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 W3MGZ-9 - show graphs
Mic-E message: Off duty
Location: 39°10.83' N 77°16.25' W - locator FM19IE73MH - show map
7.3 km Northwest bearing 305° from Gaithersburg, Montgomery County, Maryland, United States [?]
11.8 km Northwest bearing 307° from Derwood, Montgomery County, Maryland, United States
37.6 km Northwest bearing 328° from Washington, D. C., Washington, D.C., United States
58.0 km West bearing 258° from Baltimore, City of Baltimore, Maryland, United States
Last position: 2025-12-03 23:41:54 UTC (29d 21h1m ago)
2025-12-03 18:41:54 EST local time at Gaithersburg, United States [?]
Altitude: 131 m
Course: 120°
Speed: 0 km/h
Device: Yaesu: FTM-300D (rig)
Last path: W3MGZ-9>SYQP8S via KV3B-1,WIDE1*,WIDE2-1,qAO,W4TTU-10 (good)
Positions stored: 75
Other SSIDs: W3MGZ-N W3MGZ-Y W3MGZ W3MGZ-7
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