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 object KD4SV B - show graphs
Map loading...
Source callsign: KD4SV-S
Comment: 440 Voice 431.00000MHz +0.0000MHz
Location: 38°48.00' N 77°42.00' W - locator FM18DT62AA - show map - static map
3.5 miles West bearing 256° from Haymarket, Prince William County, Virginia, United States [?]
7.5 miles South bearing 196° from Bull Run Mountain Estates, Prince William County, Virginia, United States
36.3 miles West bearing 260° from Washington, D. C., Washington, D.C., United States
67.4 miles Southwest bearing 240° from Baltimore, City of Baltimore, Maryland, United States
Last position: 2019-07-19 22:58:29 EDT (18m41s ago)
2019-07-19 22:58:29 EDT local time at Haymarket, United States [?]
Last path: KD4SV-S>APDG01 via TCPIP*,qAC,KD4SV-GS
Positions stored: 1
Stations near current position of KD4SV B - show more
callsign distance last heard - EDT      callsign distance last heard - EDT
KD4SV-B0.0 yards 0°2019-07-19 22:58:39 NE3R B2.7 miles 43°2019-07-19 23:11:37
NE3R-B2.7 miles 43°2019-07-19 23:11:47 5242.9 miles 42°2019-07-19 23:16:15
EW89143.3 miles 42°2019-07-19 23:10:16 Heathcote3.4 miles 65°2019-07-19 23:10:51
FW21233.6 miles 91°2019-07-19 23:15:17 KM4KLB-133.9 miles 99°2019-07-19 23:17:01
LWXSVRMnA4.3 miles 90°2019-06-29 19:35:08 5044.4 miles 86°2019-07-19 23:02:45
N3UC4.4 miles 29°2019-07-19 23:10:17 KN4QYU-N4.6 miles 94°2019-07-03 10:43:45
EW70604.7 miles 8°2019-07-19 23:10:34 FW43315.0 miles 115°2019-07-19 23:15:27
W4YP5.5 miles 47°2019-07-19 23:13:05 N3VT-15.6 miles 112°2019-07-19 23:08:17
K7FSU-95.9 miles 96°2019-07-11 17:40:06 W4ERJ-96.0 miles 109°2019-06-22 15:40:57
DW73256.1 miles 142°2019-07-19 23:03:47 KK4BZ-76.5 miles 61°2019-07-15 22:16:07
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