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*
Web station KR4KS-4 - show graphs
Comment: aprs.fi for iOS
Location: 38°56.33' N 84°40.01' W - locator EM78PW95XH - show map
1.4 km Southeast bearing 124° from Union, Boone County, Kentucky, United States [?]
7.0 km South bearing 167° from Oakbrook, Boone County, Kentucky, United States
30.7 km Southwest bearing 216° from Cincinnati, Hamilton County, Ohio, United States
100.4 km North bearing 350° from Lexington-Fayette, Fayette County, Kentucky, United States
Last position: 2025-12-28 17:17:27 UTC (2d 8h42m ago)
2025-12-28 12:17:27 EST local time at Union, United States [?]
Speed: 0 km/h
Last path: KR4KS-4>aprs.fi via aprsfi-iOS
Positions stored: 3
Other SSIDs: KR4KS-2
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