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 USI-4 - show graphs
Comment: <GM0USI-4>APLRT1,GM0USI-10*:!/27?ZMFD*>:sQ<MB7UAH-10>APLRG1,WIDE1-1:}MB6DF-S>APDG01,TCPIP,MB7UAH-10*:;MB6DF B *1123
Location: 55°53.04' N 4°17.25' W - locator IO75UV52LD - show map
1.7 miles Northwest bearing 318° from Glasgow, Glasgow City, Scotland, United Kingdom [?]
2.8 miles Southeast bearing 141° from Bearsden, East Dunbartonshire, Scotland, United Kingdom
4.7 miles East bearing 105° from Clydebank, West Dunbartonshire, Scotland, United Kingdom
42.5 miles West bearing 264° from Edinburgh, City of Edinburgh, Scotland, United Kingdom
Last position: 2025-01-11 18:17:10 EST (2d 15h33m ago)
2025-01-11 23:17:10 GMT local time at Glasgow, United Kingdom [?]
Altitude: 111 ft
Speed: 6 MPH
Device: Ricardo, CA2RXU: ESP32 LoRa Tracker (tracker)
Last path: USI-4>APLRT1 via WIDE1-1,qAR,MB7UMT-10 (good)
Positions stored: 4
Stations near current position of USI-4 - show more
callsign distance last heard - EST      callsign distance last heard - EST
GM0USI-984.4 yards 348°2025-01-05 14:12:23 GM0USI-1086.1 yards 19°2025-01-14 09:39:24
MB7USI-1119.3 yards 89°2025-01-04 17:53:25 MM0NNA-70.3 miles 274°2025-01-14 09:50:28
GM7URD-111.2 miles 327°2025-01-14 09:24:18 GM7URD-71.2 miles 328°2025-01-09 03:38:35
MM7SKL1.4 miles 252°2025-01-14 09:12:30 GM0DXI-91.8 miles 151°2025-01-14 03:14:38
M0EAL-102.3 miles 134°2025-01-06 11:23:05 S-72.6 miles 294°2025-01-10 18:32:08
PQAPR-72.6 miles 294°2025-01-11 02:29:43 MM0NNA-102.6 miles 294°2025-01-14 09:46:30
ALIKI FORCE2.7 miles 253°2025-01-14 09:48:09 HEBRIDEAN ISLES2.8 miles 244°2025-01-14 07:02:49
MM0XXP-72.9 miles 1°2025-01-14 09:48:10 MM3DDQ-93.2 miles 257°2025-01-14 04:09:04
MM0HCO-D3.2 miles 300°2025-01-07 07:14:01 MM7KEL-43.3 miles 283°2025-01-13 13:55:51
PATHWAY3.7 miles 271°2025-01-13 22:28:44 GM4BLO-93.8 miles 282°2024-12-26 07:43:03
Stations which heard USI-4 directly on radio –
callsign pkts first heard - EST last heard longest (tx => rx) longest at - EST
MB7UMT-10 2 2025-01-11 18:16:07 2025-01-11 18:17:10 IO75UV > IO75TS 7.7 miles 193° 2025-01-11 18:17:10
GM0USI-10 1 2025-01-11 18:15:56 2025-01-11 18:15:56 IO75UV > IO75UV 303.1 yards 43° 2025-01-11 18:15:56

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