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 MB7USE - show graphs
Comment: MB7USE APRS Digipeater
Location: 51°32.68' N 0°42.55' E - locator JO01IN50CR - show map
7.6 miles Southwest bearing 217° from Burnham on Crouch, Essex, England, United Kingdom [?]
9.6 miles Southwest bearing 213° from Southminster, Essex, England, United Kingdom
34.5 miles East bearing 86° from City of London, Greater London, England, United Kingdom
36.0 miles East bearing 86° from London, Greater London, England, United Kingdom
Last position: 2025-01-27 00:50:11 EST (10m9s ago)
2025-01-27 05:50:11 GMT local time at Burnham on Crouch, United Kingdom [?]
Device: Microsat: PLXDigi
Last path: MB7USE>APMI03 via WIDE2-2,qAO,M0XDC (good)
Positions stored: 1
Packet rate: 496 seconds between packets on average during 24323 seconds.
APRS digipeater – Statistics for 2025-01:
Stations heard directly: 70 on radio path – show map
Last heard a station directly: 2025-01-27 00:57:04 EST (3m16s ago)
Normal receiver range estimate: 124 miles (Updated: 2025-01-27 00:19:07 EST)
Position packets heard directly: 9836 on radio path
Stations near current position of MB7USE - show more
callsign distance last heard - EST      callsign distance last heard - EST
2E1HWE-Y0.6 miles 211°2025-01-09 11:40:07 GB7IX-R0.8 miles 252°2025-01-27 00:46:27
M0LOC1.2 miles 303°2025-01-19 11:24:28 M7RWA-71.2 miles 121°2025-01-20 09:46:09
M7RWA-D1.4 miles 139°2025-01-27 00:48:38 M0PSX-101.6 miles 283°2025-01-27 00:09:21
M0WHU-71.7 miles 279°2025-01-19 11:55:03 2E0UCW-N2.0 miles 161°2025-01-26 07:27:04
VIRTUAL ATON TRIAL G2.2 miles 164°2025-01-27 00:58:08 GW13702.2 miles 259°2025-01-27 00:45:45
SPIRIT3.1 miles 186°2025-01-26 07:58:49 NICOLE3.2 miles 178°2025-01-25 09:37:24
NORBANK3.2 miles 189°2025-01-27 00:36:27 NORSKY3.2 miles 190°2025-01-26 23:28:00
ADELINE3.2 miles 191°2025-01-26 10:58:52 SVITZER MONARCH3.3 miles 193°2025-01-10 05:19:35
NORSTREAM3.3 miles 178°2025-01-23 11:18:32 M6VMO B3.3 miles 236°2025-01-17 13:51:41
M6VMO-B3.3 miles 236°2025-01-17 13:51:51 CRISTINA MASAVEU3.5 miles 166°2025-01-23 13:32:56
Stations which heard MB7USE directly on radio –
callsign pkts first heard - EST last heard longest (tx => rx) longest at - EST
MB7UP 9 2025-01-13 19:17:08 2025-01-17 12:52:15 JO01IN > IO90LU 90.5 miles 239° 2025-01-17 12:52:15
MB7UJ 307 2025-01-01 23:30:56 2025-01-26 16:19:34 JO01IN > IO91PK 62.7 miles 265° 2025-01-26 16:19:34
MB7UG 379 2025-01-02 23:47:17 2025-01-25 22:48:34 JO01IN > IO91ME 76.4 miles 252° 2025-01-25 22:48:34
G4MRS-2 912 2025-01-01 00:29:43 2025-01-26 23:50:01 JO01IN > JO02PB 42.9 miles 34° 2025-01-26 23:50:01
M0XDC 1094 2024-12-31 19:29:22 2025-01-27 00:50:01 JO01IN > JO01DQ 19.4 miles 298° 2025-01-27 00:50:01
MB7UUE 1 2025-01-16 07:20:25 2025-01-16 07:20:25 JO01IN > JO01DN 18.9 miles 275° 2025-01-16 07:20:25
F8KGJ-4 6 2025-01-13 17:47:09 2025-01-14 02:47:37 JO01IN > IN98QX 187.2 miles 199° 2025-01-14 02:47:37
F8KCS-2 1 2025-01-14 02:47:40 2025-01-14 02:47:40 JO01IN > JN19RN 180.7 miles 138° 2025-01-14 02:47:40
MB7VA 247 2025-01-04 09:34:12 2025-01-26 21:05:00 JO01IN > JO00CX 44.5 miles 207° 2025-01-26 21:05:00
M0BPQ-1 1095 2024-12-31 19:14:16 2025-01-27 00:50:01 JO01IN > JO01AO 30.5 miles 279° 2025-01-27 00:50:01
F4KJL-4 1 2025-01-13 23:32:27 2025-01-13 23:32:27 JO01IN > JN09CR 128.5 miles 190° 2025-01-13 23:32:27
MB7VH 1 2025-01-15 17:49:52 2025-01-15 17:49:52 JO01IN > IO92RA 62.4 miles 303° 2025-01-15 17:49:52
F6KFW-10 2 2025-01-13 19:47:04 2025-01-13 21:02:07 JO01IN > IN99EP 167.6 miles 219° 2025-01-13 21:02:07
F6KRM-3 1 2025-01-13 20:32:06 2025-01-13 20:32:06 JO01IN > IN88RN 251.3 miles 216° 2025-01-13 20:32:06
EI2MGP-2 1 2025-01-17 21:22:38 2025-01-17 21:22:38 JO01IN > IO51KX 421.6 miles 278° 2025-01-17 21:22:38
MB7UBE 9 2025-01-04 06:03:59 2025-01-25 23:33:40 JO01IN > JO01MT 23.4 miles 35° 2025-01-25 23:33:40
M0PSX-10 97 2025-01-01 02:44:42 2025-01-25 18:03:21 JO01IN > JO01IN 1.6 miles 283° 2025-01-25 18:03:21
F6KFW-3 4 2025-01-13 18:47:06 2025-01-13 23:17:32 JO01IN > IN99BP 171.2 miles 222° 2025-01-13 23:17:32
F1ZNV-4 1 2025-01-13 23:17:13 2025-01-13 23:17:13 JO01IN > JN09BM 142.4 miles 190° 2025-01-13 23:17:13
ON6YF-2 2 2025-01-13 22:17:14 2025-01-13 22:47:16 JO01IN > JO20KC 208.1 miles 117° 2025-01-13 22:47:16
ON4MAX-2 6 2025-01-13 21:32:14 2025-01-18 14:53:44 JO01IN > JO20TI 229.4 miles 109° 2025-01-18 14:53:44
MB7UVC 220 2025-01-12 08:30:02 2025-01-21 17:12:47 JO01IN > JO02RH 61.4 miles 30° 2025-01-21 16:57:53
ON0TVO 2 2025-01-13 18:47:02 2025-01-13 19:17:08 JO01IN > JO11UB 133.7 miles 104° 2025-01-13 19:17:08
MB7UWM 84 2025-01-04 04:48:56 2025-01-12 05:59:53 JO01IN > JO01IS 16.7 miles 359° 2025-01-12 05:59:53
ON0NR-10 6 2025-01-13 21:32:17 2025-01-16 15:50:55 JO01IN > JO20KJ 196.3 miles 112° 2025-01-16 15:50:55
MB7UC 875 2024-12-31 23:14:35 2025-01-27 00:50:04 JO01IN > IO92XA 44.2 miles 317° 2025-01-27 00:50:04
MB7UBZ 1 2025-01-15 23:19:56 2025-01-15 23:19:56 JO01IN > IO91ES 99.8 miles 280° 2025-01-15 23:19:56
MB7UMK-10 1 2025-01-16 00:04:59 2025-01-16 00:04:59 JO01IN > IO92PB 72.0 miles 301° 2025-01-16 00:04:59
MB7UWK-10 1 2025-01-20 22:58:27 2025-01-20 22:58:27 JO01IN > JO01DI 21.3 miles 231° 2025-01-20 22:58:27
M0WOF-1 2 2025-01-15 16:04:37 2025-01-16 04:50:30 JO01IN > IO82PH 155.3 miles 291° 2025-01-16 04:50:30
GB0SNB-1 181 2025-01-02 01:46:10 2025-01-26 10:34:18 JO01IN > JO01DQ 21.3 miles 294° 2025-01-26 10:34:18
G8PJH 104 2025-01-01 17:00:35 2025-01-25 16:48:12 JO01IN > JO01FS 17.6 miles 325° 2025-01-25 16:48:12
M0IXY 238 2025-01-06 07:36:53 2025-01-27 00:50:11 JO01IN > JO01FN 10.3 miles 282° 2025-01-27 00:50:11
MB7VM 55 2025-01-13 12:46:49 2025-01-19 18:10:10 JO01IN > IO80UU 137.6 miles 251° 2025-01-19 18:10:10
ON0ABT-2 155 2025-01-10 10:57:30 2025-01-23 20:30:50 JO01IN > JO11PC 116.3 miles 104° 2025-01-23 20:30:50
MB7UEY 3 2025-01-16 22:06:14 2025-01-17 16:07:16 JO01IN > JO02NH 54.2 miles 17° 2025-01-17 16:07:16
F1ZVV 47 2025-01-07 10:08:23 2025-01-19 13:24:51 JO01IN > JO00TR 70.1 miles 144° 2025-01-19 13:24:51
ON4JES-12 5 2025-01-19 13:39:51 2025-01-21 06:57:11 JO01IN > JO10HU 94.9 miles 119° 2025-01-21 06:57:11
ON4JES-14 3 2025-01-13 01:16:03 2025-01-13 21:47:08 JO01IN > JO10HU 94.9 miles 119° 2025-01-13 21:47:08
G5BSD-1 1 2025-01-15 08:49:07 2025-01-15 08:49:07 JO01IN > IO91WF 43.2 miles 239° 2025-01-15 08:49:07
MB7UCH 1 2025-01-08 16:10:11 2025-01-08 16:10:11 JO01IN > JO01FR 16.7 miles 322° 2025-01-08 16:10:11
MB7UHA 90 2025-01-01 04:29:53 2025-01-19 08:54:40 JO01IN > JO01HW 28.3 miles 352° 2025-01-19 08:54:40
MB7UCL 824 2024-12-31 19:29:23 2025-01-27 00:35:07 JO01IN > JO01NT 25.9 miles 46° 2025-01-27 00:35:07
MB7UCE 1887 2024-12-31 19:14:17 2025-01-27 00:50:03 JO01IN > JO01KV 26.4 miles 18° 2025-01-27 00:50:03
MB7UVB 766 2025-01-01 01:29:45 2025-01-27 00:50:04 JO01IN > JO01QJ 32.0 miles 110° 2025-01-27 00:50:04
MB7UUK 1 2025-01-18 08:23:16 2025-01-18 08:23:16 JO01IN > IO91SR 50.5 miles 285° 2025-01-18 08:23:16
MB7UMN 242 2024-12-31 23:59:40 2025-01-26 00:33:40 JO01IN > JO01IR 12.8 miles 354° 2025-01-26 00:33:40
MB7UM 15 2025-01-13 17:01:51 2025-01-14 04:02:29 JO01IN > JO02AF 54.5 miles 329° 2025-01-14 04:02:29
MB7UAI 2 2025-01-17 13:07:14 2025-01-19 07:54:34 JO01IN > JO02NB 40.8 miles 26° 2025-01-19 07:54:34
MB7UKR 7 2025-01-13 20:17:04 2025-01-17 19:37:36 JO01IN > JO02HK 63.0 miles 357° 2025-01-17 19:37:36
F1PRY-14 2 2025-01-13 21:32:20 2025-01-14 03:32:41 JO01IN > JN09XI 160.5 miles 159° 2025-01-14 03:32:41
MB7UYE-10 825 2024-12-31 19:44:18 2025-01-26 23:50:00 JO01IN > JO01LE 25.8 miles 159° 2025-01-26 23:50:00
M0ZZX-5 372 2025-01-01 21:00:44 2025-01-26 18:04:43 JO01IN > JO01PW 37.1 miles 41° 2025-01-26 18:04:43
MB7UVR 3 2025-01-13 08:01:31 2025-01-20 12:26:13 JO01IN > IO91TU 49.8 miles 295° 2025-01-20 12:26:13

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 MB7USE
callsign pkts first heard - EST last heard longest (rx => tx) longest at - EST
M0NAS-9 7 2025-01-06 07:16:14 2025-01-20 12:38:45 JO01IX > JO01IN 31.3 miles 358° 2025-01-11 06:54:49
MB7UG 418 2025-01-03 02:18:55 2025-01-25 23:19:35 IO91ME > JO01IN 76.4 miles 252° 2025-01-25 23:19:35
G4KWT-7 1 2025-01-17 05:58:29 2025-01-17 05:58:29 IO91KF > JO01IN 81.4 miles 255° 2025-01-17 05:58:29
M0XDC-9 16 2025-01-07 03:46:07 2025-01-23 08:46:54 JO01DQ > JO01IN 19.6 miles 296° 2025-01-23 08:28:10
MB7UUE 36 2025-01-03 22:02:13 2025-01-25 17:58:26 JO01DN > JO01IN 18.9 miles 275° 2025-01-25 17:58:26
G0UXG-9 8 2025-01-25 05:57:42 2025-01-26 05:02:48 JO00FW > JO01IN 41.7 miles 194° 2025-01-26 04:56:48
M0ZPG 28 2025-01-08 12:03:27 2025-01-26 03:32:33 IO91VJ > JO01IN 41.2 miles 255° 2025-01-12 04:53:16
F8KGJ-4 2 2025-01-13 21:43:37 2025-01-14 02:14:01 IN98QX > JO01IN 187.2 miles 199° 2025-01-14 02:14:01
F8KCS-2 5 2025-01-14 03:41:11 2025-01-14 07:01:37 JN19RN > JO01IN 180.7 miles 138° 2025-01-14 07:01:37
F4KJL-4 1 2025-01-13 22:04:53 2025-01-13 22:04:53 JN09CR > JO01IN 128.5 miles 190° 2025-01-13 22:04:53
G6ZNW-9 3 2025-01-14 03:27:39 2025-01-19 04:38:56 JO01PE > JO01IN 35.3 miles 137° 2025-01-14 03:28:21
F6KFW-10 7 2025-01-13 19:07:44 2025-01-14 05:37:43 IN99EP > JO01IN 167.6 miles 219° 2025-01-14 05:37:43
F1CNB-4 6 2025-01-13 21:43:23 2025-01-13 23:38:56 JN09DM > JO01IN 140.8 miles 188° 2025-01-13 23:38:56
F6KFW-3 1 2025-01-13 21:26:40 2025-01-13 21:26:40 IN99BP > JO01IN 171.2 miles 222° 2025-01-13 21:26:40
F1ESA-2 4 2025-01-18 03:45:27 2025-01-18 06:45:28 JO10AX > JO01IN 68.8 miles 123° 2025-01-18 06:45:28
MB7UVC 11 2025-01-16 06:29:51 2025-01-18 12:13:38 JO02RH > JO01IN 61.4 miles 30° 2025-01-18 12:13:38
2E0YQC-9 48 2025-01-05 22:24:43 2025-01-26 22:49:19 JO01MC > JO01IN 34.3 miles 155° 2025-01-09 23:00:18
ON0TVO 1 2025-01-13 19:04:40 2025-01-13 19:04:40 JO11UB > JO01IN 133.7 miles 104° 2025-01-13 19:04:40
M1GEO-9 1 2025-01-24 17:12:36 2025-01-24 17:12:36 JO01BO > JO01IN 25.9 miles 281° 2025-01-24 17:12:36
MB7UWM 489 2024-12-31 19:03:51 2025-01-12 08:02:50 JO01IS > JO01IN 16.7 miles 359° 2025-01-12 08:02:50
M1CJE-7 1 2025-01-17 06:52:44 2025-01-17 06:52:44 IO81KS > JO01IN 164.5 miles 277° 2025-01-17 06:52:44
2E0KEZ-9 1 2025-01-10 12:03:42 2025-01-10 12:03:42 JO01KD > JO01IN 29.9 miles 166° 2025-01-10 12:03:42
ON0ANT-10 18 2025-01-12 22:46:06 2025-01-16 23:00:59 JO21FF > JO01IN 161.5 miles 97° 2025-01-16 23:00:59
G6LTT-10 7 2025-01-12 04:58:56 2025-01-18 07:57:13 IO91VO > JO01IN 40.1 miles 277° 2025-01-18 07:57:13
MB7UC 268 2025-01-01 05:31:23 2025-01-27 00:31:18 JO02BG > JO01IN 57.0 miles 334° 2025-01-11 16:15:24
MB7VC 3 2025-01-15 18:18:10 2025-01-16 07:48:11 IO92TL > JO01IN 79.5 miles 326° 2025-01-16 07:48:11
M0XDC-13 721 2024-12-31 19:47:20 2025-01-27 00:38:52 JO01DQ > JO01IN 19.4 miles 297° 2025-01-27 00:38:52
G6LTT-9 21 2025-01-01 07:17:02 2025-01-26 05:23:12 IO91TT > JO01IN 51.4 miles 291° 2025-01-16 11:57:47
G1VWC-9 1 2025-01-04 10:36:28 2025-01-04 10:36:28 JO01LU > JO01IN 22.9 miles 29° 2025-01-04 10:36:28
M7BXR-9 9 2025-01-01 04:24:22 2025-01-10 06:42:41 JO01PJ > JO01IN 27.2 miles 115° 2025-01-10 06:42:41
GB3BK 687 2024-12-31 19:04:52 2025-01-23 12:32:04 JO01AK > JO01IN 31.1 miles 255° 2025-01-23 12:32:04
G8PJH 470 2025-01-01 09:59:10 2025-01-25 16:43:25 JO01FS > JO01IN 17.6 miles 325° 2025-01-25 16:43:25
F5MYQ 5 2025-01-13 15:25:18 2025-01-19 16:03:42 JO10GW > JO01IN 87.8 miles 117° 2025-01-19 16:03:42
G4MHU-9 8 2025-01-02 14:02:52 2025-01-16 13:44:23 JO01QD > JO01IN 39.4 miles 135° 2025-01-06 06:50:02
M0IXY 443 2025-01-06 09:53:55 2025-01-27 00:44:50 JO01FN > JO01IN 10.3 miles 282° 2025-01-27 00:44:50
MB7VM 2 2025-01-15 14:37:12 2025-01-15 15:22:13 IO80UU > JO01IN 137.6 miles 251° 2025-01-15 15:22:13
2E0XLS-9 78 2025-01-01 13:37:44 2025-01-26 11:09:35 JO01JV > JO01IN 24.4 miles 12° 2025-01-17 06:49:20
M6LHQ-9 50 2025-01-02 01:09:59 2025-01-24 11:55:51 JO01AK > JO01IN 28.8 miles 255° 2025-01-20 11:15:05
G7MSG-9 52 2025-01-21 10:09:03 2025-01-23 11:16:16 JO01DD > JO01IN 32.6 miles 212° 2025-01-21 11:00:11
ON0ABT-2 109 2025-01-13 00:55:06 2025-01-21 09:07:31 JO11PC > JO01IN 116.3 miles 104° 2025-01-21 09:07:31
F1ZVV 90 2025-01-03 00:31:20 2025-01-21 10:31:43 JO00TR > JO01IN 70.1 miles 144° 2025-01-21 10:31:43
G4AQV-9 18 2025-01-23 08:53:04 2025-01-23 09:35:56 JO01CM > JO01IN 22.5 miles 264° 2025-01-23 08:53:04
2E0UCB-9 2 2025-01-10 02:40:45 2025-01-17 12:41:14 JO02NA > JO01IN 38.6 miles 30° 2025-01-17 12:41:14
G7PEB-9 120 2025-01-25 07:49:06 2025-01-26 13:58:00 JO01CJ > JO01IN 25.3 miles 247° 2025-01-26 13:58:00
2E0HSV-9 67 2025-01-03 06:41:03 2025-01-04 15:50:59 JO01CK > JO01IN 21.7 miles 248° 2025-01-04 15:38:51
G6UQZ-9 14 2025-01-02 01:48:26 2025-01-02 14:01:37 JO01BI > JO01IN 26.7 miles 242° 2025-01-02 13:17:54
MB7UCH 5 2025-01-01 09:05:57 2025-01-26 09:40:04 JO01FR > JO01IN 16.7 miles 322° 2025-01-26 09:40:04
MB7UHA 72 2025-01-04 03:33:11 2025-01-27 00:01:53 JO01HW > JO01IN 28.3 miles 352° 2025-01-27 00:01:53
MB7UCL 1350 2025-01-01 01:00:23 2025-01-27 00:57:04 JO01NT > JO01IN 25.9 miles 46° 2025-01-27 00:57:04
MB7UCE 515 2025-01-01 11:03:06 2025-01-27 00:08:56 JO01KV > JO01IN 26.4 miles 18° 2025-01-27 00:08:56
MB7UMN 722 2024-12-31 22:34:44 2025-01-27 00:49:09 JO01IR > JO01IN 12.8 miles 354° 2025-01-27 00:49:09
G7MTQ 1 2025-01-18 04:06:31 2025-01-18 04:06:31 JO02NE > JO01IN 46.0 miles 21° 2025-01-18 04:06:31
M7OSF-7 101 2025-01-01 09:58:47 2025-01-25 11:43:32 JO01IH > JO01IN 14.7 miles 180° 2025-01-24 11:27:10
MB7UAI 12 2025-01-10 19:06:10 2025-01-18 02:46:21 JO02NB > JO01IN 40.8 miles 26° 2025-01-18 02:46:21
2E0SGG-1 727 2024-12-31 20:47:26 2025-01-26 11:03:47 JO01BK > JO01IN 24.7 miles 253° 2025-01-11 06:53:39
G6VBJ-7 13 2025-01-07 13:56:24 2025-01-24 07:12:42 IO91SM > JO01IN 52.0 miles 267° 2025-01-24 05:35:00
M0VFC-8 1 2025-01-11 16:15:24 2025-01-11 16:15:24 JO02BG > JO01IN 57.0 miles 334° 2025-01-11 16:15:24
MB7UKR 16 2025-01-14 20:46:57 2025-01-18 06:03:22 JO02HK > JO01IN 63.0 miles 357° 2025-01-18 06:03:22
M7FHN-7 1 2025-01-14 07:44:40 2025-01-14 07:44:40 JO01JF > JO01IN 23.2 miles 167° 2025-01-14 07:44:40
G0CXW 3 2025-01-24 17:44:38 2025-01-26 15:48:49 JO01JM > JO01IN 3.7 miles 105° 2025-01-26 15:48:49
M0HOJ-9 10 2025-01-25 06:02:11 2025-01-25 07:26:37 JO01IF > JO01IN 21.8 miles 182° 2025-01-25 07:26:37
F1PRY-14 2 2025-01-13 22:11:52 2025-01-13 22:31:51 JN09XI > JO01IN 160.5 miles 159° 2025-01-13 22:31:51
2E0MYZ-9 147 2025-01-11 10:51:20 2025-01-17 01:06:51 JO01DU > JO01IN 29.1 miles 320° 2025-01-14 10:26:23
MB7UYE-10 778 2024-12-31 19:14:03 2025-01-27 00:45:51 JO01LE > JO01IN 25.8 miles 159° 2025-01-27 00:45:51
2E0PBY 159 2024-12-31 19:00:52 2025-01-26 18:56:09 JD08AR > JO01IN 7099.3 miles 180° 2025-01-20 00:34:18
M6IPH-9 27 2025-01-02 05:51:40 2025-01-17 10:28:54 JO01LD > JO01IN 28.9 miles 160° 2025-01-11 12:34:35
M7WIW 4 2025-01-12 01:39:15 2025-01-17 13:17:08 IO91UT > JO01IN 48.1 miles 293° 2025-01-17 13:17:08
M1DKL-7 2 2025-01-23 12:36:23 2025-01-23 12:42:58 JO01HN > JO01IN 3.6 miles 267° 2025-01-23 12:42:58
2E0KFG-9 809 2025-01-08 03:50:52 2025-01-16 11:37:51 LO71VU > JO01IN 2298.8 miles 67° 2025-01-15 07:15:24

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