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 W1ADV-12 - show graphs
Comment: MT-RTG
Mic-E message: In service
Last status: MicroTrak FA v1.42
Location: 37°20.64' N 121°56.07' W - locator CM97AI72UN - show map
3.5 km West bearing 278° from San Jose, Santa Clara County, California, United States [?]
6.5 km North bearing 12° from Campbell, Santa Clara County, California, United States
9.7 km North bearing 358° from Cambrian Park, Santa Clara County, California, United States
64.2 km Southeast bearing 138° from San Francisco, San Francisco County, California, United States
Last position: 2025-06-20 19:55:43 UTC (11d 9h24m ago)
2025-06-20 12:55:43 PDT local time at San Jose, United States [?]
Altitude: 13 m
Course: 123°
Speed: 11 km/h
Last telemetry: 2025-06-20 19:55:43 UTC (11d 9h24m ago) – show telemetry
Ch 1: 447, Ch 2: 621, Ch 3: 0, Ch 4: 0, Ch 5: 0
Device: Byonics: TinyTrak3 (tracker)
Last path: W1ADV-12>S7RPVT via WR6ABD*,WIDE2-1,qAR,KG6HDK-5 (good)
Positions stored: 1577
Other SSIDs: W1ADV-7 W1ADV-13 W1ADV-9
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