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 JO4NAO-5 - show graphs
Comment: nao
Location: 35°37.76' N 139°44.36' E - locator PM95UP81RA - show map
2.4 km North bearing 20° from Shinagawa-ku, Japan [?]
7.9 km Southeast bearing 147° from Tokyo, Tōkyō, Japan
22.0 km Northeast bearing 23° from Yokohama-shi, Kanagawa, Japan
Last position: 2025-10-17 05:00:00 UTC (21d 14h29m ago)
2025-10-17 14:00:00 JST local time at Shinagawa-ku, Japan [?]
Altitude: 47 m
Course: 311°
Speed: 2 km/h
Device: Open Source: APRSdroid (app, Android)
Last path: JO4NAO-5>APDR16 via TCPIP*,qAC,T2HAKATA
Positions stored: 4721
Other SSIDs: JO4NAO-7 JO4NAO-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