Location:	34°43.80' N 86°35.39' W - locator EM64QR95FE - show map 343.1 m West bearing 263° from Huntsville, Madison County, Alabama, United States [?] 7.4 km Northeast bearing 46° from Redstone Arsenal, Madison County, Alabama, United States 121.8 km West bearing 254° from Chattanooga, Hamilton County, Tennessee, United States
Last position:	2025-08-16 14:33:28 UTC (10d 20h12m ago) 2025-08-16 09:33:28 CDT local time at Huntsville, United States [?]
Altitude:	164 m
Speed:	2 km/h
Device:	Open Source: APRSdroid (app, Android)
Last path:	KJ4TDM-5>APDR16 via TCPIP*,qAC,T2PERTH
Positions stored:	899
Other SSIDs:	KJ4TDM KJ4TDM-7 KJ4TDM-2

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.