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 K3MRK-9 - show graphs
Comment: K3MRK
Location: 39°41.96' N 83°56.37' W - locator EM89AQ77GU - show map
1.8 km Northwest bearing 332° from Xenia, Greene County, Ohio, United States [?]
13.3 km Northeast bearing 58° from Bellbrook, Greene County, Ohio, United States
74.4 km Northeast bearing 36° from Cincinnati, Hamilton County, Ohio, United States
85.4 km West bearing 250° from Columbus, Franklin County, Ohio, United States
Last position: 2025-05-17 17:53:58 UTC (19d 12h12m ago)
2025-05-17 13:53:58 EDT local time at Xenia, United States [?]
Altitude: 240 m
Course: 122°
Speed: 0 km/h
Last path: K3MRK-9>APAT81-1 via WIDE2-1,qAO,KD8NJV-10 (good)
Positions stored: 144
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