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 OK1ZDJ-9 - show graphs
Comment: DP_BSRI: -122 dBm DP_SNR: -11.00 dB
Location: 50°16.75' N 15°29.51' E - locator JO70RG96AX - show map
1.7 km Southeast bearing 143° from Smidary, Czech Republic [?]
4.2 km North bearing 1° from Nový Bydžov, Královéhradecký Kraj, Czech Republic
79.1 km East bearing 74° from Prague, Hlavní Mesto Praha, Czech Republic
141.8 km Southwest bearing 231° from Wrocław, Lower Silesian Voivodeship, Poland
Last position: 2026-01-17 18:57:12 UTC (5d 11h4m ago)
2026-01-17 19:57:12 CET local time at Smidary, Czech Republic [?]
Altitude: 286 m
Speed: 37 km/h
Last telemetry: 2026-01-17 18:56:47 UTC (5d 11h5m ago) – show telemetry
V_Batt: 3.800 VDC
Device: Ricardo, CA2RXU: ESP32 LoRa Tracker (tracker)
Last path: OK1ZDJ-9>APLRT1 via WIDE1-1,qAO,OK0BAF-10 (good)
Positions stored: 6316
Other SSIDs: OK1ZDJ-13 OK1ZDJ-5 OK1ZDJ-2
Stations which heard OK1ZDJ-9 directly on radio –
callsign pkts first heard - UTC last heard longest (tx => rx) longest at - UTC

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 · iPhone/iPad APRS