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Web station KR4EDQ-4 - show graphs
Comment: aprs.fi for iOS
Location: 39°04.86' N 78°12.89' W - locator FM09VB49FK - show map
389.9 m Southeast bearing 135° from Stephens City, Frederick County, Virginia, United States [?]
8.2 km Northeast bearing 44° from Middletown, Frederick County, Virginia, United States
98.5 km West bearing 283° from Arlington, Arlington County, Virginia, United States
103.9 km West bearing 282° from Washington, D. C., Washington, D.C., United States
Last position: 2025-10-20 18:27:51 UTC (2d 3h55m ago)
2025-10-20 14:27:51 EDT local time at Stephens City, United States [?]
Course: 271°
Speed: 7 km/h
Last path: KR4EDQ-4>aprs.fi via aprsfi-iOS
Positions stored: 164
Other SSIDs: KR4EDQ KR4EDQ-D KR4EDQ-9 KR4EDQ-7 KR4EDQ KR4EDQ-10 KR4EDQ-i
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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