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 KJ4TDM-5 - show graphs
Location: 33°52.25' N 86°45.02' W - locator EM63OU98XX - show map
6.9 km East bearing 110° from Smoke Rise, Blount County, Alabama, United States [?]
8.3 km Northeast bearing 41° from Warrior, Jefferson County, Alabama, United States
39.2 km North bearing 7° from Birmingham, Jefferson County, Alabama, United States
96.7 km South bearing 189° from Huntsville, Madison County, Alabama, United States
Last position: 2025-01-27 04:15:59 UTC (33d 15h42m ago)
2025-01-26 22:15:59 CST local time at Smoke Rise, United States [?]
Altitude: 153 m
Device: Open Source: APRSdroid (app, Android)
Last path: KJ4TDM-5>APDR16 via TCPIP*,qAC,T2SPAIN
Positions stored: 758
Other SSIDs: KJ4TDM KJ4TDM-2 KJ4TDM-2-i KJ4TDM-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