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 9M4RJB-3 - show graphs
Comment: 13.6V 27C JASRA-MyAPRS ALOHA Tower Digipeater 144.390MHz IC2020+T3mini
Location: 1°27.89' N 103°44.27' E - locator OJ11UL81MN - show map
1.4 miles West bearing 268° from Johor Bahru, Johor, Malaysia [?]
7.5 miles Southeast bearing 132° from Sekudai, Johor, Malaysia
14.4 miles Northwest bearing 327° from Singapore, Singapore
Last position: 2025-01-29 13:06:49 EST (35m45s ago)
2025-01-30 02:06:49 +08 local time at Johor Bahru, Malaysia [?]
Device: Argent Data Systems: OpenTracker (tracker)
Last path: 9M4RJB-3>APOT30 via WIDE1-1,WIDE2-1,qAR,9W2KHE-1 (good)
Positions stored: 3
Packet rate: 1317 seconds between packets on average during 64534 seconds.
APRS digipeater – Statistics for 2025-01:
Stations heard directly: 35 on radio path – show map
Last heard a station directly: 2025-01-29 13:32:51 EST (9m43s ago)
Normal receiver range estimate: 56 miles (Updated: 2025-01-29 12:21:46 EST)
Position packets heard directly: 4839 on radio path
Stations near current position of 9M4RJB-3 - show more
callsign distance last heard - EST      callsign distance last heard - EST
9W2RMJ-91.7 miles 35°2025-01-25 18:37:27 9W2USY-71.8 miles 326°2025-01-29 00:35:40
9W2GCC-61.9 miles 327°2025-01-16 05:49:39 9W2GCC-12.0 miles 330°2025-01-29 13:38:17
9W2GCC-92.0 miles 330°2025-01-29 05:30:35 9W2GCC-82.1 miles 329°2025-01-28 23:03:14
9W2JBV-32.4 miles 10°2025-01-29 13:38:24 9W2RLW-62.5 miles 327°2025-01-28 21:51:26
9W2RLW-102.6 miles 328°2025-01-29 13:41:20 9W2RLW-92.6 miles 327°2025-01-29 11:12:28
9W2RLW-22.6 miles 327°2025-01-29 13:34:29 0056311262.6 miles 116°2025-01-29 13:39:28
9M4GJS2.7 miles 323°2025-01-29 13:39:25 9W2TBJ-42.8 miles 19°2025-01-29 13:26:03
9W2TBJ-62.9 miles 19°2025-01-15 21:05:52 5257013093.3 miles 84°2025-01-01 19:58:47
9W2JBV-13.4 miles 32°2025-01-29 13:39:27 9W2SNN-53.5 miles 327°2025-01-27 02:27:26
9W2MOH-63.6 miles 52°2025-01-23 22:12:48 9W2MPT-63.6 miles 52°2025-01-24 00:45:08
Stations which heard 9M4RJB-3 directly on radio –
callsign pkts first heard - EST last heard longest (tx => rx) longest at - EST
9W2RLW-9 1 2025-01-29 01:17:29 2025-01-29 01:17:29 OJ11UL > OJ11UL 2.4 miles 328° 2025-01-29 01:17:29
9W2KHE-1 770 2025-01-03 06:10:51 2025-01-29 13:06:49 OJ11UL > OJ11UN 6.6 miles 360° 2025-01-29 13:06:49
9W2JBV-9 1 2025-01-04 08:45:17 2025-01-04 08:45:17 OJ11UL > OJ11UL 3.0 miles 311° 2025-01-04 08:45:17
9W2FZW-3 126 2025-01-01 05:02:17 2025-01-29 04:01:07 OJ11UL > OJ11UM 5.0 miles 326° 2025-01-29 04:01:07
9W2RLW-2 1465 2024-12-31 19:16:15 2025-01-29 13:06:54 OJ11UL > OJ11UL 2.6 miles 327° 2025-01-29 13:06:54
9M4RJN-3 9 2025-01-01 12:05:23 2025-01-22 03:42:31 OJ11UL > OJ11LT 60.1 miles 294° 2025-01-22 03:42:31
9W2GCC-1 1553 2024-12-31 19:16:17 2025-01-29 13:06:49 OJ11UL > OJ11UL 2.0 miles 330° 2025-01-29 13:06:49
9W2DVZ-1 3 2025-01-28 21:33:22 2025-01-29 01:37:43 OJ11UL > OJ11UN 5.8 miles 347° 2025-01-29 01:37:43
9M4RAP-3 641 2024-12-31 20:36:46 2025-01-29 12:26:32 OJ11UL > OJ11SO 16.4 miles 306° 2025-01-29 12:26:32

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.
Stations heard directly by 9M4RJB-3
callsign pkts first heard - EST last heard longest (rx => tx) longest at - EST
9W2RLW-9 290 2024-12-31 23:59:19 2025-01-29 07:22:57 OJ11WP > OJ11UL 14.8 miles 28° 2025-01-11 23:16:07
9W2JEK-9 1 2025-01-25 10:57:22 2025-01-25 10:57:22 OJ11TO > OJ11UL 12.3 miles 329° 2025-01-25 10:57:22
9W2JEK-8 24 2025-01-12 22:30:04 2025-01-13 02:13:24 OJ11RR > OJ11UL 26.9 miles 310° 2025-01-12 22:30:04
9W2HFI-7 77 2025-01-01 05:35:40 2025-01-26 18:15:07 OJ11XM > OJ11UL 15.9 miles 74° 2025-01-10 05:15:18
9W2HFI-9 220 2025-01-03 23:10:03 2025-01-29 04:34:30 OJ11WP > OJ11UL 14.6 miles 28° 2025-01-12 18:14:10
9W2USY-9 31 2025-01-01 06:38:17 2025-01-25 09:41:48 OJ11TO > OJ11UL 13.3 miles 322° 2025-01-11 01:30:40
9W2KHE-7 17 2025-01-28 23:10:33 2025-01-29 00:41:50 OJ11UK > OJ11UL 3.8 miles 259° 2025-01-28 23:33:00
9W2KHE-9 357 2025-01-01 05:02:19 2025-01-29 01:27:34 OJ11VO > OJ11UL 12.1 miles 28° 2025-01-23 03:03:40
9W2BAF-9 301 2025-01-01 22:30:41 2025-01-29 04:12:40 OJ11VO > OJ11UL 12.0 miles 29° 2025-01-15 02:15:09
9W2BAF-3 274 2024-12-31 19:52:41 2025-01-29 13:27:21 OJ11WO > OJ11UL 12.2 miles 46° 2025-01-29 13:27:21
9W2HFI-1 154 2025-01-16 06:59:11 2025-01-29 11:08:32 OJ11VO > OJ11UL 12.0 miles 29° 2025-01-29 11:08:32
9W2JBV-9 166 2025-01-01 19:50:06 2025-01-28 01:01:24 OJ11TO > OJ11UL 11.7 miles 320° 2025-01-28 01:01:24
9W2KHE-8 21 2025-01-01 19:06:29 2025-01-22 05:16:27 OJ11VN > OJ11UL 9.8 miles 35° 2025-01-21 19:21:07
9W2FZW-3 221 2024-12-31 22:12:27 2025-01-29 10:53:59 OJ11UM > OJ11UL 5.0 miles 326° 2025-01-29 10:53:59
9W2RLW-2 106 2025-01-01 13:30:31 2025-01-29 13:13:55 OJ11UL > OJ11UL 2.6 miles 327° 2025-01-29 13:13:55
9M4RJN-3 286 2024-12-31 20:58:23 2025-01-29 13:15:56 OJ11LT > OJ11UL 60.1 miles 294° 2025-01-29 13:15:56
9W2RMJ-9 242 2025-01-01 06:02:02 2025-01-25 18:37:31 OJ11VN > OJ11UL 9.7 miles 35° 2025-01-15 18:06:46
9W2KHE-2 16 2024-12-31 20:52:29 2025-01-28 03:16:04 OJ11WR > OJ11UL 21.8 miles 31° 2025-01-28 03:16:04
9W2JBV-3 147 2025-01-01 03:00:46 2025-01-29 11:38:08 OJ11UL > OJ11UL 2.4 miles 10° 2025-01-29 11:38:08
9W2OBB-3 404 2024-12-31 21:02:25 2025-01-29 12:59:22 OJ11VM > OJ11UL 6.9 miles 49° 2025-01-29 12:59:22
9W2USY-8 417 2024-12-31 22:51:56 2025-01-28 03:41:14 OJ11RQ > OJ11UL 22.4 miles 310° 2025-01-05 21:41:19
9W2WVS-3 161 2025-01-01 00:54:55 2025-01-29 11:43:20 OJ11TL > OJ11UL 10.6 miles 272° 2025-01-29 11:43:20
9W2WIU-3 214 2024-12-31 19:53:28 2025-01-29 10:55:21 OJ11VN > OJ11UL 9.1 miles 33° 2025-01-29 10:55:21
9W2OBB-8 182 2025-01-02 20:28:39 2025-01-28 09:26:03 OJ11XL > OJ11UL 13.2 miles 87° 2025-01-18 03:09:50
9W2MOH-9 8 2025-01-17 19:21:05 2025-01-25 19:44:57 OJ11VO > OJ11UL 10.2 miles 33° 2025-01-18 20:40:49
9W2BCB-9 16 2025-01-05 18:45:36 2025-01-06 07:23:57 OJ11TO > OJ11UL 11.0 miles 325° 2025-01-06 07:11:06
9W2USY-7 7 2025-01-01 18:17:04 2025-01-24 01:36:03 OJ11VN > OJ11UL 7.6 miles 11° 2025-01-08 19:00:28
9W2CHF-9 91 2025-01-02 20:10:48 2025-01-17 13:56:52 OJ11TO > OJ11UL 15.2 miles 316° 2025-01-17 13:56:52
9M4RAP-3 291 2024-12-31 19:16:30 2025-01-29 13:24:51 OJ11SO > OJ11UL 16.4 miles 306° 2025-01-29 13:24:51
9W2LOZ-8 2 2025-01-03 01:29:41 2025-01-03 01:58:49 OJ11WL > OJ11UL 12.1 miles 82° 2025-01-03 01:29:41
9M4BCW-3 4 2025-01-29 12:21:46 2025-01-29 13:32:51 OJ21LL > OJ11UL 84.7 miles 89° 2025-01-29 13:32:51
9W2GCC-8 74 2025-01-05 04:56:22 2025-01-28 21:08:39 OJ11RR > OJ11UL 26.6 miles 310° 2025-01-24 21:04:25
9M2ZRF-9 10 2025-01-28 02:11:16 2025-01-29 02:13:36 OJ11RR > OJ11UL 27.5 miles 310° 2025-01-28 02:11:16
9W2GCC-9 6 2025-01-28 23:30:26 2025-01-29 05:10:35 OJ11TK > OJ11UL 6.0 miles 261° 2025-01-28 23:30:53
9W2DVZ-4 1 2025-01-20 02:46:26 2025-01-20 02:46:26 OJ11UN > OJ11UL 5.8 miles 342° 2025-01-20 02:46:26

Only stations from which a position packet has been heard 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