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-2 - show graphs
Map loading...
Comment: WC4J 6M APRS
Location: 38°47.70' N 77°31.46' W - locator FM18FT70BT - show map - static map
1.3 km North bearing 345° from Bull Run, Prince William County, Virginia, United States [?]
2.3 km West bearing 276° from Sudley, Prince William County, Virginia, United States
43.7 km West bearing 255° from Washington, D. C., Washington, D.C., United States
96.1 km Southwest bearing 235° from Baltimore, City of Baltimore, Maryland, United States
Last position: 2022-08-02 22:47:49 UTC (10d 34m ago)
2022-08-02 18:47:49 EDT local time at Bull Run, United States [?]
Device: KJ4ERJ: APRSIS32 (software, Windows)
Last path: WC4J-2>APWW11 via TCPIP*,qAC,T2ROMANIA
Positions stored: 11
Other SSIDs: WC4J-10 WC4J-3 WC4J-6 WC4J-14 WC4J-16
APRS igate – Statistics for 2022-08:
Stations heard directly: 1 on radio path – show map
Last heard a station directly: 2022-08-02 22:43:06 UTC (10d 39m ago)
Normal receiver range estimate: 10 km (Updated: 2022-05-31 23:52:47 UTC)
Position packets heard directly: 149 on radio path
Position packets sent to APRS-IS: 149 – show map
Stations heard directly by WC4J-2
callsign pkts first heard - UTC last heard longest (rx => tx) longest at - UTC

Only stations from which a position packet has been heard are shown here. The range statistics show some extra long hops, because some digipeaters do not correctly add themselves to the digipeater path. Please check the raw packets.
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