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 WC4J-16 - show graphs
Map loading...
Comment: APRS-IS for Win32
Location: 38°47.51' N 77°31.80' W - locator FM18FT60JA - show map - static map
1.2 km Northwest bearing 318° from Bull Run, Prince William County, Virginia, United States [?]
2.8 km West bearing 268° from Sudley, Prince William County, Virginia, United States
44.2 km West bearing 255° from Washington, D. C., Washington, D.C., United States
96.7 km Southwest bearing 235° from Baltimore, City of Baltimore, Maryland, United States
Last position: 2022-04-20 20:08:55 UTC (114d 3h22m ago)
2022-04-20 16:08:55 EDT local time at Bull Run, United States [?]
Device: KJ4ERJ: APRSIS32 (software, Windows)
Last path: WC4J-16>APWW11 via TCPIP*,qAC,T2USANW
Positions stored: 1
Other SSIDs: WC4J-10 WC4J-2 WC4J-3 WC4J-6 WC4J-14
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