Station info - map view · info · telemetry · weather · raw · status · beacons · messages · bulletins · browse · moving · my account
Callsign, ship name or locator: Clear       
It is possible to search using wildcards (*?) after a prefix. Example: OH*
Web station KO4UOA - show graphs
Location: 39°05.25' N 78°17.65' W - locator FM09UC41QA - show map
6.8 km North bearing 350° from Middletown, Frederick County, Virginia, United States [?]
12.3 km Northeast bearing 27° from Strasburg, Shenandoah County, Virginia, United States
105.3 km West bearing 283° from Arlington, Arlington County, Virginia, United States
110.7 km West bearing 282° from Washington, D. C., Washington, D.C., United States
Last position: 2024-08-24 14:36:00 UTC (170d 6h22m ago)
2024-08-24 10:36:00 EDT local time at Middletown, United States [?]
Altitude: 261 m
Course: 113°
Speed: 0 km/h
Last path: KO4UOA>aprs.fi via aprsfi-iOS
Positions stored: 2499
Other SSIDs: KO4UOA-5
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.
User guide · FAQ · Blog · Discussion group · Linking to aprs.fi · AIS sites · Service status · Database statistics · Advertising on aprs.fi · Technical details · API · Change log · Planned changes · Credits and thanks · Terms Of Service · iPhone/iPad APRS