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 KB9WZM-10 - show graphs
Comment: (KB9WZM-10 W3,WIn Monroe,WI UIDIGI 1.9B3)1
Last beacon: UIDIGI 1.9
Location: 42°34.58' N 89°41.58' W - locator EN52DN68UH - show map
3.3 miles Southwest bearing 238° from Monroe, Green County, Wisconsin, United States [?]
12.7 miles Southwest bearing 203° from Monticello, Green County, Wisconsin, United States
37.3 miles Southwest bearing 203° from Madison, Dane County, Wisconsin, United States
90.0 miles Northwest bearing 309° from Aurora, Kane County, Illinois, United States
Last position: 2024-11-21 11:58:32 EST (2m29s ago)
2024-11-21 10:58:32 CST local time at Monroe, United States [?]
Device: IW3FQG: UIdigi (digi)
Last path: KB9WZM-10>APNU19 via qAR,WJ9H
Positions stored: 1
Packet rate: 416 seconds between packets on average during 20405 seconds.
APRS digipeater – Statistics for 2024-11:
Stations heard directly: 83 on radio path – show map
Last heard a station directly: 2024-11-21 11:58:19 EST (2m42s ago)
Normal receiver range estimate: 124 miles (Updated: 2024-11-21 09:38:19 EST)
Position packets heard directly: 3037 on radio path
Stations near current position of KB9WZM-10 - show more
callsign distance last heard - EST      callsign distance last heard - EST
WO9U-D16.5 miles 348°2024-11-21 11:47:48 N9VK16.9 miles 169°2024-11-08 11:36:54
N9LHF17.1 miles 169°2024-11-21 11:58:15 N9VK-917.8 miles 170°2024-11-20 17:25:24
K9KKN-D18.0 miles 152°2024-11-20 21:14:04 K9KKN18.1 miles 152°2024-11-20 21:24:50
K9KKN-718.1 miles 152°2024-11-18 15:35:42 KE9BWL18.1 miles 152°2024-11-14 18:09:27
K9KKN-518.1 miles 152°2024-11-19 20:21:32 KC9GCR19.2 miles 172°2024-11-12 18:37:37
EW849719.4 miles 231°2024-11-21 12:00:49 N9XKH-1019.9 miles 105°2024-11-12 11:41:02
KB9ZDD-420.2 miles 133°2024-11-17 16:21:18 KC9GWK-1020.2 miles 176°2024-11-20 11:53:49
GW499421.1 miles 43°2024-11-21 11:56:48 KD9ZIY21.3 miles 119°2024-11-10 19:06:51
DW547322.9 miles 227°2024-11-21 11:57:35 K9NSE-323.2 miles 38°2024-11-01 13:19:45
FW578430.0 miles 102°2024-11-21 12:00:42
Stations which heard KB9WZM-10 directly on radio –
callsign pkts first heard - EST last heard longest (tx => rx) longest at - EST
W9LTA-10 28 2024-11-02 03:21:55 2024-11-18 19:42:55 EN52DN > EN54FA 99.9 miles 4° 2024-11-18 19:42:55
WT9M-5 5 2024-11-09 00:40:36 2024-11-13 03:52:14 EN52DN > EN53HB 37.1 miles 22° 2024-11-13 03:52:14
KC0MGG-3 1 2024-11-07 06:35:39 2024-11-07 06:35:39 EN52DN > EM39WG 262.6 miles 210° 2024-11-07 06:35:39
W9GO-3 1 2024-11-09 00:10:31 2024-11-09 00:10:31 EN52DN > EN60WL 234.1 miles 127° 2024-11-09 00:10:31
KC9FWE-10 8 2024-11-07 04:36:54 2024-11-18 03:06:14 EN52DN > EN53IT 86.0 miles 12° 2024-11-18 03:06:14
W9PVR-12 1 2024-11-08 10:08:52 2024-11-08 10:08:52 EN52DN > EN43SH 63.0 miles 324° 2024-11-08 10:08:52
W9RCG-2 3 2024-11-07 09:22:50 2024-11-18 07:37:12 EN52DN > EN53WC 88.0 miles 64° 2024-11-18 07:37:12
N9LKH-1 4 2024-11-17 23:35:52 2024-11-18 00:08:44 EN52DN > EN63BB 98.1 miles 69° 2024-11-18 00:08:44
KA9SZX-1 7 2024-11-01 13:19:25 2024-11-15 23:30:10 EN52DN > EN40PK 157.1 miles 199° 2024-11-15 23:30:10
W9AZ-1 2 2024-11-16 02:00:29 2024-11-16 03:30:39 EN52DN > EN61BC 136.5 miles 137° 2024-11-16 03:30:39
KB9SCT-10 4 2024-11-08 09:08:50 2024-11-18 01:07:29 EN52DN > EN43KB 78.7 miles 296° 2024-11-18 01:07:29
N9GPY-1 2 2024-11-08 23:33:29 2024-11-08 23:40:26 EN52DN > EN61SF 192.2 miles 118° 2024-11-08 23:40:26
WI9WIN-13 15 2024-11-03 02:24:31 2024-11-19 01:48:19 EN52DN > EN42WX 35.3 miles 321° 2024-11-19 01:48:19
W8MAI-15 3 2024-11-09 02:23:32 2024-11-18 04:17:09 EN52DN > EN62VB 180.1 miles 100° 2024-11-18 04:17:09
TNGNXI 1 2024-11-07 07:35:58 2024-11-07 07:35:58 EN52DN > EM29KC 370.9 miles 232° 2024-11-07 07:35:58
K9IQP-13 281 2024-11-01 10:30:19 2024-11-18 05:39:57 EN52DN > EN62AH 90.4 miles 102° 2024-11-18 05:39:57
KW2DX-3 406 2024-10-31 20:00:03 2024-11-21 07:45:12 EN52DN > EN41VV 53.7 miles 208° 2024-11-21 07:45:12
KC8RFE-3 6 2024-11-07 03:05:12 2024-11-18 17:47:23 EN52DN > EN50PA 183.2 miles 163° 2024-11-18 17:47:23
N9XKH-10 4 2024-11-02 06:51:34 2024-11-11 16:48:11 EN52DN > EN52IM 19.9 miles 105° 2024-11-11 16:48:11
KS9A-10 6 2024-11-08 03:08:02 2024-11-09 05:41:09 EN52DN > EN40XN 140.2 miles 187° 2024-11-09 05:41:09
W9AUV 2 2024-11-16 06:46:21 2024-11-16 10:26:25 EN52DN > EN51TU 84.7 miles 126° 2024-11-16 10:26:25
W0GN-1 8 2024-11-02 01:20:52 2024-11-13 09:52:59 EN52DN > EN42KD 79.6 miles 248° 2024-11-13 09:52:59
KC9QPJ-10 36 2024-11-08 00:33:04 2024-11-18 09:37:14 EN52DN > EN52LK 34.7 miles 104° 2024-11-18 09:37:14
WJ9H 2453 2024-10-31 20:10:04 2024-11-21 11:58:32 EN52DN > EN42WX 34.6 miles 321° 2024-11-21 11:58:32
KC9EUU 10 2024-11-03 17:41:17 2024-11-20 17:58:13 EN52DN > EN52MS 40.9 miles 70° 2024-11-20 17:58:13
W8AGT-10 1 2024-11-18 01:27:06 2024-11-18 01:27:06 EN52DN > EN72AT 192.1 miles 84° 2024-11-18 01:27:06
N9MUC 4 2024-11-08 04:38:15 2024-11-18 02:38:42 EN52DN > EN52SB 73.0 miles 119° 2024-11-18 02:38:42
W0CBL-1 4 2024-11-01 07:20:15 2024-11-16 12:56:30 EN52DN > EN30RG 218.6 miles 224° 2024-11-16 12:56:30
N9VHT-3 368 2024-11-01 01:48:02 2024-11-21 11:08:31 EN52DN > EN52DX 28.7 miles 355° 2024-11-21 11:08:31
KC9IFF-1 23 2024-11-01 00:48:33 2024-11-19 14:48:22 EN52DN > EN53CA 31.4 miles 348° 2024-11-19 14:48:22
KB9OIV-2 192 2024-11-01 07:40:15 2024-11-20 00:17:55 EN52DN > EN62BQ 94.0 miles 85° 2024-11-20 00:17:55
KB9PVH-5 13 2024-11-09 16:42:26 2024-11-10 16:44:11 EN52DN > EN53OI 68.8 miles 40° 2024-11-10 16:44:11
W9TAZ-1 2 2024-11-09 03:41:01 2024-11-09 04:41:05 EN52DN > EN50HP 133.4 miles 174° 2024-11-09 04:41:05
WB0VHB-1 1 2024-11-09 04:41:05 2024-11-09 04:41:05 EN52DN > EN41EA 146.6 miles 223° 2024-11-09 04:41:05
KD9VQI-10 1 2024-11-18 13:42:10 2024-11-18 13:42:10 EN52DN > EN64IX 204.9 miles 35° 2024-11-18 13:42:10
WX9WL-15 15 2024-11-01 19:21:52 2024-11-19 11:05:12 EN52DN > EN51FU 49.2 miles 170° 2024-11-19 11:05:12
WI9ELK-10 75 2024-11-01 14:19:32 2024-11-19 10:09:53 EN52DN > EN52RM 58.7 miles 92° 2024-11-19 10:09:53
WD9HCF-3 150 2024-11-01 02:30:10 2024-11-17 15:56:56 EN52DN > EN50CX 110.1 miles 183° 2024-11-17 15:56:56
WI9HRO-1 20 2024-11-16 04:26:19 2024-11-18 06:07:10 EN52DN > EN63AD 95.1 miles 65° 2024-11-18 06:07:10
W9CQO-1 8 2024-11-16 04:37:58 2024-11-18 03:39:04 EN52DN > EN53XH 99.1 miles 59° 2024-11-18 03:39:04

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 KB9WZM-10 –
callsign pkts first heard - EST last heard longest (rx => tx) longest at - EST
W9LTA-10 19 2024-11-07 05:22:41 2024-11-19 06:59:52 EN54FA > EN52DN 99.9 miles 4° 2024-11-19 06:59:52
W9MKS-15 1 2024-11-18 17:17:51 2024-11-18 17:17:51 EN51ME > EN52DN 102.5 miles 159° 2024-11-18 17:17:51
WT9M-5 159 2024-11-01 13:14:16 2024-11-19 20:21:26 EN53HB > EN52DN 37.1 miles 22° 2024-11-19 20:21:26
N9LOE 22 2024-11-12 13:03:38 2024-11-13 13:06:44 EN52EA > EN52DN 38.1 miles 177° 2024-11-12 13:03:38
KA9BAB-11 1 2024-11-09 06:17:43 2024-11-09 06:17:43 EN44UX > EN52DN 168.1 miles 350° 2024-11-09 06:17:43
KC9FWE-10 2 2024-11-07 05:17:49 2024-11-18 11:21:08 EN53IT > EN52DN 86.0 miles 12° 2024-11-18 11:21:08
N9QIP-7 40 2024-11-07 05:37:44 2024-11-19 19:23:11 EN53OE > EN52DN 63.8 miles 48° 2024-11-19 19:23:11
K9UTQ-2 1 2024-11-03 13:32:54 2024-11-03 13:32:54 EN52HW > EN52DN 29.0 miles 31° 2024-11-03 13:32:54
N9NIC-9 4 2024-11-03 12:10:36 2024-11-03 12:34:40 EN52LV > EN52DN 38.2 miles 57° 2024-11-03 12:10:36
W9RCG-2 6 2024-11-07 10:32:58 2024-11-19 17:37:51 EN53WC > EN52DN 88.0 miles 64° 2024-11-19 17:37:51
N9LKH-1 10 2024-11-07 05:41:07 2024-11-19 19:04:59 EN63BB > EN52DN 98.1 miles 69° 2024-11-19 19:04:59
KF9TS-1 1 2024-11-13 07:47:35 2024-11-13 07:47:35 EN54OT > EN52DN 160.7 miles 15° 2024-11-13 07:47:35
W9MQB 10 2024-11-03 11:24:38 2024-11-18 10:58:23 EN53OB > EN52DN 55.7 miles 54° 2024-11-18 10:58:23
W9AZ-1 4 2024-11-07 06:02:54 2024-11-18 18:16:22 EN61BC > EN52DN 136.5 miles 137° 2024-11-18 18:16:22
KB9SCT-10 3 2024-11-07 09:20:25 2024-11-12 15:06:14 EN43KB > EN52DN 78.7 miles 296° 2024-11-12 15:06:14
WI9WIN-13 81 2024-11-02 03:14:19 2024-11-19 19:42:08 EN42WX > EN52DN 35.3 miles 321° 2024-11-19 19:42:08
K8OEC-11 1 2024-11-18 10:28:50 2024-11-18 10:28:50 EN62VX > EN52DN 178.2 miles 80° 2024-11-18 10:28:50
K8COP-4 1 2024-11-18 10:46:38 2024-11-18 10:46:38 EN63TQ > EN52DN 184.3 miles 65° 2024-11-18 10:46:38
K8COP-3 2 2024-11-18 10:58:57 2024-11-18 11:27:50 EN63TJ > EN52DN 179.0 miles 70° 2024-11-18 11:27:50
KC9QPJ-9 7 2024-11-10 14:43:40 2024-11-19 18:51:24 EN52LK > EN52DN 35.9 miles 106° 2024-11-18 22:17:16
W9YB-1 1 2024-11-09 00:01:34 2024-11-09 00:01:34 EN60NK > EN52DN 206.9 miles 135° 2024-11-09 00:01:34
KW2DX-3 34 2024-11-01 14:07:43 2024-11-18 03:09:34 EN41VV > EN52DN 53.7 miles 208° 2024-11-18 03:09:34
N9UUP-9 4 2024-11-07 12:36:35 2024-11-18 17:31:09 EN53KC > EN52DN 46.2 miles 37° 2024-11-18 07:53:28
KC8RFE-3 3 2024-11-18 17:34:53 2024-11-18 18:51:15 EN50PA > EN52DN 183.2 miles 163° 2024-11-18 18:51:15
HAMLTN 1 2024-11-18 10:37:48 2024-11-18 10:37:48 EN62XQ > EN52DN 187.5 miles 86° 2024-11-18 10:37:48
N9XKH-10 26 2024-11-01 10:41:42 2024-11-12 11:41:02 EN52IM > EN52DN 19.9 miles 105° 2024-11-12 11:41:02
W9LRT-3 1 2024-11-18 23:08:42 2024-11-18 23:08:42 EN61OP > EN52DN 162.8 miles 112° 2024-11-18 23:08:42
W9RLL-9 1 2024-11-20 16:17:48 2024-11-20 16:17:48 EN52KX > EN52DN 40.1 miles 49° 2024-11-20 16:17:48
KS9A-10 2 2024-11-18 20:07:07 2024-11-18 20:11:41 EN40XN > EN52DN 140.2 miles 187° 2024-11-18 20:11:41
W9AUV 1 2024-11-16 08:23:20 2024-11-16 08:23:20 EN51TU > EN52DN 84.7 miles 126° 2024-11-16 08:23:20
WX9JC-9 1 2024-11-04 18:34:36 2024-11-04 18:34:36 EN52MP > EN52DN 36.3 miles 84° 2024-11-04 18:34:36
WJ9H 776 2024-10-31 20:03:14 2024-11-21 11:58:19 EN42WX > EN52DN 34.6 miles 321° 2024-11-21 11:58:19
KC9EUU 133 2024-11-01 05:48:17 2024-11-20 21:26:05 EN52MS > EN52DN 40.9 miles 70° 2024-11-20 21:26:05
N9MUC 4 2024-11-07 06:55:40 2024-11-12 23:56:37 EN52SB > EN52DN 73.0 miles 119° 2024-11-12 23:56:37
N9VHT-3 92 2024-11-01 14:09:53 2024-11-19 20:15:39 EN52DX > EN52DN 28.7 miles 355° 2024-11-19 20:15:39
WJ9H-9 93 2024-11-19 11:58:02 2024-11-19 17:02:02 EN52HT > EN52DN 23.6 miles 44° 2024-11-19 17:02:02
W9ASS-9 5 2024-11-07 12:39:44 2024-11-17 21:28:58 EN52QJ > EN52DN 56.2 miles 102° 2024-11-17 21:28:58
N9MXQ-9 1 2024-11-09 15:32:10 2024-11-09 15:32:10 EN52MH > EN52DN 40.9 miles 115° 2024-11-09 15:32:10
N9NWI-1 6 2024-11-01 13:14:16 2024-11-18 16:27:22 EN50IA > EN52DN 178.5 miles 173° 2024-11-18 16:27:22
KA9BAB-7 1 2024-11-18 11:16:11 2024-11-18 11:16:11 EN54WA > EN52DN 125.0 miles 38° 2024-11-18 11:16:11
KC9IFF-1 23 2024-11-07 11:55:32 2024-11-19 08:03:19 EN53CA > EN52DN 31.4 miles 348° 2024-11-19 08:03:19
KD5TXS-14 16 2024-11-01 16:00:16 2024-11-14 10:32:23 EN51LR > EN52DN 68.3 miles 149° 2024-11-07 10:32:18
N9VK-9 57 2024-11-02 19:13:34 2024-11-20 17:25:24 EN52CD > EN52DN 31.0 miles 193° 2024-11-02 19:13:34
W9TAZ-1 3 2024-11-07 09:58:22 2024-11-19 19:02:15 EN50HP > EN52DN 133.4 miles 174° 2024-11-19 19:02:15
KC9CMZ-9 10 2024-11-19 10:28:42 2024-11-19 13:21:08 EN52KX > EN52DN 40.1 miles 44° 2024-11-19 11:21:08
WX9EMS-9 1 2024-11-18 10:19:33 2024-11-18 10:19:33 EN52QP > EN52DN 54.6 miles 85° 2024-11-18 10:19:33
AE0IT-9 1 2024-11-07 12:27:10 2024-11-07 12:27:10 EN53BA > EN52DN 31.3 miles 345° 2024-11-07 12:27:10
N9UUP-1 8 2024-11-07 05:50:19 2024-11-18 04:51:58 EN53SB > EN52DN 71.4 miles 61° 2024-11-18 04:51:58
KD9VQI-9 2 2024-11-13 19:13:00 2024-11-18 13:18:11 EN64ER > EN52DN 183.2 miles 34° 2024-11-18 13:18:11
KD9VQI-10 1 2024-11-09 03:45:28 2024-11-09 03:45:28 EN64IX > EN52DN 204.9 miles 35° 2024-11-09 03:45:28
W5WYO-14 5 2024-11-19 21:39:50 2024-11-19 22:07:09 EN52KX > EN52DN 40.1 miles 49° 2024-11-19 22:01:14
WX9WL-15 71 2024-11-01 13:23:12 2024-11-20 21:21:29 EN51FU > EN52DN 49.2 miles 170° 2024-11-20 21:21:29
WB0KHQ-1 2 2024-11-07 10:00:29 2024-11-07 12:15:31 EN42FA > EN52DN 103.1 miles 249° 2024-11-07 12:15:31
WI9ELK-10 44 2024-11-07 11:28:51 2024-11-19 19:39:47 EN52RM > EN52DN 58.7 miles 92° 2024-11-19 19:39:47
WD9HCF-3 8 2024-11-09 03:17:47 2024-11-18 18:35:59 EN50CX > EN52DN 110.1 miles 183° 2024-11-18 18:35:59
K9DJR-9 19 2024-11-08 12:11:44 2024-11-10 12:13:33 EN52LF > EN52DN 40.2 miles 128° 2024-11-08 12:11:44
N0VCE-9 9 2024-11-18 13:00:59 2024-11-19 14:37:43 EN42SK > EN52DN 39.6 miles 255° 2024-11-19 14:37:43
KD9WSD-7 4 2024-11-01 20:38:18 2024-11-17 16:27:20 EN52RN > EN52DN 56.4 miles 89° 2024-11-17 16:27:20
WI9HRO-1 5 2024-11-07 07:19:31 2024-11-18 08:35:44 EN63AD > EN52DN 95.1 miles 65° 2024-11-18 08:35:44
KC9UNZ-9 1 2024-11-12 19:56:53 2024-11-12 19:56:53 EN53GA > EN52DN 32.5 miles 21° 2024-11-12 19:56:53
KC9JVN-9 1 2024-11-19 00:49:39 2024-11-19 00:49:39 EN53DA > EN52DN 29.3 miles 2° 2024-11-19 00:49:39
N9WWR 3 2024-11-18 03:21:23 2024-11-18 11:07:13 EN62CT > EN52DN 96.6 miles 79° 2024-11-18 11:07:13
N9QIP-3 8 2024-11-15 11:28:35 2024-11-16 18:00:35 EN52KX > EN52DN 40.1 miles 48° 2024-11-16 15:08:14
KF0LMU-9 2 2024-11-01 04:09:15 2024-11-01 04:57:48 EN52LV > EN52DN 38.3 miles 54° 2024-11-01 04:09:15
N9MXQ 97 2024-11-01 16:21:41 2024-11-20 18:33:13 EN52NH > EN52DN 44.7 miles 115° 2024-11-19 05:31:08
W9GFD-3 9 2024-11-07 05:23:55 2024-11-18 16:31:55 EN41XD > EN52DN 99.2 miles 191° 2024-11-18 16:31:55
N9VK 16 2024-11-05 11:45:34 2024-11-08 11:36:54 EN52EI > EN52DN 16.9 miles 169° 2024-11-08 11:36:54
KA9I-9 1 2024-11-03 05:27:48 2024-11-03 05:27:48 EN52LT > EN52DN 38.2 miles 66° 2024-11-03 05:27:48
KC9MJE-1 1 2024-11-09 02:27:05 2024-11-09 02:27:05 EN50LV > EN52DN 120.2 miles 163° 2024-11-09 02:27:05
K9JPP-9 2 2024-11-05 17:54:20 2024-11-20 15:38:37 EN52MG > EN52DN 41.4 miles 118° 2024-11-20 15:38:37
W9BBB-1 2 2024-11-09 02:58:17 2024-11-16 06:10:37 EN51SB > EN52DN 122.0 miles 147° 2024-11-16 06:10:37
KF0LIH-9 2 2024-11-15 12:22:32 2024-11-15 12:24:33 EN52MP > EN52DN 36.6 miles 80° 2024-11-15 12:22:32
AK9F-9 12 2024-11-03 11:28:06 2024-11-20 19:52:06 EN52MI > EN52DN 39.9 miles 112° 2024-11-13 15:17:27
KB9ZDD-4 157 2024-11-01 08:45:00 2024-11-17 16:18:33 EN52HI > EN52DN 20.2 miles 133° 2024-11-10 09:09:08
N0AE-9 531 2024-10-31 21:04:47 2024-11-21 08:35:30 EN51GV > EN52DN 49.5 miles 164° 2024-11-19 01:34:36
KC9NJZ-12 1 2024-11-07 07:50:13 2024-11-07 07:50:13 EN52SH > EN52DN 64.7 miles 106° 2024-11-07 07:50:13
KC9EUU-9 16 2024-11-01 22:04:34 2024-11-19 19:00:09 EN52NR > EN52DN 42.1 miles 74° 2024-11-19 19:00:09
K9KKN 196 2024-11-04 15:20:28 2024-11-20 21:12:43 NM79GJ > EN52DN 6763.0 miles 357° 2024-11-20 21:12:43
K9KKN-7 7 2024-11-07 18:41:38 2024-11-18 15:35:42 EN52DG > EN52DN 20.2 miles 184° 2024-11-07 18:41:38
KD9BDL-7 2 2024-11-14 11:33:48 2024-11-14 11:43:48 EN52HV > EN52DN 26.9 miles 36° 2024-11-14 11:33:48
N9VPR 30 2024-11-05 20:04:18 2024-11-08 21:27:01 EN52LR > EN52DN 33.5 miles 69° 2024-11-08 21:27:01
KD9ZIY 1 2024-11-10 19:06:51 2024-11-10 19:06:51 EN52IK > EN52DN 21.3 miles 119° 2024-11-10 19:06:51
KE9BWL-7 89 2024-11-14 19:42:36 2024-11-19 07:29:53 EN52IG > EN52DN 28.9 miles 134° 2024-11-15 07:10:14

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