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 KK4UWF-9 - show graphs
Comment: KK4UWF
Location: 34°44.62' N 86°30.68' W - locator EM64RR88PL - show map
7.0 km East bearing 78° from Huntsville, Madison County, Alabama, United States [?]
14.1 km Northeast bearing 62° from Redstone Arsenal, Madison County, Alabama, United States
114.5 km West bearing 253° from Chattanooga, Hamilton County, Tennessee, United States
Last position: 2025-08-16 22:39:36 UTC (15d 12h4m ago)
2025-08-16 17:39:36 CDT local time at Huntsville, United States [?]
Course: 151°
Speed: 0 km/h
Device: aprs.fi: iPhone/iPad app (app, ios)
Last path: KK4UWF-9>APFII0 via WIDE1-1,WIDE2-1,qAR,N8DEU-7 (good)
Positions stored: 29
Other SSIDs: KK4UWF-i
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