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*
Web station KO4UOA - show graphs
Location: 38°52.39' N 78°28.30' W - locator FM08SU39JN - show map
1.9 miles East bearing 108° from Woodstock, Shenandoah County, Virginia, United States [?]
6.2 miles Northeast bearing 55° from Edinburg, Shenandoah County, Virginia, United States
56.1 miles West bearing 273° from Centreville, Fairfax County, Virginia, United States
67.6 miles West bearing 253° from Germantown, Montgomery County, Maryland, United States
Last position: 2024-04-16 18:40:28 EDT (31d 5h16m ago)
2024-04-16 18:40:28 EDT local time at Woodstock, United States [?]
Altitude: 699 ft
Course: 130°
Speed: 1 MPH
Last path: KO4UOA>aprs.fi via aprsfi-iOS
Positions stored: 1346
Stations near current position of KO4UOA - show more
callsign distance last heard - EDT      callsign distance last heard - EDT
N1FLN-93.9 miles 198°2024-04-27 10:47:44 KG4QXL-14.4 miles 84°2024-05-17 23:55:22
CW52865.0 miles 331°2024-05-17 23:55:34 K4EGL-18.6 miles 155°2024-05-01 13:53:37
W4V/HB0419.0 miles 54°2024-05-15 08:11:20 W4V/SH0249.1 miles 185°2024-04-27 17:47:24
GP-WHTRCK9.3 miles 319°2024-05-17 23:47:29 KD4WIE-109.4 miles 242°2024-05-17 22:58:29
DW941210.2 miles 85°2024-05-17 23:45:38 FW790611.9 miles 56°2024-05-17 23:55:45
N3GJZ-912.0 miles 40°2024-05-13 16:29:34 WA6MPR-312.0 miles 171°2024-05-04 15:10:25
KO4SSD-512.2 miles 286°2024-04-20 16:44:53 KO4SSD-312.2 miles 286°2024-04-20 19:14:13
KO4SSD-212.2 miles 287°2024-04-20 16:19:29 KO4TIS-112.2 miles 286°2024-04-20 19:02:42
W4V/SH00713.1 miles 126°2024-05-03 15:24:35 KK4OID-713.3 miles 45°2024-05-17 19:00:22
EW954213.6 miles 53°2024-05-17 23:55:37 W4V/SH02714.4 miles 95°2024-04-19 18:57:51
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