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 ER-SR4PL - show graphs
Source callsign: SR4PL
Comment: 439.575MHz T067 R19k SR4PL Podlesna Diamond X-300 170m n.p.m 2xMotorola gm340 10W
Last status:
Location: 53°55.90' N 20°29.90' E - locator KO03FW93TO - show map
5.6 miles Southeast bearing 133° from Dobre Miasto, Warmian-Masurian Voivodeship, Poland [?]
6.5 miles North bearing 7° from Dywity, Powiat olsztyński, Warmian-Masurian Voivodeship, Poland
10.5 miles North bearing 1° from Olsztyn, Warmian-Masurian Voivodeship, Poland
53.5 miles South bearing 181° from Kaliningrad, Kaliningrad, Russia
Last position: 2025-01-26 04:07:58 EST (48m42s ago)
2025-01-26 10:07:58 CET local time at Dobre Miasto, Poland [?]
Last telemetry: 2025-01-26 04:47:48 EST (8m52s ago) – show telemetry
Ch 1: 0 RX Erlang, Ch 2: 0 TX Erlang, Ch 3: 0 RXcount/10m, Ch 4: 0 TXcount/10m, Ch 5: 0 none1
 1     2     3     4     5     6     7     8 
Last path: SR4PL>APRS via TCPIP*,qAC,EIGHTH
Positions stored: 1
Stations near current position of ER-SR4PL - show more
callsign distance last heard - EST      callsign distance last heard - EST
WOJTE4-154.3 miles 312°2025-01-09 13:39:35 WOJTE45.0 miles 306°2025-01-09 14:02:39
SP4BF-99.8 miles 182°2025-01-18 16:00:45 SP4BF-189.8 miles 182°2025-01-25 21:52:16
SP4AG-910.2 miles 181°2025-01-18 16:20:59 145.725OU10.9 miles 176°2025-01-26 04:51:57
SR4NWO11.1 miles 180°2025-01-26 04:53:46 SR4UVN-R11.1 miles 182°2025-01-26 04:46:09
SR4UVN B11.1 miles 182°2025-01-26 04:43:59 SR4UVN-B11.1 miles 182°2025-01-26 04:44:09
ER-SR4ON11.1 miles 182°2025-01-26 04:54:15 438.675OU11.1 miles 182°2025-01-26 04:46:02
SQ4CCR-911.3 miles 179°2025-01-22 11:20:28 SP4BRH-912.1 miles 12°2025-01-25 10:56:30
SQ4INP-1012.2 miles 180°2024-12-31 08:46:22 SQ4FXY-1812.2 miles 180°2025-01-19 12:48:47
SP4TM-712.7 miles 178°2025-01-14 04:10:19 SP4TM-412.7 miles 177°2025-01-01 11:44:06
SP4NOL-1813.9 miles 180°2024-12-29 13:00:55 SP4HIE-922.8 miles 266°2025-01-23 07:11:27
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