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 KM4HRR-9 - show graphs
Comment: de Brendan KM4HRR-9
Mic-E message: In service
Location: 38°56.26' N 77°19.56' W - locator FM18IW05VA - show map
6.3 km Southeast bearing 124° from Herndon, Fairfax County, Virginia, United States [?]
6.7 km East bearing 79° from Oak Hill, Fairfax County, Virginia, United States
25.5 km West bearing 281° from Washington, D. C., Washington, D.C., United States
73.0 km Southwest bearing 238° from Baltimore, City of Baltimore, Maryland, United States
Last position: 2025-01-03 16:58:39 UTC (40d 5h11m ago)
2025-01-03 11:58:39 EST local time at Herndon, United States [?]
Altitude: 112 m
Course: 156°
Speed: 0 km/h
Device: Kenwood: TM-D710 (rig)
Last path: KM4HRR-9>S8UV2V via WIDE1-1,WIDE2-1,qAO,W4TTU-10 (good)
Positions stored: 18118
Other SSIDs: KM4HRR-7 KM4HRR KM4HRR-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