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 KB9YDG-7 - show graphs
Comment: kb9ydg
Location: 43°00.29' N 88°05.60' W - locator EN53WA81TD - show map
6.3 km South bearing 170° from Brookfield, Waukesha County, Wisconsin, United States [?]
11.4 km South bearing 190° from Butler, Waukesha County, Wisconsin, United States
15.6 km West bearing 256° from Milwaukee, Milwaukee County, Wisconsin, United States
106.5 km East bearing 94° from Madison, Dane County, Wisconsin, United States
Last position: 2025-04-02 22:55:36 UTC (36d 7h33m ago)
2025-04-02 17:55:36 CDT local time at Brookfield, United States [?]
Altitude: 226 m
Device: Open Source: APRSdroid (app, Android)
Last path: KB9YDG-7>APDR16 via KB9KBK-1*,WIDE1*,WIDE2-1,qAR,W9CQO-1 (good)
Positions stored: 2
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