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 7M4LLE-9 - show graphs
Comment: 430.930MHz RX
Mic-E message: Off duty
Location: 35°42.80' N 139°51.88' E - locator PM95WR31SE - show map
5.2 km Northwest bearing 336° from Urayasu, Tōkyō, Japan [?]
15.8 km East bearing 80° from Tokyo, Tōkyō, Japan
16.8 km Northeast bearing 46° from Shinagawa-ku, Japan
35.7 km Northeast bearing 34° from Yokohama-shi, Kanagawa, Japan
Last position: 2025-08-24 14:58:54 UTC (7d 19h28m ago)
2025-08-24 23:58:54 JST local time at Urayasu, Japan [?]
Altitude: 3 m
Course: 32°
Speed: 9 km/h
Device: Yaesu: FTM-510D (rig)
Last path: 7M4LLE-9>SUTRX0 via WIDE1-1,qAR,JS1YNE-10 (good)
Positions stored: 6237
Other SSIDs: 7M4LLE-7
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