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 JA1OFO-i - show graphs
Comment: aprs.fi iOS
Location: 36°22.10' N 139°05.00' E - locator PM96MI98XJ - show map
3.2 km Southeast bearing 142° from Maebashi-shi, Gunma, Japan [?]
7.1 km Northeast bearing 57° from Takasaki, Gunma, Japan
93.2 km Northwest bearing 324° from Tokyo, Tōkyō, Japan
114.0 km Northwest bearing 334° from Yokohama-shi, Kanagawa, Japan
Last position: 2026-01-06 08:02:32 UTC (7d 23h53m ago)
2026-01-06 17:02:32 JST local time at Maebashi-shi, Japan [?]
Altitude: 136 m
Position ambiguous: Precision reduced at transmitter by 1 digits, position resolution approximately 185.0 m.
Course: 180°
Speed: 21 km/h
Last path: >aprs.fi via aprsfi-iOS
Positions stored: 8
Other SSIDs: JA1OFO-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