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 KD9RDO-4 - show graphs
Comment: TNC4
Location: 39°28.79' N 88°22.27' W - locator EM59TL55LD - show map
396.4 m South bearing 159° from Mattoon, Coles County, Illinois, United States [?]
16.8 km West bearing 264° from Charleston, Coles County, Illinois, United States
71.6 km South bearing 189° from Champaign, Champaign County, Illinois, United States
114.6 km East bearing 108° from Springfield, Sangamon County, Illinois, United States
Last position: 2024-12-14 01:25:56 UTC (58d 7h4m ago)
2024-12-13 19:25:56 CST local time at Mattoon, United States [?]
Course: 180°
Speed: 48 km/h
Device: aprs.fi: iPhone/iPad app (app, ios)
Last path: KD9RDO-4>APFII0 via WIDE1-1,WIDE2-1,qAR,KC8RFE-3 (good)
Positions stored: 151
Other SSIDs: KD9RDO-10 KD9RDO-1 KD9RDO-8 KD9RDO-9 KD9RDO-7 KD9RDO-15 KD9RDO-5 KD9RDO-15 KD9RDO-i KD9RDO-12 KD9RDO
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