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 KO4CPR-9 - show graphs
Mic-E message: In service
Location: 36°00.25' N 84°19.07' W - locator EM76UA11UA - show map
2.7 miles West bearing 261° from Oak Ridge, Anderson County, Tennessee, United States [?]
12.4 miles Southwest bearing 237° from Clinton, Anderson County, Tennessee, United States
22.4 miles West bearing 278° from Knoxville, Knox County, Tennessee, United States
86.5 miles Northeast bearing 40° from Chattanooga, Hamilton County, Tennessee, United States
Last position: 2025-01-12 10:05:36 EST (20d 10h20m ago)
2025-01-12 10:05:36 EST local time at Oak Ridge, United States [?]
Altitude: 981 ft
Course: 339°
Speed: 4 MPH
Device: Yaesu: FTM-400DR (rig)
Last path: KO4CPR-9>S6PP2U via WE4MB-3,WIDE1*,WIDE2-1,qAR,AK4ZX-10 (good)
Positions stored: 1651
Stations near current position of KO4CPR-9 - show more
callsign distance last heard - EST      callsign distance last heard - EST
W4AJP-93.6 miles 65°2025-01-06 10:59:46 WX4TEN-93.6 miles 87°2025-01-25 13:06:58
FW77495.9 miles 77°2025-02-01 20:25:43 KK4PAL-97.8 miles 298°2025-02-01 09:35:52
FW57508.1 miles 135°2025-02-01 20:25:52 DW34359.5 miles 38°2025-02-01 20:15:10
KQ4NPV-1010.3 miles 68°2025-01-17 03:08:57 KQ4ODY B10.4 miles 107°2025-02-01 20:13:01
KQ4ODY-B10.4 miles 107°2025-02-01 20:13:01 W8BUG10.6 miles 111°2025-02-01 20:22:03
FW700711.0 miles 175°2025-02-01 20:22:21 W4FXD11.5 miles 93°2025-02-01 20:24:27
KD9IKR-111.5 miles 119°2025-01-17 13:50:16 KM4OO-912.3 miles 170°2025-02-01 11:20:18
K4UAE-912.9 miles 86°2025-01-31 06:23:14 K4UAE-212.9 miles 86°2025-01-18 08:09:20
KO4HHU B12.9 miles 141°2025-02-01 20:11:17 KO4HHU-B12.9 miles 141°2025-02-01 20:11:27
KO4HHU-N12.9 miles 141°2025-02-01 19:20:27 KO4HHU-913.0 miles 141°2025-01-29 20:14:06
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