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 OK4MD - show graphs
Comment: ...
Location: 50°01.40' N 14°26.27' E - locator JO70FA25NO - show map
4.5 miles South bearing 170° from Staré Město, Hlavní Mesto Praha, Czech Republic [?]
4.5 miles South bearing 170° from Prague, Hlavní Mesto Praha, Czech Republic
4.7 miles South bearing 162° from Malá Strana, Hlavní Mesto Praha, Czech Republic
77.3 miles Southeast bearing 156° from Dresden, Direktionsbezirk Dresden, Saxony, Germany
Last position: 2024-05-21 17:25:48 EDT (1d 4h42m ago)
2024-05-21 23:25:48 CEST local time at Staré Město, Czech Republic [?]
Altitude: 902 ft
Course: 245°
Speed: 0 MPH
Last path: OK4MD>aprs.fi via aprsfi-iOS
Positions stored: 1433
Other SSIDs: OK4MD-2 OK4MD-3 OK4MD-14 OK4MD-15 OK4MD-12 OK4MD-ios OK4MD-ios OK4MD-5 OK4MD-1 OK4MD-9 OK4MD-N OK4MD-10 OK4MD-N1 OK4MD-HS OK4MD-6 OK4MD-7 OK4MD-8 OK4MD-11
Stations near current position of OK4MD - show more
callsign distance last heard - EDT      callsign distance last heard - EDT
OK4MD144.3 yards 312°2024-05-22 06:00:40 OK1IMU-8254.8 yards 260°2024-05-11 16:12:06
OK1GAL0.4 miles 66°2024-05-09 22:44:00 OK1COM-90.7 miles 277°2024-05-10 09:20:43
OK1CNN-90.7 miles 278°2024-05-22 22:04:26 OK5KV1.0 miles 236°2024-05-05 05:31:23
PrahaLibu1.1 miles 163°2024-05-22 21:18:35 OK1SE-121.2 miles 264°2024-05-22 22:04:05
EW92021.4 miles 359°2024-05-22 22:00:35 HB3XCE-71.8 miles 137°2024-05-19 10:08:07
HB3XCE1.8 miles 138°2024-05-18 13:28:38 OK1VCF1.8 miles 30°2024-05-19 07:14:15
OK7W1.9 miles 357°2024-05-22 21:56:26 OK1VCF-41.9 miles 30°2024-05-22 21:54:34
OK1VCF-81.9 miles 30°2024-05-22 22:06:30 OK1FXF2.0 miles 3°2024-05-17 11:11:06
OK1TOT-112.1 miles 209°2024-05-15 13:08:38 OK1TOT-102.1 miles 218°2024-05-22 22:02:40
DO4ZZK-22.3 miles 61°2024-05-17 09:29:59 D04ZZK-72.5 miles 65°2024-05-06 12:56:53
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