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 KK4LYY-9 - show graphs
Mic-E message: In service
Location: 38°47.95' N 77°11.46' W - locator FM18JT71BT - show map
4.7 km Southwest bearing 243° from Lincolnia, Fairfax County, Virginia, United States [?]
6.2 km Southwest bearing 209° from Lake Barcroft, Fairfax County, Virginia, United States
17.1 km Southwest bearing 232° from Washington, D. C., Washington, D.C., United States
74.0 km Southwest bearing 223° from Baltimore, City of Baltimore, Maryland, United States
Last position: 2025-08-05 13:33:51 UTC (5d 5h7m ago)
2025-08-05 09:33:51 EDT local time at Lincolnia, United States [?]
Altitude: 117 m
Course: 180°
Speed: 41 km/h
Device: Yaesu: FTM-510D (rig)
Last path: KK4LYY-9>S8TW9U via WIDE1-1,WIDE2-1,qAO,EDSALL-10 (good)
Positions stored: 371
Other SSIDs: KK4LYY KK4LYY-13 KK4LYY-N KK4LYY-5 KK4LYY-7 KK4LYY-12 KK4LYY-15 KK4LYY
Last heard a station directly: 2025-07-17 17:36:59 UTC (24d 1h3m ago)
Stations which heard KK4LYY-9 directly on radio –
callsign pkts first heard - UTC last heard longest (tx => rx) longest at - UTC

Only position packets which were originated by the station 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