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 M3TH-3 - show graphs
Location: 41°57.44' N 87°45.09' W - locator EN61CW99TS - show map
6.3 km East bearing 96° from Norridge, Cook County, Illinois, United States [?]
7.8 km Northeast bearing 63° from River Grove, Cook County, Illinois, United States
14.6 km Northwest bearing 325° from Chicago, Cook County, Illinois, United States
51.9 km Northeast bearing 65° from Aurora, Kane County, Illinois, United States
Last position: 2025-01-31 08:43:16 UTC (13d 17h38m ago)
2025-01-31 02:43:16 CST local time at Norridge, United States [?]
Last path: M3TH-3>APN000 via TCPIP*,qAC,T2QUEBEC
Positions stored: 1
Other SSIDs: M3TH-9
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