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°49.65' N 139°52.75' E - locator PM95WT58MO - show map
2.4 miles Southwest bearing 213° from Nagareyama, Chiba, Japan [?]
3.3 miles North bearing 339° from Matsudo, Chiba, Japan
14.2 miles Northeast bearing 48° from Tokyo, Tōkyō, Japan
29.4 miles Northeast bearing 27° from Yokohama-shi, Kanagawa, Japan
Last position: 2025-02-04 03:54:04 EST (3d 20h8m ago)
2025-02-04 17:54:04 JST local time at Nagareyama, Japan [?]
Altitude: 10 ft
Position ambiguous: Precision reduced at transmitter by 1 digits, position resolution approximately 202.3 yards.
Course: 338°
Speed: 4 MPH
Device: Yaesu: FTM-300D (rig)
Last path: JK1BYO-9>S5TYVL via JS1YAB-2*,qAR,JQ1YDA-10 (good)
Positions stored: 25658
Packet rate: 411 seconds between packets on average during 11101 seconds.
Stations near current position of JK1BYO-9 - show more
callsign distance last heard - EST      callsign distance last heard - EST
JE1UDL-50.9 miles 17°2025-02-06 22:11:02 JQ1QBR-92.4 miles 156°2025-02-06 01:36:54
JQ1QBR2.5 miles 164°2025-01-18 20:51:32 JH1RDA-A2.6 miles 120°2025-02-07 19:42:27
7M1JBF-112.7 miles 143°2025-02-07 23:27:52 JE1OSX-93.1 miles 101°2025-02-07 06:06:39
JG1QZF3.1 miles 178°2025-02-05 07:40:49 JL1AVU3.2 miles 45°2025-02-02 05:46:39
JO1KBQ-93.3 miles 173°2025-01-25 21:38:00 JI1FQM-93.4 miles 298°2025-02-07 16:52:32
JA1HSS-93.5 miles 156°2025-02-06 19:11:39 JH1LWU-133.8 miles 158°2025-02-07 23:38:32
7M1QMY-54.0 miles 257°2025-01-11 02:34:40 JE1LWA-94.2 miles 186°2025-02-05 06:13:36
7L2KOZ-94.2 miles 91°2025-02-05 00:50:12 JF1JUZ4.4 miles 219°2025-02-03 03:01:52
JH1HST-74.5 miles 268°2025-02-04 04:44:02 JQ1BRQ-124.6 miles 129°2025-01-31 04:34:35
JF0PJS-95.1 miles 218°2025-01-25 02:33:27 JI1NKN-95.5 miles 63°2025-01-19 05:01:03
Stations which heard JK1BYO-9 directly on radio –
callsign pkts first heard - EST last heard longest (tx => rx) longest at - EST
JQ1ZIF-2 1 2025-02-01 18:44:59 2025-02-01 18:44:59 PM95UU > QM05CK 38.9 miles 135° 2025-02-01 18:44:59
JQ1ZOM-10 1 2025-02-03 16:21:34 2025-02-03 16:21:34 PM96OE > PM96TI 25.2 miles 61° 2025-02-03 16:21:34
JS1YAB-2 13 2025-02-01 18:26:42 2025-02-04 03:54:04 PM95WT > PM95OP 37.9 miles 249° 2025-02-04 03:54:04
7L2IWN-13 3 2025-02-03 16:16:34 2025-02-04 01:29:02 PM96NH > PM95MW 23.3 miles 188° 2025-02-03 16:31:34
JN1JTN-2 7 2025-02-03 15:51:35 2025-02-04 01:39:03 PM95RV > PM96NK 42.7 miles 331° 2025-02-03 15:51:35
JS1YDF-10 4 2025-02-03 16:26:34 2025-02-03 16:51:38 PM96MM > PM96MI 12.1 miles 181° 2025-02-03 16:51:38
JK1AUT-10 2 2025-02-03 16:46:38 2025-02-04 01:19:02 PM96ML > PM96OI 13.1 miles 136° 2025-02-03 16:46:38
JA1YCQ-10 6 2025-02-01 18:34:47 2025-02-04 02:34:28 PM95UU > PM95UR 9.0 miles 154° 2025-02-03 06:39:15
JS1YNE-10 26 2025-02-01 18:17:29 2025-02-04 03:31:35 PM95TT > PM95WR 13.5 miles 117° 2025-02-04 02:32:59
JQ1ZPA-10 3 2025-02-04 02:54:15 2025-02-04 02:58:52 PM95WU > PM95VP 12.9 miles 193° 2025-02-04 02:58:52

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