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 K4MSU-11 - show graphs
Comment: 047TxC 6.70C 418.33hPa 4.54V 04S http://www.k4msu.com
Location: 36°13.18' N 87°57.58' W - locator EM66AF42UR - show map
17.7 km North bearing 358° from Johnsonville, Humphreys County, Tennessee, United States [?]
19.6 km Southwest bearing 238° from Tennessee Ridge, Houston County, Tennessee, United States
63.8 km Southwest bearing 237° from Clarksville, Montgomery County, Tennessee, United States
105.6 km West bearing 274° from Nashville, Davidson County, Tennessee, United States
Last position: 2022-06-26 00:34:09 UTC (340d 1h45m ago)
2022-06-25 19:34:09 CDT local time at Johnsonville, United States [?]
Altitude: 7233 m
Course: 129°
Speed: 39 km/h
Device: TA2MUN/TA9OHC: LightAPRS Tracker (tracker)
Last path: K4MSU-11>APLIGA via WIDE2-1,qAR,KO4JGR-2 (seriously-bad)
This station appears to be flying at high altitude and using digipeaters, which causes serious congestion in the APRS network. The tracker should be configured to only use digipeaters when at low altitude.
Positions stored: 69
Other SSIDs: K4MSU-5 K4MSU-3 K4MSU-4
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