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 KF0SMD-7 - show graphs
Comment: 444.210MHz KSUN ZL20
Location: 38°35.26' N 90°15.91' W - locator EM48UO81EA - show map
7.3 km Southwest bearing 233° from Saint Louis, City of Saint Louis, Missouri, United States [?]
10.5 km East bearing 83° from Oakland, Saint Louis County, Missouri, United States
10.7 km East bearing 71° from Crestwood, Saint Louis County, Missouri, United States
45.1 km Southeast bearing 123° from O'Fallon, Saint Charles County, Missouri, United States
Last position: 2025-07-10 22:12:18 UTC (6d 16h18m ago)
2025-07-10 17:12:18 CDT local time at Saint Louis, United States [?]
Altitude: 133 m
Course: 293°
Speed: 4 km/h
Device: Open Source: APRSdroid (app, Android)
Last path: KF0SMD-7>APDR16 via TCPIP*,qAC,T2SWEDEN
Positions stored: 3125
Other SSIDs: KF0SMD-5
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