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 KM4YJO-7 - show graphs
Location: 38°47.26' N 77°31.04' W - locator FM18FS79WA - show map
1.8 km West bearing 251° from Sudley, Prince William County, Virginia, United States [?]
3.4 km West bearing 273° from Loch Lomond, Prince William County, Virginia, United States
43.3 km West bearing 254° from Washington, D. C., Washington, D.C., United States
96.0 km Southwest bearing 235° from Baltimore, City of Baltimore, Maryland, United States
Last position: 2024-06-02 18:05:55 UTC (43d 6h48m ago)
2024-06-02 14:05:55 EDT local time at Sudley, United States [?]
Altitude: 46 m
Device: Open Source: APRSdroid (app, Android)
Last path: KM4YJO-7>APDR16 via WIDE1-1,WIDE2-1,qAR,WC4J (good)
Positions stored: 3
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 · AIS sites · Service status · Database statistics · Advertising on · Technical details · API · Change log · Planned changes · Credits and thanks · Terms Of Service · iPhone/iPad APRS