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 KB3CJJ - show graphs
Mic-E message: In service
Location: 38°55.68' N 77°23.53' W - locator FM18HW22WR - show map
4.6 km South bearing 186° from Herndon, Fairfax County, Virginia, United States [?]
6.3 km Southwest bearing 224° from Reston, Fairfax County, Virginia, United States
31.0 km West bearing 277° from Washington, D. C., Washington, D.C., United States
78.4 km Southwest bearing 239° from Baltimore, City of Baltimore, Maryland, United States
Last position: 2025-12-20 19:49:58 UTC (23d 20h21m ago)
2025-12-20 14:49:58 EST local time at Herndon, United States [?]
Altitude: 112 m
Course: 30°
Speed: 94 km/h
Device: Kenwood: TM-D700 (rig)
Last path: KB3CJJ>S8UU6X via N4CV-2*,WIDE1*,WIDE2-1,qAR,WC4J (good)
Positions stored: 20126
Other SSIDs: KB3CJJ-1 KB3CJJ-i
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