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 JK1BYO-9 - show graphs
Mic-E message: In service
Location: 35°49.85' N 139°38.45' E - locator PM95TT69VJ - show map
4.5 km Northeast bearing 50° from Asaka, Saitama, Japan [?]
5.2 km East bearing 93° from Shiki, Saitama, Japan
16.4 km North bearing 344° from Tokyo, Tōkyō, Japan
42.6 km North bearing 360° from Yokohama-shi, Kanagawa, Japan
Last position: 2024-05-24 23:47:37 UTC (1m49s ago)
2024-05-25 08:47:37 JST local time at Asaka, Japan [?]
Altitude: 4 m
Position ambiguous: Precision reduced at transmitter by 1 digits, position resolution approximately 185.2 m.
Course: 339°
Speed: 24 km/h
Device: Yaesu: FTM-300D (rig)
Last path: JK1BYO-9>S5TYXL via JS1YAB-2*,qAS,JF1AJE-10 (good)
Positions stored: 23985
Stations which heard JK1BYO-9 directly on radio –
callsign pkts first heard - UTC last heard longest (tx => rx) longest at - UTC

Only position packets which were originated by the station are shown here. The range statistics show some extra long hops, because some digipeaters do not correctly add themselves to the digipeater path. Please check the raw packets.
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