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 K9NJC-9 - show graphs
Comment: winlink
Location: 38°40.75' N 89°51.33' W - locator EM58BQ73IA - show map
6.1 km Southeast bearing 157° from Troy, Madison County, Illinois, United States [?]
10.0 km Southeast bearing 120° from Maryville, Madison County, Illinois, United States
30.3 km East bearing 79° from Saint Louis, City of Saint Louis, Missouri, United States
74.6 km East bearing 101° from O'Fallon, Saint Charles County, Missouri, United States
Last position: 2025-12-25 20:16:28 UTC (6d 12h58m ago)
2025-12-25 14:16:28 CST local time at Troy, United States [?]
Altitude: 140 m
Course: 97°
Speed: 4 km/h
Device: BTECH: UV-PRO (ht)
Last path: K9NJC-9>APBTUV via KC9WQZ-8*,WIDE2-2,qAR,N9NWI-1 (good)
Positions stored: 63
Other SSIDs: K9NJC K9NJC-10
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