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 KB9SFF-9 - show graphs
Comment: HELLO FROM KB9SFF 0N FTM-500DR
Mic-E message: En route
Location: 43°07.81' N 88°03.85' W - locator EN53XD21HF - show map
2.7 km North bearing 9° from Butler, Waukesha County, Wisconsin, United States [?]
8.5 km Northeast bearing 24° from Brookfield, Waukesha County, Wisconsin, United States
16.3 km Northwest bearing 308° from Milwaukee, Milwaukee County, Wisconsin, United States
108.7 km East bearing 86° from Madison, Dane County, Wisconsin, United States
Last position: 2025-07-31 20:15:20 UTC (42m11s ago)
2025-07-31 15:15:20 CDT local time at Butler, United States [?]
Altitude: 196 m
Course: 260°
Speed: 6 km/h
Device: Yaesu: FTM-500D (rig)
Last path: KB9SFF-9>TS0W8Q via qAR,WI9HRO-1
Positions stored: 22659
Other SSIDs: KB9SFF-ios KB9SFF-7
Stations which heard KB9SFF-9 directly on radio –
callsign pkts first heard - UTC last heard longest (tx => rx) longest at - UTC

Only position packets which were originated by the station are shown here. The range statistics show some extra long hops, because some digipeaters do not correctly add themselves to the digipeater path. Please check the raw packets.
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