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 weather station JH1LWU-13 - show graphs
Location: 35°46.56' N 139°54.32' E - locator PM95WS86PF - show map
945.7 m Southeast bearing 149° from Matsudo, Chiba, Japan [?]
6.5 km North bearing 344° from Ichikawa, Chiba, Japan
21.5 km Northeast bearing 63° from Tokyo, Tōkyō, Japan
43.5 km Northeast bearing 33° from Yokohama-shi, Kanagawa, Japan
Last position: 2025-08-19 22:12:38 UTC (14d 14h55m ago)
2025-08-20 07:12:38 JST local time at Matsudo, Japan [?]
Last WX report: 2025-08-19 22:12:38 UTC (14d 14h55m ago) – show weather charts
30.0 °C 59% 1009.0 mbar 0.0 m/s East
Device: Open Source: Xastir (software, Linux/Unix)
Last path: JH1LWU-13>APX221 via TCPIP*,qAC,T2OSAKA
Positions stored: 7
Other SSIDs: JH1LWU-12 JH1LWU-6
Last heard a station directly: 2025-08-19 11:51:58 UTC (15d 1h15m ago)
Normal receiver range estimate: 70 km (Updated: 2015-03-31 21:17:15 UTC)
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