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 KG4UPR-9 - show graphs
Map loading...
Comment: 146.520MHz kg4upr@arrl.net
Mic-E message: In service
Location: 39°01.82' N 77°23.98' W - locator FM19HA27AG - show map - static map
1.0 miles Southeast bearing 120° from Dulles Town Center, Loudoun County, Virginia, United States [?]
1.0 miles Southeast bearing 134° from Countryside, Loudoun County, Virginia, United States
21.6 miles Northwest bearing 296° from Washington, D. C., Washington, D.C., United States
45.8 miles Southwest bearing 247° from Baltimore, City of Baltimore, Maryland, United States
Last position: 2016-06-12 19:32:55 EDT (220d 22h13m ago)
2016-06-12 19:32:55 EDT local time at Dulles Town Center, United States [?]
Altitude: 312 ft
Course: 353°
Speed: 40 MPH
Device: Kenwood: TM-D710 (rig)
Last path: KG4UPR-9>S9PQ8R via KV3B-1,WIDE1*,WIDE2-1,qAR,KB3RRL-4 (good)
Positions stored: 19354
Other SSIDs: KG4UPR
Stations near current position of KG4UPR-9 - show more
callsign distance last heard - EST      callsign distance last heard - EST
N4CV-150.9 miles 347°2017-01-11 21:32:52 N4CV-10.9 miles 346°2016-12-30 23:07:07
KG4TIH-51.1 miles 139°2017-01-17 22:19:11 EW47571.3 miles 303°2017-01-19 16:44:47
W3RST-91.4 miles 157°2017-01-09 13:29:09 W4TTU-121.5 miles 55°2017-01-19 16:32:30
W4TTU1.6 miles 55°2017-01-19 16:40:57 W4TTU91.6 miles 56°2017-01-06 15:16:35
DW08512.1 miles 82°2017-01-19 16:38:26 KD2AVG-92.3 miles 167°2017-01-14 13:57:40
KS1G-12.3 miles 159°2017-01-19 16:38:27 DW86012.5 miles 137°2017-01-19 16:43:58
N4JOG-22.6 miles 228°2017-01-04 09:31:07 DG8PZ-52.7 miles 231°2017-01-04 17:47:32
KD2AVG-103.9 miles 206°2017-01-08 12:52:36 N2LEE-104.0 miles 161°2017-01-19 16:22:00
DW46994.1 miles 140°2017-01-19 16:43:23 KK4MBK-94.5 miles 284°2016-12-31 17:26:03
145.31DLS4.7 miles 194°2017-01-19 16:31:00 DW38394.8 miles 104°2017-01-19 16:46:22
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