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APRS station W4TTU-9 - show graphs
Comment: /TinyTrak4 Alpha
Mic-E message: Off duty
Location: 39°02.46' N 77°22.66' W - locator FM19HA49QU - show map
5.9 km Northeast bearing 49° from Sterling, Loudoun County, Virginia, United States [?]
6.7 km North bearing 20° from Oak Grove, Loudoun County, Virginia, United States
33.6 km Northwest bearing 299° from Washington, D. C., Washington, D.C., United States
71.5 km Southwest bearing 247° from Baltimore, City of Baltimore, Maryland, United States
Last position: 2025-12-13 21:08:08 UTC (23d 4h9m ago)
2025-12-13 16:08:08 EST local time at Sterling, United States [?]
Altitude: 90 m
Course: 73°
Speed: 28 km/h
Last path: W4TTU-9>SYPR4V via WIDE1-1,WIDE2-1,qAO,W4TTU-10 (good)
Positions stored: 63080
Other SSIDs: W4TTU-10 W4TTU-2 W4TTU-1 W4TTU-7 W4TTU-11 W4TTU
Last heard a station directly: 2025-07-11 17:31:35 UTC (178d 7h46m ago)
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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