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APRS station KM4MAR-9 - show graphs
Comment: & V-Alert
Mic-E message: Off duty
Location: 39°09.64' N 78°11.94' W - locator FM09VD68CN - show map
4.1 km Southwest bearing 228° from Winchester, City of Winchester, Virginia, United States [?]
8.7 km North bearing 11° from Stephens City, Frederick County, Virginia, United States
99.5 km West bearing 289° from Arlington, Arlington County, Virginia, United States
104.6 km West bearing 287° from Washington, D. C., Washington, D.C., United States
Last position: 2025-12-22 13:33:19 UTC (11d 22h53m ago)
2025-12-22 08:33:19 EST local time at Winchester, United States [?]
Altitude: 251 m
Course: 68°
Speed: 0 km/h
Device: Kenwood: TM-D710 (rig)
Last path: KM4MAR-9>SYPY6T via N3KTX-2*,N4CV-2*,WIDE1*,WIDE2-1,qAR,WC4J (good)
Positions stored: 54841
About this site
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.
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