Source callsign:	KQ4PRD-S
Comment:	70cm Voice (D-Star) 438.80000MHz +0.0000MHz
Location:	38°59.00' N 77°31.97' W - locator FM18FX65BX - show map 7.4 km North bearing 340° from South Riding, Loudoun County, Virginia, United States [?] 13.2 km Northwest bearing 318° from Chantilly, Fairfax County, Virginia, United States 44.0 km West bearing 283° from Washington, D. C., Washington, D.C., United States 86.4 km Southwest bearing 247° from Baltimore, City of Baltimore, Maryland, United States
Last position:	2025-07-04 19:42:39 UTC (17m20s ago) 2025-07-04 15:42:39 EDT local time at South Riding, United States [?]
Altitude:	3 m
Last path:	KQ4PRD-S>APDG01 via TCPIP*,qAC,KQ4PRD-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.