Last position:	2025-08-30 17:22:26 UTC (1d 22h6m ago) 2025-08-30 13:22:26 EDT local time at Oak Hill, United States [?]
Altitude:	116 m
Course:	344°
Speed:	0 km/h
Device:	Yaesu: FTM-400DR (rig)
Last path:	W4MRW-9>S8UV0U via N4CV-2,WIDE1*,qAR,W4VA-13
Positions stored:	704
Other SSIDs:	W4MRW-i

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.