Source callsign:	W9DUA-S
Comment:	440 Voice 443.78125 +5.00 MHz
Location:	39°48.36' N 89°38.70' W - ตำแหน่ง EM59ET23OK - show map 488.2 m เหนือ bearing 347° มาจาก Springfield, Sangamon County, Illinois, United States [?] 2.5 km ตะวันตกเฉียงใต้ bearing 243° มาจาก Grandview, Sangamon County, Illinois, United States 98.8 km ใต้ bearing 183° มาจาก Peoria, Peoria County, Illinois, United States
Last position:	2025-06-06 12:05:47 UTC (6m54s ago) 2025-06-06 07:05:47 CDT เวลาท้องถิ่น Springfield, United States [?]
Last path:	W9DUA-S>APJIO4 via TCPIP*,qAC,W9DUA-GS
Positions stored:	6

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.