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 W3KRZ-7 - show graphs
Location: 38°57.24' N 76°42.95' W - locator FM18PW48CX - show map
11.9 km West bearing 271° from Riva, Anne Arundel County, Maryland, United States [?]
14.6 km West bearing 279° from Londontowne, Anne Arundel County, Maryland, United States
28.5 km East bearing 77° from Washington, D. C., Washington, D.C., United States
38.4 km South bearing 193° from Baltimore, City of Baltimore, Maryland, United States
Last position: 2025-11-09 11:37:17 UTC (23d 8h23m ago)
2025-11-09 06:37:17 EST local time at Riva, United States [?]
Altitude: 50 m
Course: 61°
Speed: 65 km/h
Last path: W3KRZ-7>APN000 via N3KTX-1,WIDE1,K3ORB-10,TOMRVR,WIDE2,qAR,N2ARC (good)
Positions stored: 222
Other SSIDs: W3KRZ-4 W3KRZ-10 W3KRZ W3KRZ-10
Last heard a station directly: 2025-11-05 11:08:40 UTC (27d 8h52m ago)
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