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 K8ESR-7 - show graphs
Comment: TH-D75
Mic-E message: In service
Location: 39°23.33' N 77°16.37' W - locator FM19IJ73GH - show map
10.2 km West bearing 278° from Mount Airy, Carroll County, Maryland, United States [?]
12.6 km Northwest bearing 332° from Damascus, Montgomery County, Maryland, United States
57.8 km West bearing 281° from Baltimore, City of Baltimore, Maryland, United States
58.5 km North bearing 340° from Washington, D. C., Washington, D.C., United States
Last position: 2025-09-25 17:33:58 UTC (24d 19h33m ago)
2025-09-25 13:33:58 EDT local time at Mount Airy, United States [?]
Altitude: 150 m
Course:
Speed: 0 km/h
Device: Kenwood: TH-D75 (ht)
Last path: K8ESR-7>S9RS3S via TCPIP*,qAR,HP1LDF-12
Positions stored: 204
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