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 K9CMB - show graphs
Location: 41°31.22' N 87°59.50' W - locator EN61AM04XV - show map
7.5 km East bearing 94° from Joliet, Will County, Illinois, United States [?]
10.3 km East bearing 81° from Rockdale, Will County, Illinois, United States
38.2 km Southeast bearing 134° from Aurora, Kane County, Illinois, United States
46.3 km Southwest bearing 218° from Chicago, Cook County, Illinois, United States
Last position: 2025-05-27 17:22:38 UTC (26d 2h25m ago)
2025-05-27 12:22:38 CDT local time at Joliet, United States [?]
Course: 202°
Speed: 89 km/h
Device: BTECH: UV-PRO (ht)
Last path: K9CMB>APBTUV via W9AZ-2,W9AZ-1,WIDE2*,qAR,KX9A-1 (good)
Positions stored: 179
Other SSIDs: K9CMB-14 K9CMB-14 K9CMB-13 K9CMB-13 K9CMB-i
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