Station info - map view · info · telemetry · weather · raw · status · beacons · messages · bulletins · browse · moving · my account
Callsign, ship name or locator: Clear       
It is possible to search using wildcards (*?) after a prefix. Example: OH*
APRS station N3MXX - show graphs
Mic-E message: In service
Location: 38°59.95' N 77°23.38' W - locator FM18HX39FT - show map
4.8 km Southeast bearing 152° from Dulles Town Center, Loudoun County, Virginia, United States [?]
5.1 km Southeast bearing 156° from Countryside, Loudoun County, Virginia, United States
32.6 km West bearing 291° from Washington, D. C., Washington, D.C., United States
74.4 km Southwest bearing 244° from Baltimore, City of Baltimore, Maryland, United States
Last position: 2025-11-21 04:18:51 UTC (16d 14h15m ago)
2025-11-20 23:18:51 EST local time at Dulles Town Center, United States [?]
Course: 186°
Speed: 0 km/h
Device: Kenwood: TH-D75 (ht)
Last path: N3MXX>S8UY9U via WIDE1-1,WIDE2-1,qAO,W4TTU-10 (good)
Positions stored: 4
Other SSIDs: N3MXX-4 N3MXX-i
About this site
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.
User guide · FAQ · Blog · Discussion group · Linking to aprs.fi · AIS sites · Service status · Database statistics · Advertising on aprs.fi · Technical details · API · Change log · Planned changes · Credits and thanks · Terms Of Service · iPhone/iPad APRS