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*
Web station KG4MBU-1 - show graphs
Comment: aprs.fi for iOS
Location: 37°07.50' N 122°07.90' W - locator CM87WD40EA - show map
848.1 m West bearing 262° from Boulder Creek, Santa Cruz County, California, United States [?]
3.1 km Northwest bearing 312° from Brookdale, Santa Cruz County, California, United States
31.7 km Southwest bearing 221° from San Jose, Santa Clara County, California, United States
76.6 km South bearing 161° from San Francisco, San Francisco County, California, United States
Last position: 2025-02-23 23:31:40 UTC (5d 10h40m ago)
2025-02-23 15:31:40 PST local time at Boulder Creek, United States [?]
Altitude: 206 m
Position ambiguous: Precision reduced at transmitter by 1 digits, position resolution approximately 185.0 m.
Speed: 0 km/h
Last path: KG4MBU-1>aprs.fi via aprsfi-iOS
Positions stored: 1
Other SSIDs: KG4MBU-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