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 AA4SI-9 - show graphs Bookmark and Share
Map loading...
Mic-E message: In service
Location: 39°18.88' N 77°45.84' W - locator FM19CH85HM - show map - static map
0.9 miles Southwest bearing 225° from Bolivar, Jefferson County, West Virginia, United States [?]
8.3 miles South bearing 165° from Shepherdstown, Jefferson County, West Virginia, United States
48.6 miles Northwest bearing 307° from Washington, Washington, D.C., United States
61.6 miles West bearing 272° from Baltimore, City of Baltimore, Maryland, United States
Last position: 2012-05-26 19:04:22 UTC (1h20m ago)
2012-05-26 15:04:22 EDT local time at Bolivar, United States [?]
Altitude: 476 ft
Course: 163°
Device: Kenwood: TM-D710 (rig)
Last path: AA4SI-9>S9QX8X via WIDE1-1,WIDE2-1,qAR,W3VLG (good)
Positions stored: 14849
Other SSIDs: AA4SI AA4SI-7
Stations near current position of AA4SI-9 - show more
callsign distance last heard - UTC      callsign distance last heard - UTC
NQ3U-7162.2 yards 209°2012-05-19 14:30:03 CW52042.1 miles 322°2012-05-26 20:24:13
K8WDX-73.0 miles 247°2012-05-08 22:28:24 DW70453.2 miles 269°2012-05-26 20:23:48
W3VLG-95.1 miles 240°2012-05-26 19:47:12 W3VLG5.1 miles 240°2012-05-26 20:23:58
KB3LVU-95.2 miles 290°2012-05-22 02:45:05 AB3BE5.6 miles 261°2012-05-15 08:09:51
DW91746.0 miles 125°2012-05-26 20:14:39 W3EAX-116.0 miles 70°2012-05-05 14:04:20
W3VLG-146.1 miles 290°2012-05-26 01:52:46 LWXFFW55A6.8 miles 164°2012-05-22 08:04:12
W3EAX-127.0 miles 3°2012-05-05 13:40:22 CW94857.5 miles 255°2012-05-26 20:15:53
K4MDG8.4 miles 123°2012-05-26 20:22:10 LWXSVRM6A8.7 miles 354°2012-05-02 22:50:47
W4RAH-19.1 miles 102°2012-05-26 20:23:37 DW01099.3 miles 2°2012-05-26 20:16:38
K8VN-610.0 miles 247°2012-05-01 22:02:21 DW929110.1 miles 266°2012-05-26 20:23:35
Stations which heard AA4SI-9 directly on radio –
callsign pkts first heard - UTC last heard longest (tx => rx) longest at - UTC
KV3B-2 2 2012-05-12 11:49:40 2012-05-17 00:53:57 FM18IP > FM18NW 31.5 miles 46° 2012-05-12 11:49:40
K7BC 13 2012-05-06 10:41:46 2012-05-25 14:55:33 FM18HP > FM18JS 8.3 miles 35° 2012-05-06 12:44:24
WD4HDL-1 9 2012-05-06 12:45:41 2012-05-19 22:27:59 FM18IQ > FM18BR 28.2 miles 277° 2012-05-11 20:27:19
N3KTX-2 1 2012-05-26 15:52:38 2012-05-26 15:52:38 FM19EG > FM19FL 17.6 miles 25° 2012-05-26 15:52:38
N3HF-1 88 2012-05-06 10:46:41 2012-05-26 15:07:09 FM18EV > FM18GQ 18.6 miles 142° 2012-05-19 22:40:19
W3VLG 10 2012-05-26 16:04:10 2012-05-26 19:04:22 FM19EI > FM19BG 11.6 miles 249° 2012-05-26 16:04:10
KE4FYL-1 7 2012-05-26 15:20:28 2012-05-26 15:36:26 FM18EX > FM19FC 10.0 miles 13° 2012-05-26 15:20:28
KI4IEO-2 1 2012-05-26 15:35:54 2012-05-26 15:35:54 FM19FC > FM19FC 2.5 miles 84° 2012-05-26 15:35:54
KG4GIY 12 2012-05-12 20:32:44 2012-05-26 15:05:14 FM18EV > FM18GR 13.2 miles 144° 2012-05-19 22:29:20
N3LJS-2 33 2012-05-18 17:34:44 2012-05-19 19:55:36 FM09KP > FM09QO 25.8 miles 92° 2012-05-19 17:41:11
N3LJS-1 3 2012-05-19 17:39:25 2012-05-19 17:58:03 FM09KP > FM09NN 11.4 miles 109° 2012-05-19 17:39:25
W4IY 176 2012-05-06 10:37:11 2012-05-25 15:49:41 FM18EV > FM18IP 25.6 miles 132° 2012-05-19 22:48:28
KV3B-1 14 2012-05-10 19:29:34 2012-05-26 15:47:07 FM18IQ > FM19JE 34.8 miles 6° 2012-05-10 19:29:34
N7NMS 14 2012-05-19 14:01:06 2012-05-19 16:54:54 FM09KM > FM09LL 6.2 miles 116° 2012-05-19 16:54:54
K5DAT-10 4 2012-05-26 15:28:06 2012-05-26 15:35:22 FM19EB > FM19FC 4.6 miles 42° 2012-05-26 15:28:06
W4PWC 24 2012-05-09 01:10:30 2012-05-26 15:08:58 FM18IP > FM18FT 14.8 miles 318° 2012-05-09 12:56:09
W4MRW-1 1 2012-05-26 15:29:00 2012-05-26 15:29:00 FM19EB > FM18HW 14.8 miles 128° 2012-05-26 15:29:00

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