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 W3MRB-4 - show graphs
Comment: aprs.fi ios transmitting my run
Location: 35°19.60' N 80°45.72' W - locator EM95OH88NJ - show map
9.6 km West bearing 272° from Harrisburg, Cabarrus County, North Carolina, United States [?]
13.3 km Northeast bearing 34° from Charlotte, Mecklenburg County, North Carolina, United States
18.9 km Southwest bearing 241° from Concord, Cabarrus County, North Carolina, United States
120.6 km Southwest bearing 227° from Greensboro, Guilford County, North Carolina, United States
Last position: 2025-10-21 12:58:31 UTC (49d 4h10m ago)
2025-10-21 08:58:31 EDT local time at Harrisburg, United States [?]
Altitude: 193 m
Course: 304°
Speed: 5 km/h
Last path: W3MRB-4>aprs.fi via aprsfi-iOS
Positions stored: 102
Other SSIDs: W3MRB-9 W3MRB-i W3MRB-10
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