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*
APRS station K9MST-3 - show graphs
Comment: CSDLoaner3 - V2024-05-24
Location: 39°18.36' N 76°47.10' W - locator FM19OH53TK - show map
4.4 km North bearing 15° from Ellicott City, Howard County, Maryland, United States [?]
4.8 km South bearing 196° from Milford Mill, Baltimore County, Maryland, United States
15.0 km West bearing 277° from Baltimore, City of Baltimore, Maryland, United States
50.5 km Northeast bearing 25° from Washington, D. C., Washington, D.C., United States
Last position: 2025-05-08 23:16:53 UTC (35d 15h12m ago)
2025-05-08 19:16:53 EDT local time at Ellicott City, United States [?]
Altitude: 93 m
Course: 260°
Speed: 0 km/h
Device: Anytone: AT-D878 (ht)
Last path: K9MST-3>APAT81 via N3KTX-1,WIDE1*,WIDE2-2,qAR,N2NWK (good)
Positions stored: 29
Other SSIDs: K9MST-12 K9MST-2 K9MST-5 K9MST-15 K9MST-13 K9MST-14 K9MST-1 K9MST-7 K9MST-4 K9MST-9 K9MST-6 K9MST-8 K9MST-10 K9MST
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