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 N9UUP - show graphs
Comment: SharkRF openSPOT4
Location: 43°06.59' N 88°29.34' W - locator EN53SC16HI - show map
4.2 km West bearing 249° from Okauchee Lake, Waukesha County, Wisconsin, United States [?]
7.2 km West bearing 281° from Nashotah, Waukesha County, Wisconsin, United States
47.9 km West bearing 280° from Milwaukee, Milwaukee County, Wisconsin, United States
74.1 km East bearing 87° from Madison, Dane County, Wisconsin, United States
Last position: 2025-07-24 00:55:35 UTC (28d 58m ago)
2025-07-23 19:55:35 CDT local time at Okauchee Lake, United States [?]
Altitude: 0 m
Device: SharkRF: openSPOT4 (gadget)
Last path: N9UUP>APOSB4 via TCPIP*,qAC,T2CHILE
Positions stored: 113
Other SSIDs: N9UUP-1 N9UUP-7 N9UUP-9 N9UUP-H N9UUP-3 N9UUP-4 N9UUP-C
Last heard a station directly: 2025-07-05 15:21:31 UTC (46d 10h32m 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