Location:	37°53.83' N 85°58.57' W - locator EM77AV25UH - show map 1.3 km Northwest bearing 301° from Fort Knox, Hardin County, Kentucky, United States [?] 6.7 km North bearing 339° from Radcliff, Hardin County, Kentucky, United States 44.0 km Southwest bearing 206° from Louisville, Jefferson County, Kentucky, United States 108.9 km North bearing 22° from Bowling Green, Warren County, Kentucky, United States
Last position:	2025-10-20 10:47:37 UTC (3d 18h13m ago) 2025-10-20 06:47:37 EDT local time at Fort Knox, United States [?]
Course:	339°
Speed:	89 km/h
Device:	Icom: IC-5100 (D-Star)
Last path:	KN4ZIR-9>API510 via DSTAR*,qAR,N4TNS-C
Positions stored:	521
Other SSIDs:	KN4ZIR-D KN4ZIR-7 KN4ZIR-5 KN4ZIR-10

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.