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 WB3M - show graphs
Mic-E message: In service
Location: 40°07.10' N 77°12.02' W - locator FN10JC58XJ - show map
879.5 m West bearing 269° from Mount Holly Springs, Cumberland County, Pennsylvania, United States [?]
7.0 km Southwest bearing 240° from Boiling Springs, Cumberland County, Pennsylvania, United States
102.3 km North bearing 343° from Columbia, Howard County, Maryland, United States
104.8 km Northwest bearing 332° from Baltimore, City of Baltimore, Maryland, United States
Last position: 2025-11-23 21:23:02 UTC (14d 6h9m ago)
2025-11-23 16:23:02 EST local time at Mount Holly Springs, United States [?]
Altitude: 173 m
Course: 341°
Speed: 41 km/h
Device: Yaesu: FTM-300D (rig)
Last path: WB3M>T0PW1P via qAR,N3TJJ-8
Positions stored: 83
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