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 AD9BU-7 - show graphs
Location: 39°29.36' N 88°23.31' W - locator EM59TL37JK - show map
1.5 km Northwest bearing 297° from Mattoon, Coles County, Illinois, United States [?]
18.2 km West bearing 268° from Charleston, Coles County, Illinois, United States
70.8 km South bearing 190° from Champaign, Champaign County, Illinois, United States
112.9 km East bearing 108° from Springfield, Sangamon County, Illinois, United States
Last position: 2025-07-25 06:48:48 UTC (11d 10h20m ago)
2025-07-25 01:48:48 CDT local time at Mattoon, United States [?]
Course: 270°
Speed: 63 km/h
Last path: AD9BU-7>APN000 via KB9YEP-10,WIDE1,W9BIL,WIDE2*,qAR,W9IPA-11 (good)
Positions stored: 585
Other SSIDs: AD9BU-N AD9BU-B AD9BU AD9BU-9 AD9BU-1 AD9BU-Y AD9BU-10 AD9BU-4 AD9BU-2 AD9BU-5 AD9BU-C AD9BU-D
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