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APRS station WA6ODP-4 - show graphs
Location: 37°48.66' N 121°48.20' W - locator CM97CT34OP - show map
5.7 miles East bearing 97° from Blackhawk, Contra Costa County, California, United States [?]
8.6 miles East bearing 101° from Diablo, Contra Costa County, California, United States
32.9 miles North bearing 9° from San Jose, Santa Clara County, California, United States
33.7 miles East bearing 86° from San Francisco, San Francisco County, California, United States
Last position: 2025-01-20 03:25:03 EST (2m48s ago)
2025-01-20 00:25:03 PST local time at Blackhawk, United States [?]
Last telemetry: 2025-01-20 03:25:03 EST (2m48s ago) – show telemetry
DC: 1390, PC Board: 53.600, CPU: 28.900, Ambient: 44.500
Device: WB2OSZ: DireWolf
Last path: WA6ODP-4>APDW17 via qAR,WA6ODP-3
Positions stored: 8
Packet rate: 606 seconds between packets on average during 29703 seconds.
Items and objects originated: time
Other SSIDs: WA6ODP-3 WA6ODP-2 WA6ODP-11 WA6ODP-13 WA6ODP-15 WA6ODP-10 WA6ODP-12 WA6ODP-14 WA6ODP
APRS igate – Statistics for 2025-01:
Stations heard directly: 101 on radio path – show map
Last heard a station directly: 2025-01-20 00:49:26 EST (2h38m ago)
Normal receiver range estimate: 106 miles (Updated: 2025-01-20 00:49:26 EST)
Position packets heard directly: 3214 on radio path
Position packets sent to APRS-IS: 5509 – show map
Stations near current position of WA6ODP-4 - show more
callsign distance last heard - EST      callsign distance last heard - EST
W6/NC-1900.4 miles 309°2025-01-05 15:19:25 145.350MT1.1 miles 123°2025-01-20 03:18:03
K6KM4.9 miles 306°2025-01-16 16:40:49 KO6GKO-D5.3 miles 262°2025-01-20 03:11:02
AC6JA5.8 miles 264°2025-01-18 12:48:12 AC6JA-95.8 miles 264°2025-01-05 17:30:46
W6/NC-3386.2 miles 119°2025-01-04 15:50:38 KO6FLH-76.5 miles 263°2025-01-11 19:53:22
EW83316.8 miles 145°2025-01-20 03:15:47 AK6FR-87.0 miles 203°2025-01-05 20:01:35
W6VOM-127.1 miles 213°2025-01-16 03:13:39 DW35887.5 miles 36°2025-01-20 01:39:34
W6RAM-97.5 miles 176°2025-01-09 21:22:51 AJ6UU7.5 miles 184°2025-01-18 15:19:16
W6CX-37.7 miles 317°2025-01-20 03:24:35 W6CX7.8 miles 317°2025-01-20 03:15:38
GW28717.8 miles 145°2025-01-20 03:25:49 K6CLS-97.8 miles 310°2025-01-18 15:32:19
KN6KWB-97.9 miles 160°2025-01-14 20:10:07 147.06+MD8.0 miles 308°2025-01-20 02:31:53
Stations which heard WA6ODP-4 directly on radio –
callsign pkts first heard - EST last heard longest (tx => rx) longest at - EST
WA6ODP-3 253 2024-12-31 23:55:03 2025-01-20 03:25:03 CM97CT > CM97AP 12.0 miles 213° 2025-01-20 03:25:03
KQ6DI-4 7 2025-01-07 13:25:02 2025-01-16 12:55:02 CM97CT > CM98IG 41.2 miles 40° 2025-01-16 12:55:02
KI6ZHD-6 5 2025-01-01 05:27:35 2025-01-19 09:55:02 CM97CT > CM97AI 34.0 miles 198° 2025-01-19 09:55:02
KO6KL-10 1 2025-01-04 12:55:02 2025-01-04 12:55:02 CM97CT > CM97KR 39.5 miles 100° 2025-01-04 12:55:02
KO6KL-1 32 2024-12-31 20:25:02 2025-01-16 08:25:02 CM97CT > CM97KR 39.5 miles 100° 2025-01-16 08:25:02
GTOWN 21 2025-01-03 02:55:02 2025-01-17 23:25:03 CM97CT > CM98NW 91.9 miles 33° 2025-01-17 23:25:03
K6MRP-10 34 2024-12-31 19:55:02 2025-01-13 23:25:01 CM97CT > CM97CX 11.0 miles 8° 2025-01-13 23:25:01
K2DEN-10 160 2025-01-02 05:55:02 2025-01-20 01:55:02 CM97CT > CM87TQ 34.2 miles 255° 2025-01-20 01:55:02
KQ6DI-3 69 2025-01-03 02:25:02 2025-01-10 12:25:01 CM97CT > CM97BQ 9.0 miles 200° 2025-01-10 12:25:01
KA6PRW 168 2024-12-31 19:25:01 2025-01-19 07:25:02 CM97CT > CM98LO 69.4 miles 36° 2025-01-19 07:25:02
N6GEO-3 2 2025-01-09 20:25:02 2025-01-09 22:25:01 CM97CT > CM98VB 87.2 miles 79° 2025-01-09 22:25:01
FRNKLN 45 2025-01-01 09:25:01 2025-01-11 07:55:03 CM97CT > CM98GI 43.8 miles 28° 2025-01-11 07:55:03
K6CVH-2 67 2025-01-07 22:25:02 2025-01-20 00:25:02 CM97CT > CM98JW 85.4 miles 23° 2025-01-20 00:25:02
WB6ETY-3 14 2025-01-12 03:25:02 2025-01-19 20:55:03 CM97CT > CM97DP 12.2 miles 162° 2025-01-19 20:55:03
W6PKT-11 1 2025-01-18 04:25:02 2025-01-18 04:25:02 CM97CT > CM88PU 88.3 miles 326° 2025-01-18 04:25:02
MARS-2 5 2025-01-04 11:55:03 2025-01-09 14:00:58 CM97CT > CM88PA 51.9 miles 287° 2025-01-09 14:00:58
KN6ETB 33 2025-01-12 22:55:03 2025-01-20 02:55:03 CM97CT > CM98BI 37.7 miles 351° 2025-01-20 02:55:03
KD6PPM-4 2 2025-01-03 15:21:31 2025-01-03 16:55:56 CM97CT > CM97IT 27.8 miles 90° 2025-01-03 16:55:56

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.
Stations heard directly by WA6ODP-4
callsign pkts first heard - EST last heard longest (rx => tx) longest at - EST
W6BXN-3 19 2025-01-03 16:53:09 2025-01-09 10:10:01 CM97XM > CM97CT 97.0 miles 101° 2025-01-09 10:10:01
WR6ABD 57 2025-01-01 15:57:21 2025-01-18 13:55:59 CM97BC > CM97CT 48.4 miles 183° 2025-01-18 13:55:59
W6CX-3 140 2025-01-03 16:45:27 2025-01-14 01:24:53 CM97BV > CM97CT 7.7 miles 317° 2025-01-14 01:24:53
RANCHO 29 2025-01-03 09:42:56 2025-01-04 11:12:58 CM98QR > CM97CT 89.2 miles 45° 2025-01-04 11:12:58
K6FGA-1 487 2024-12-31 19:00:33 2025-01-19 13:30:32 CM99MF > CM97CT 108.9 miles 24° 2025-01-19 13:30:32
WA6ODP-3 2 2025-01-03 09:36:41 2025-01-03 14:36:31 CM97AP > CM97CT 12.0 miles 213° 2025-01-03 14:36:31
KD6GNB-1 2 2025-01-09 15:12:03 2025-01-18 13:55:03 CM87SP > CM97CT 36.6 miles 250° 2025-01-09 15:12:03
K7FED-9 58 2025-01-02 15:18:17 2025-01-17 15:27:30 CM97HQ > CM97CT 23.3 miles 110° 2025-01-03 17:55:35
WA6TOW-2 13 2025-01-03 14:08:47 2025-01-04 06:38:45 CM87SN > CM97CT 40.8 miles 245° 2025-01-04 06:38:45
K7FED-1 228 2024-12-31 21:55:27 2025-01-16 13:26:16 CM97FP > CM97CT 18.3 miles 127° 2025-01-16 13:26:16
KN6FW 1 2025-01-04 14:59:07 2025-01-04 14:59:07 CM97AQ > CM97CT 11.7 miles 217° 2025-01-04 14:59:07
KK6Q-9 1 2025-01-15 20:16:15 2025-01-15 20:16:15 CM97AU > CM97CT 7.6 miles 300° 2025-01-15 20:16:15
K7ZAC-9 4 2025-01-16 12:29:35 2025-01-16 12:56:47 CM98HC > CM97CT 30.5 miles 46° 2025-01-16 12:29:35
KS4FUN-9 1 2025-01-14 21:44:59 2025-01-14 21:44:59 CM97AT > CM97CT 10.2 miles 270° 2025-01-14 21:44:59
BKELEY 246 2025-01-01 01:26:51 2025-01-17 10:10:11 CM87VU > CM97CT 23.1 miles 279° 2025-01-17 10:10:11
K6BRR-9 4 2025-01-19 16:40:47 2025-01-19 16:55:25 CM97IW > CM97CT 29.0 miles 72° 2025-01-19 16:42:39
KE6RMN-9 21 2025-01-02 12:11:49 2025-01-02 21:23:37 CM98FG > CM97CT 34.8 miles 25° 2025-01-02 12:11:49
AC6JA 1 2025-01-01 21:15:42 2025-01-01 21:15:42 CM97BT > CM97CT 5.8 miles 264° 2025-01-01 21:15:42
W6TWW-9 5 2025-01-03 17:22:31 2025-01-13 23:19:04 CM98OR > CM97CT 82.9 miles 40° 2025-01-06 00:53:33
W0FZJ-9 1 2025-01-16 21:23:12 2025-01-16 21:23:12 CM97JU > CM97CT 32.1 miles 83° 2025-01-16 21:23:12
K6JRO-1 2 2025-01-03 15:11:27 2025-01-13 12:24:31 CM97MR > CM97CT 47.0 miles 98° 2025-01-03 15:11:27
KE6FOA 4 2025-01-03 21:50:11 2025-01-04 00:49:09 CM97NJ > CM97CT 59.4 miles 118° 2025-01-04 00:49:09
K6MBD-9 1 2025-01-08 10:00:25 2025-01-08 10:00:25 CM88QB > CM97CT 47.4 miles 290° 2025-01-08 10:00:25
K6RIK 6 2025-01-10 20:47:57 2025-01-10 23:23:11 CM97HP > CM97CT 24.9 miles 117° 2025-01-10 23:23:11
N6AMQ-2 3 2025-01-08 08:53:01 2025-01-08 13:53:02 CM87VK > CM97CT 33.8 miles 223° 2025-01-08 13:53:02
KJ6LNH-9 7 2025-01-11 22:00:37 2025-01-11 23:54:57 CM97DX > CM97CT 13.7 miles 25° 2025-01-11 23:48:34
ACARC-1 71 2025-01-01 01:30:53 2025-01-13 20:42:21 CM98NG > CM97CT 58.4 miles 58° 2025-01-13 20:42:21
W6SNO-9 12 2025-01-10 22:47:14 2025-01-12 22:07:41 CM98HD > CM97CT 31.9 miles 43° 2025-01-12 21:01:42
AE7QT-14 11 2025-01-03 23:14:29 2025-01-14 23:35:45 CM98EQ > CM97CT 60.3 miles 9° 2025-01-03 23:14:29
W3IV-9 5 2025-01-16 16:53:27 2025-01-17 18:28:21 CM97JU > CM97CT 32.1 miles 84° 2025-01-17 18:28:21
NO1PC-2 7 2025-01-14 17:19:32 2025-01-14 18:20:18 CM97IS > CM97CT 27.4 miles 93° 2025-01-14 17:19:32
KN6KWB-9 24 2025-01-10 12:47:18 2025-01-14 16:36:29 CM97JX > CM97CT 32.3 miles 71° 2025-01-13 13:24:03
N6MEB-9 1 2025-01-03 15:18:16 2025-01-03 15:18:16 CM87VJ > CM97CT 37.2 miles 217° 2025-01-03 15:18:16
KG4EGZ-9 1 2025-01-16 21:30:07 2025-01-16 21:30:07 CM87UL > CM97CT 33.5 miles 229° 2025-01-16 21:30:07
KQ6UP-1 6 2025-01-03 10:01:34 2025-01-03 10:33:37 CM98GF > CM97CT 35.6 miles 34° 2025-01-03 10:01:34
KN6MOS-9 286 2025-01-06 10:08:16 2025-01-16 20:29:38 CM97DQ > CM97CT 10.8 miles 150° 2025-01-16 17:42:31
K6MRP-10 2 2025-01-03 19:20:06 2025-01-03 21:38:21 CM97CX > CM97CT 11.0 miles 8° 2025-01-03 21:38:21
KD2LRL-9 7 2025-01-12 18:05:49 2025-01-18 22:29:21 CM97GQ > CM97CT 20.9 miles 113° 2025-01-18 22:26:19
N8MOR 2 2025-01-03 22:51:55 2025-01-17 18:40:53 CM97CQ > CM97CT 8.9 miles 181° 2025-01-03 22:51:55
N8MOR-7 53 2024-12-31 19:10:42 2025-01-18 17:07:38 CM97IS > CM97CT 28.3 miles 93° 2025-01-04 13:03:49
KF6ZSP-9 16 2025-01-04 09:46:25 2025-01-18 19:10:12 CM87UJ > CM97CT 38.6 miles 221° 2025-01-06 10:26:23
KN6PCT-7 8 2025-01-05 13:54:47 2025-01-05 20:53:39 CM97IW > CM97CT 28.9 miles 73° 2025-01-05 20:18:04
KM6NKT-9 1 2025-01-06 12:10:55 2025-01-06 12:10:55 CM98KP > CM97CT 68.9 miles 33° 2025-01-06 12:10:55
NR7Z-9 190 2025-01-01 12:18:22 2025-01-19 19:38:29 CM97BQ > CM97CT 10.5 miles 212° 2025-01-09 11:38:57
K6AFI-9 1 2024-12-31 21:11:05 2024-12-31 21:11:05 CM97BQ > CM97CT 8.4 miles 206° 2024-12-31 21:11:05
K2DEN-10 1 2025-01-03 21:18:48 2025-01-03 21:18:48 CM87TQ > CM97CT 34.2 miles 255° 2025-01-03 21:18:48
KJ6ETI-9 1 2025-01-15 10:54:19 2025-01-15 10:54:19 CM87UM > CM97CT 32.2 miles 233° 2025-01-15 10:54:19
N6VMG-9 1 2025-01-06 04:10:49 2025-01-06 04:10:49 CM97AR > CM97CT 9.5 miles 243° 2025-01-06 04:10:49
N6UTV-14 24 2025-01-03 17:16:29 2025-01-16 20:26:50 CM97JX > CM97CT 32.3 miles 71° 2025-01-06 23:18:49
KQ6DI-3 407 2025-01-02 22:51:29 2025-01-10 12:21:30 CM97BQ > CM97CT 9.0 miles 200° 2025-01-10 12:21:30
KD6CWU-9 1 2025-01-02 22:54:29 2025-01-02 22:54:29 CM98KP > CM97CT 68.9 miles 33° 2025-01-02 22:54:29
W6RAM-9 1 2025-01-09 21:22:16 2025-01-09 21:22:16 CM97CQ > CM97CT 7.3 miles 176° 2025-01-09 21:22:16
KK6FEN 5 2025-01-17 11:36:40 2025-01-17 11:55:19 CM97GP > CM97CT 23.0 miles 118° 2025-01-17 11:55:19
KA6PRW 48 2025-01-01 01:14:44 2025-01-19 00:02:58 CM98LO > CM97CT 69.4 miles 36° 2025-01-19 00:02:58
N6SJV-1 6 2025-01-17 03:56:14 2025-01-19 08:56:44 CM98IC > CM97CT 36.4 miles 55° 2025-01-19 08:56:44
KM6WSY-7 11 2024-12-31 19:02:23 2025-01-14 19:39:36 CM98HC > CM97CT 30.4 miles 47° 2024-12-31 19:02:23
KM6BHU-9 2 2025-01-11 10:40:26 2025-01-11 10:55:30 CM97KS > CM97CT 36.3 miles 96° 2025-01-11 10:40:26
SUMMIT 41 2025-01-02 05:31:42 2025-01-14 00:31:39 CM98UH > CM97CT 87.5 miles 67° 2025-01-14 00:31:39
WB6ETY-13 133 2025-01-02 15:42:34 2025-01-19 14:50:33 CM97EP > CM97CT 13.1 miles 142° 2025-01-12 14:46:19
KN6TYR-9 3 2025-01-18 13:57:13 2025-01-18 14:22:10 CM97GR > CM97CT 18.3 miles 104° 2025-01-18 14:22:10
K7AGE-9 7 2025-01-11 17:30:10 2025-01-12 12:01:23 CM97LP > CM97CT 43.7 miles 103° 2025-01-12 12:01:23
KN6UWF-9 4 2025-01-03 17:50:25 2025-01-03 17:56:26 CM98CM > CM97CT 48.8 miles 2° 2025-01-03 17:56:26
KN6PRD-9 1 2025-01-03 20:55:26 2025-01-03 20:55:26 CM98FN > CM97CT 54.8 miles 16° 2025-01-03 20:55:26
KJ6HFZ-9 12 2025-01-01 00:49:42 2025-01-11 22:10:39 CM97JR > CM97CT 32.5 miles 99° 2025-01-07 18:41:00
N6JWT-15 16 2025-01-03 07:09:04 2025-01-12 07:13:30 CM98TA > CM97CT 79.7 miles 79° 2025-01-12 07:13:30
WB6LPJ-8 19 2025-01-15 14:19:32 2025-01-15 15:52:48 CM98HE > CM97CT 34.1 miles 39° 2025-01-15 14:19:32
VA7RTI 5 2025-01-02 21:55:28 2025-01-02 22:25:32 CM98HD > CM97CT 31.8 miles 44° 2025-01-02 22:25:32
AF6HO-9 1 2025-01-19 17:30:41 2025-01-19 17:30:41 CM87UJ > CM97CT 37.9 miles 221° 2025-01-19 17:30:41
K8YIP-9 1 2025-01-17 15:39:45 2025-01-17 15:39:45 CM98DC > CM97CT 21.4 miles 15° 2025-01-17 15:39:45
K6NED 1 2025-01-19 14:04:49 2025-01-19 14:04:49 CM97GS > CM97CT 19.2 miles 101° 2025-01-19 14:04:49
K6AFA-9 10 2025-01-05 22:10:48 2025-01-05 22:36:34 CM97GQ > CM97CT 20.4 miles 116° 2025-01-05 22:10:48
KG6TTN 1 2025-01-03 23:52:04 2025-01-03 23:52:04 CM98IR > CM97CT 70.1 miles 23° 2025-01-03 23:52:04
FRNKLN 10 2025-01-03 13:04:22 2025-01-08 11:34:22 CM98GI > CM97CT 43.8 miles 28° 2025-01-08 11:34:22
KK7DOG-7 2 2025-01-17 00:46:51 2025-01-17 00:53:58 CM97IS > CM97CT 27.4 miles 93° 2025-01-17 00:46:51
W7CFL-9 3 2025-01-16 15:01:25 2025-01-16 16:20:03 CM98GG > CM97CT 36.6 miles 31° 2025-01-16 15:01:25
KN6ZEO-15 9 2025-01-09 15:38:05 2025-01-09 16:05:35 CM97GS > CM97CT 20.3 miles 99° 2025-01-09 16:05:35
NO1PC-9 10 2025-01-14 13:45:39 2025-01-14 18:07:10 CM97IT > CM97CT 28.0 miles 88° 2025-01-14 13:45:39
K6KKP-3 7 2024-12-31 20:46:26 2025-01-01 17:12:44 CM97HS > CM97CT 23.4 miles 98° 2025-01-01 16:53:02
KA6ZED-9 31 2025-01-12 14:39:33 2025-01-18 21:21:04 CM97BQ > CM97CT 10.2 miles 197° 2025-01-12 15:45:27
WB6ETY-3 32 2025-01-11 17:33:13 2025-01-19 02:08:30 CM97DP > CM97CT 12.2 miles 162° 2025-01-19 02:08:30
KN6YPQ-9 2 2025-01-11 11:17:54 2025-01-11 11:18:54 CM87XH > CM97CT 37.3 miles 200° 2025-01-11 11:18:54
K6JPB-1 3 2024-12-31 23:24:32 2025-01-03 16:10:05 CM87SP > CM97CT 37.1 miles 253° 2025-01-02 12:54:14
KW6E-9 2 2025-01-19 09:52:28 2025-01-19 16:17:51 CM98DF > CM97CT 30.5 miles 10° 2025-01-19 16:17:51
KW6E-8 2 2025-01-03 18:24:08 2025-01-17 18:04:35 CM87WG > CM97CT 41.8 miles 204° 2025-01-17 18:04:35
N6ZX-3 144 2025-01-01 01:10:35 2025-01-11 16:41:11 CM87UK > CM97CT 38.3 miles 228° 2025-01-11 16:41:11
W6DAJ-9 5 2025-01-02 13:49:07 2025-01-14 01:08:00 CM97AQ > CM97CT 9.9 miles 220° 2025-01-14 00:58:23
KO6CTG-2 1 2025-01-03 19:38:25 2025-01-03 19:38:25 CM87VK > CM97CT 35.3 miles 223° 2025-01-03 19:38:25
KM6YSM-9 11 2025-01-03 10:44:44 2025-01-14 14:32:13 CM98IC > CM97CT 35.7 miles 56° 2025-01-03 10:44:44
N6WYZ-9 1 2025-01-13 08:29:07 2025-01-13 08:29:07 CM98KP > CM97CT 68.8 miles 33° 2025-01-13 08:29:07
KN6ARG-9 5 2025-01-06 20:28:38 2025-01-20 00:49:26 CM87XG > CM97CT 40.4 miles 198° 2025-01-20 00:49:26
WE6ABC-9 2 2025-01-04 15:55:07 2025-01-04 16:05:07 CM97IS > CM97CT 27.4 miles 93° 2025-01-04 15:55:07
N5HIT-7 4 2025-01-14 16:03:57 2025-01-16 16:26:25 CM87SP > CM97CT 37.1 miles 252° 2025-01-16 11:45:54
KN6PE 15 2024-12-31 21:08:17 2025-01-03 09:40:29 CM87XH > CM97CT 38.0 miles 200° 2025-01-03 09:40:29
W2DON 1 2025-01-01 11:32:32 2025-01-01 11:32:32 CM97CQ > CM97CT 9.7 miles 173° 2025-01-01 11:32:32
KC6TYD-9 1 2025-01-09 21:34:51 2025-01-09 21:34:51 CM87VK > CM97CT 35.8 miles 223° 2025-01-09 21:34:51
KD6PPM-4 36 2025-01-03 14:36:13 2025-01-03 15:55:30 CM98FN > CM97CT 55.5 miles 17° 2025-01-03 15:25:23
N8MOR-4 1 2025-01-16 22:46:12 2025-01-16 22:46:12 CM97CQ > CM97CT 9.1 miles 175° 2025-01-16 22:46:12
KI6KVZ-7 1 2025-01-05 13:16:04 2025-01-05 13:16:04 CM97CP > CM97CT 12.5 miles 180° 2025-01-05 13:16:04
N9DK-9 1 2025-01-02 16:55:05 2025-01-02 16:55:05 CM97BP > CM97CT 12.2 miles 204° 2025-01-02 16:55:05
KI6KVZ-9 2 2025-01-19 13:21:41 2025-01-19 13:23:13 CM97CP > CM97CT 12.5 miles 180° 2025-01-19 13:21:41
N6PIV-7 60 2025-01-16 12:26:45 2025-01-17 00:13:17 CM97CP > CM97CT 11.4 miles 183° 2025-01-17 00:13:17

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