Source callsign:	W9MKS-15
Comment:	440.05 MHz#T103 +500 R24m W9MKS/R UNF Test/R
Location:	41°11.45' N 88°58.93' W - locator EN51ME25DT - show map 12.4 km South bearing 159° from Deer Park, LaSalle County, Illinois, United States [?] 13.3 km Southeast bearing 151° from Oglesby, LaSalle County, Illinois, United States 83.9 km Southwest bearing 221° from Aurora, Kane County, Illinois, United States 132.8 km Southwest bearing 237° from Chicago, Cook County, Illinois, United States
Last position:	2026-01-27 19:18:11 UTC (2h22m ago) 2026-01-27 13:18:11 CST local time at Deer Park, United States [?]
Last path:	W9MKS-15>APN591 via qAR,KA9WRZ
Positions stored:	1
Others sourced by W9MKS-15:	147.12srr 440.05mks el-234725

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.