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 7N4CRV - show graphs
Map loading...
Location: 35°51.37' N 139°45.37' E - locator PM95VU05RL - show map - static map
2.4 miles Southwest bearing 219° from Koshigaya, Saitama, Japan [?]
8.3 miles South bearing 179° from Kasukabe, Saitama, Japan
12.1 miles North bearing 17° from Tokyo, Tōkyō, Japan
28.9 miles North bearing 13° from Yokohama-shi, Kanagawa, Japan
Last position: 2017-01-20 03:22:06 EST (11h53m ago)
2017-01-20 17:22:06 JST local time at Koshigaya, Japan [?]
Course: 244°
Speed: 1 MPH
Device: Icom: unknown (D-Star)
Last path: 7N4CRV>API510 via DSTAR*,qAS,JR1VD-IS (good)
Positions stored: 7819
Packet rate: 7 seconds between packets on average during 360 seconds.
This station is transmitting packets at a very high rate, which causes serious congestion in the APRS network. This could be considered an abuse of the network resources.
Other SSIDs: 7N4CRV-A
Stations near current position of 7N4CRV - show more
callsign distance last heard - EST      callsign distance last heard - EST
JA1BDJ-71.4 miles 324°2017-01-19 05:58:53 JA5REF-71.7 miles 310°2017-01-14 02:56:10
JG1MOP-82.1 miles 45°2017-01-14 22:04:19 JG1MOP-D2.1 miles 45°2017-01-19 07:24:50
JG1MOP-72.1 miles 45°2016-12-31 07:44:47 JJ1BHL-72.6 miles 94°2017-01-20 01:57:37
JH4XSY2.7 miles 107°2017-01-16 09:40:10 JH4XSY-132.7 miles 108°2017-01-20 15:07:57
JH4XSY-62.7 miles 108°2017-01-20 14:18:58 7K3WKG-92.7 miles 244°2017-01-13 20:34:50
JG1MOP-92.7 miles 15°2017-01-13 23:07:05 7N2BMC-72.8 miles 11°2017-01-14 02:26:53
7M3QXW-A3.3 miles 267°2017-01-16 03:08:54 JA1BDJ-93.3 miles 266°2016-12-22 03:12:27
JH1IUP-93.8 miles 233°2017-01-20 02:46:41 JI1LPA-93.9 miles 232°2017-01-19 23:40:58
JR1UTI-124.0 miles 217°2017-01-15 04:03:12 JR1UTI-I4.0 miles 226°2017-01-13 21:48:01
JF1AJX-94.1 miles 267°2017-01-18 04:08:33 7L3KFI-74.2 miles 218°2016-12-24 01:38:49
Stations which heard 7N4CRV directly on radio –
callsign pkts first heard - EST last heard longest (tx => rx) longest at - EST
DSTAR 447 2017-01-01 16:06:26 2017-01-20 03:22:05 PM95UU > GG87JA 11521.9 miles 12° 2017-01-01 16:14:48

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.
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