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Kaldesignal, skibsnavn eller lokator: Slet       
Det er muligt at søge efter et prefix ved at bruge wildcards (*?) f.eks: OH*
APRS station W7PFR-1 - Vis grafer
Kommentar: W2,SSn-N,Eatonville/Pack Forest W7PFR
Lokation: 46°50.37' N 122°15.50' W - lokator CN86UU91AL - Vis kort
2.0 miles Syd pejling 169° fra Eatonville, Pierce County, Washington, United States [?]
14.8 miles Syd pejling 173° fra Graham, Pierce County, Washington, United States
29.9 miles Syd pejling 163° fra Tacoma, Pierce County, Washington, United States
53.1 miles Syd pejling 176° fra Seattle, King County, Washington, United States
Sidste position: 2025-02-07 23:35:01 EST (3m12s siden)
2025-02-07 20:35:01 PST lokal tid i Eatonville, United States [?]
Sidste telemetri: 2025-02-07 23:30:28 EST (7m45s siden) – Vis telemetri
Ch 1: 120, Ch 2: 0, Ch 3: 0, Ch 4: 0, Ch 5: 0
 1     2     3     4     5     6     7     8 
Device: Kantronics: KPC-3
Sidste sti: W7PFR-1>APN391 via qAR,W0FLZ-10
Positions stored: 80
Packet rate: 275 sekunder i gennemsnit mellem pakker over 13476 sekunder.
Items and objects originated: 443.975+R
APRS digipeater – Statistics for 2025-02:
Stationer hørt direkte: 104 på radio rute – Vis kort
Last heard a station directly: 2025-02-07 23:37:41 EST (32s siden)
Normal receiver range estimate: 93 miles (Opdateret: 2025-01-31 18:36:16 EST)
Position packets heard directly: 2414 på radio rute
Stationer nær W7PFR-1´s position - Vis mere
kaldesignal distance sidst hørt - EST      kaldesignal distance sidst hørt - EST
443.975+R0.5 miles 270°2025-02-07 23:20:27 WX7EMT1.2 miles 248°2025-02-07 14:54:44
W7W/RS0681.2 miles 248°2025-02-07 15:25:11 PACK1.4 miles 258°2025-02-07 23:13:20
KF4UCE-41.8 miles 5°2025-01-12 20:04:39 WW7CH-152.0 miles 340°2025-02-07 23:35:15
WW7CH-D2.0 miles 340°2025-02-07 23:32:06 WW7CH-102.0 miles 310°2025-02-07 23:09:49
CW55812.7 miles 163°2025-02-07 23:30:16 KD7GDQ-72.7 miles 276°2025-01-19 03:42:47
KD7GDQ-62.7 miles 276°2025-01-19 10:47:13 KD7GDQ-122.7 miles 276°2025-01-19 12:34:59
KD7GDQ-112.7 miles 276°2025-01-19 03:43:32 KD7GDQ-132.7 miles 276°2025-01-19 03:30:23
KD7GDQ-52.7 miles 276°2025-01-19 03:17:19 KD7GDQ-152.7 miles 276°2025-01-19 11:40:02
KD7GDQ-92.7 miles 276°2025-01-19 02:18:11 KD7GDQ-82.7 miles 276°2025-01-19 03:44:04
KD7GDQ-102.8 miles 277°2025-01-19 11:00:47 K7MXE-13.1 miles 161°2025-02-07 11:59:34
Stations which heard W7PFR-1 directly on radio –
kaldesignal pk. først hørt - EST sidst hørt længste (tx => rx) Længste ved - EST
VE7SLC-7 4 2025-02-05 02:50:53 2025-02-07 01:50:45 CN86UU > CN88HM 125.8 miles 336° 2025-02-07 01:50:45
ERINB 21 2025-02-01 11:50:59 2025-02-07 11:50:40 CN86UU > CN87MQ 65.2 miles 331° 2025-02-07 11:50:40
K7PIA-1 22 2025-02-01 23:35:20 2025-02-07 21:55:01 CN86UU > CN87WE 23.9 miles 15° 2025-02-07 21:55:01
KX7DX-10 1 2025-02-02 11:05:13 2025-02-02 11:05:13 CN86UU > CN87RT 69.6 miles 350° 2025-02-02 11:05:13
JUPITR 57 2025-01-31 19:51:01 2025-02-07 22:50:38 CN86UU > CN87MQ 67.8 miles 331° 2025-02-07 22:50:38
VCAPK 56 2025-02-03 20:55:14 2025-02-06 02:35:07 CN86UU > CN86KX 42.5 miles 283° 2025-02-06 02:35:07
W7DK 115 2025-01-31 19:35:24 2025-02-07 20:55:02 CN86UU > CN87SF 30.2 miles 339° 2025-02-07 20:55:02
W0FLZ-10 66 2025-02-01 07:35:22 2025-02-07 23:35:01 CN86UU > CN88UE 93.6 miles 359° 2025-02-07 23:35:01
WA7GMX-10 5 2025-02-02 15:50:55 2025-02-03 18:35:14 CN86UU > CN87QK 44.1 miles 340° 2025-02-03 18:35:14
AG7WI-2 136 2025-01-31 19:15:26 2025-02-07 21:35:02 CN86UU > CN86TX 10.5 miles 337° 2025-02-07 21:35:02
K1NOT-10 3 2025-02-04 07:50:52 2025-02-07 08:55:03 CN86UU > CN87TQ 59.9 miles 356° 2025-02-07 08:55:03
W7ION-10 10 2025-02-03 09:50:57 2025-02-07 06:50:47 CN86UU > CN87VO 53.9 miles 3° 2025-02-07 06:50:47
K7NWS-2 58 2025-01-31 20:50:59 2025-02-07 19:35:01 CN86UU > CN97AM 47.9 miles 15° 2025-02-07 19:35:01
KK7RFI-10 150 2025-02-01 03:55:22 2025-02-07 23:15:01 CN86UU > CN87UB 16.4 miles 357° 2025-02-07 23:15:01
KD7ISZ-10 100 2025-02-02 12:35:18 2025-02-07 22:55:01 CN86UU > CN86XS 11.7 miles 118° 2025-02-07 22:55:01

Only position packets which were originated by the station are shown here. Rækkevidde statistikken viser ekstra lange hop fordi at nogle digipeatere ikke tilføjer deres eget kaldenavn til digipeaterstrengen korrekt. Kontrollér venligst de rå pakker.
Stations heard directly by W7PFR-1
kaldesignal pk. først hørt - EST sidst hørt længste (rx => tx) Længste ved - EST
KB7UVC 5 2025-02-04 06:23:59 2025-02-06 07:20:28 CN87NK > CN86UU 50.8 miles 324° 2025-02-06 07:20:28
KB7UVC-9 2 2025-02-01 13:16:04 2025-02-01 15:49:01 CN87NK > CN86UU 51.4 miles 323° 2025-02-01 15:49:01
W7AUW 98 2025-01-31 20:50:02 2025-02-07 23:30:56 CN86BX > CN86UU 76.5 miles 278° 2025-02-07 23:30:56
DGDAVE 25 2025-02-01 00:49:31 2025-02-07 02:49:28 CN86BX > CN86UU 76.5 miles 277° 2025-02-07 02:49:28
N7NJO 2 2025-02-01 01:55:29 2025-02-01 10:28:50 CN87QL > CN86UU 48.2 miles 339° 2025-02-01 10:28:50
NG7N 52 2025-02-01 07:46:39 2025-02-07 05:46:47 CN87TP > CN86UU 56.5 miles 353° 2025-02-07 05:46:47
KA7RRA-9 1 2025-02-03 18:18:10 2025-02-03 18:18:10 CN87XU > CN86UU 71.5 miles 8° 2025-02-03 18:18:10
ERINB 24 2025-02-01 01:12:07 2025-02-07 23:11:25 CN87MQ > CN86UU 65.2 miles 331° 2025-02-07 23:11:25
K7ZAC-9 4 2025-02-01 13:43:39 2025-02-07 02:24:09 CN87VS > CN86UU 63.5 miles 2° 2025-02-01 13:43:39
K7FRC 4 2025-02-02 15:09:47 2025-02-07 16:49:50 CN87UL > CN86UU 43.9 miles 357° 2025-02-02 15:09:47
W7OMR 3 2025-02-01 12:53:55 2025-02-06 09:30:23 CN87PN > CN86UU 54.4 miles 339° 2025-02-06 09:30:23
K7PIA-1 1 2025-02-05 14:07:35 2025-02-05 14:07:35 CN87WE > CN86UU 23.9 miles 15° 2025-02-05 14:07:35
N7NJO-14 18 2025-02-03 14:59:42 2025-02-06 13:18:35 CN97AK > CN86UU 44.9 miles 19° 2025-02-03 14:59:42
K7PAL-7 3 2025-02-01 13:26:41 2025-02-07 16:00:00 CN87TP > CN86UU 55.7 miles 353° 2025-02-07 14:17:01
K7PIA-9 8 2025-01-31 20:07:08 2025-02-01 19:41:02 CN87VJ > CN86UU 37.9 miles 1° 2025-02-01 00:48:41
AE7ZE-1 60 2025-01-31 21:08:17 2025-02-07 17:57:18 CN87TE > CN86UU 23.1 miles 349° 2025-02-07 17:57:18
WA7BVQ-2 7 2025-02-03 18:56:48 2025-02-06 10:27:46 CN87TM > CN86UU 47.9 miles 354° 2025-02-06 10:27:46
KB7ZDD-9 4 2025-02-03 20:57:31 2025-02-03 22:27:52 CN87RG > CN86UU 31.2 miles 337° 2025-02-03 20:57:31
SADDLE 105 2025-02-01 20:08:23 2025-02-07 23:17:14 CN85HN > CN86UU 104.3 miles 211° 2025-02-07 23:17:14
JUPITR 22 2025-01-31 23:11:16 2025-02-07 19:55:25 CN87MQ > CN86UU 67.8 miles 331° 2025-02-07 19:55:25
KC7IZH-14 1 2025-02-01 21:26:23 2025-02-01 21:26:23 CN87RC > CN86UU 23.8 miles 323° 2025-02-01 21:26:23
N7XS 1 2025-02-06 02:35:57 2025-02-06 02:35:57 CN87WX > CN86UU 78.9 miles 5° 2025-02-06 02:35:57
KD7EJQ 11 2025-02-07 11:08:00 2025-02-07 18:35:49 CN87PJ > CN86UU 43.6 miles 329° 2025-02-07 16:31:09
N7TUG-8 3 2025-02-03 06:44:36 2025-02-07 07:32:18 CN87TQ > CN86UU 57.5 miles 354° 2025-02-07 07:32:18
KA7WYR 21 2025-02-02 02:44:03 2025-02-06 03:58:29 CN87XN > CN86UU 49.8 miles 10° 2025-02-06 03:58:29
N7QIN-14 15 2025-02-04 15:49:17 2025-02-05 15:04:02 CN87KC > CN86UU 45.5 miles 296° 2025-02-05 11:58:06
VCAPK 1 2025-02-05 08:02:56 2025-02-05 08:02:56 DP01EW > CN86UU 1048.6 miles 5° 2025-02-05 08:02:56
KD7KLA 2 2025-02-02 20:38:44 2025-02-06 22:51:39 CN86RU > CN86UU 15.2 miles 269° 2025-02-06 22:51:39
K7MM-2 27 2025-01-31 21:04:16 2025-02-07 19:34:31 CN87TQ > CN86UU 57.8 miles 356° 2025-02-07 13:56:38
W7DK 20 2025-01-31 20:18:16 2025-02-07 13:18:23 CN87SF > CN86UU 30.2 miles 339° 2025-02-07 13:18:23
W0FLZ-10 69 2025-01-31 21:47:15 2025-02-07 23:31:32 CN88UE > CN86UU 93.6 miles 359° 2025-02-07 23:31:32
KI7WIR-14 2 2025-02-01 12:56:13 2025-02-01 13:38:08 CN87SC > CN86UU 19.5 miles 336° 2025-02-01 13:38:08
KE7ACE-7 9 2025-02-05 08:50:38 2025-02-06 14:28:40 CN86PV > CN86UU 21.1 miles 278° 2025-02-05 11:10:55
KI7WIR-1 5 2025-02-07 11:51:21 2025-02-07 22:17:58 CN87UN > CN86UU 49.0 miles 357° 2025-02-07 12:33:40
N5XMT-1 1 2025-02-05 08:02:56 2025-02-05 08:02:56 CN88VM > CN86UU 116.6 miles 1° 2025-02-05 08:02:56
K7RRL-1 21 2025-01-31 20:26:16 2025-02-04 02:04:14 CN87UD > CN86UU 20.0 miles 350° 2025-02-01 00:51:49
AE7QT-14 3 2025-02-07 16:16:24 2025-02-07 18:04:30 CN87UJ > CN86UU 38.6 miles 358° 2025-02-07 18:04:30
N7BTS-9 2 2025-02-01 13:38:20 2025-02-03 09:16:13 CN87PQ > CN86UU 62.9 miles 341° 2025-02-03 09:16:13
W4CRQ-9 3 2025-02-02 20:00:36 2025-02-07 21:23:47 CN87PM > CN86UU 52.3 miles 338° 2025-02-02 20:00:36
NW7V-9 9 2025-02-03 10:14:28 2025-02-07 21:17:52 CN87UN > CN86UU 50.5 miles 357° 2025-02-03 19:44:06
KX3O 2 2025-02-01 08:51:04 2025-02-07 14:34:48 CN88XA > CN86UU 81.4 miles 7° 2025-02-07 14:34:48
W7FCL-9 2 2025-02-04 20:52:31 2025-02-04 22:18:42 CN87TN > CN86UU 51.0 miles 354° 2025-02-04 20:52:31
N7MJS-9 2 2025-02-02 17:27:14 2025-02-02 17:34:01 CN87SE > CN86UU 26.9 miles 339° 2025-02-02 17:34:01
KI7LZA-9 41 2025-02-03 08:09:35 2025-02-07 17:39:50 CN87VG > CN86UU 30.7 miles 1° 2025-02-07 08:35:36
K7WJV-9 55 2025-01-31 22:08:01 2025-02-07 21:40:17 CN87VT > CN86UU 65.8 miles 0° 2025-02-02 10:27:10
KJ7T-9 1 2025-02-06 09:44:40 2025-02-06 09:44:40 CN87LG > CN86UU 47.8 miles 308° 2025-02-06 09:44:40
N6NBN-13 5 2025-02-01 12:54:40 2025-02-02 20:07:47 CN87WN > CN86UU 48.8 miles 5° 2025-02-01 12:54:40
N7EKB-14 162 2025-02-03 12:28:51 2025-02-07 19:47:39 CN97AK > CN86UU 43.7 miles 18° 2025-02-04 11:55:56
W0WL-9 4 2025-02-01 12:43:29 2025-02-04 12:15:28 CN87VO > CN86UU 53.6 miles 3° 2025-02-01 14:52:23
N7EJ-9 3 2025-02-01 12:24:15 2025-02-01 13:41:32 CN87TL > CN86UU 45.0 miles 355° 2025-02-01 13:41:32
AF7KB-9 1 2025-02-07 16:51:00 2025-02-07 16:51:00 CN88WA > CN86UU 82.3 miles 5° 2025-02-07 16:51:00
VE7TIN-9 5 2025-02-03 21:34:58 2025-02-07 20:44:02 CN88FM > CN86UU 129.1 miles 333° 2025-02-07 20:44:02
N7NJO-9 7 2025-02-03 18:55:01 2025-02-06 12:36:31 CN87RG > CN86UU 31.0 miles 337° 2025-02-06 11:52:38
KD7KLA-7 1 2025-01-31 19:29:08 2025-01-31 19:29:08 CN86RU > CN86UU 15.2 miles 269° 2025-01-31 19:29:08
W7ION-10 34 2025-01-31 23:39:01 2025-02-07 21:32:58 CN87VO > CN86UU 53.9 miles 3° 2025-02-07 21:32:58
KM6WSY-7 5 2025-02-03 06:44:29 2025-02-03 10:48:21 CN87XJ > CN86UU 38.1 miles 13° 2025-02-03 10:48:21
KA7CSE 5 2025-02-02 13:44:22 2025-02-06 16:06:13 CN87VH > CN86UU 32.8 miles 5° 2025-02-06 16:06:13
KM4NVH-9 2 2025-02-01 21:01:11 2025-02-01 21:05:20 CN87SF > CN86UU 27.7 miles 340° 2025-02-01 21:05:20
N7AJ-1 1 2025-02-06 20:27:35 2025-02-06 20:27:35 CN87UO > CN86UU 52.9 miles 357° 2025-02-06 20:27:35
N4RDZ-10 23 2025-02-03 13:28:55 2025-02-07 21:20:45 CN87UJ > CN86UU 39.8 miles 357° 2025-02-07 21:20:45
KJ7SXR-9 56 2025-02-01 12:15:15 2025-02-01 16:49:03 CN87SC > CN86UU 20.7 miles 337° 2025-02-01 14:21:28
WS7JIM-9 3 2025-02-01 20:30:23 2025-02-05 20:57:26 CN87TM > CN86UU 46.0 miles 355° 2025-02-01 20:30:23
KD7GAB-9 1 2025-02-02 14:07:03 2025-02-02 14:07:03 CN97AK > CN86UU 43.6 miles 17° 2025-02-02 14:07:03
AC7VA-9 5 2025-02-02 13:54:37 2025-02-02 17:19:24 CN87GJ > CN86UU 68.9 miles 305° 2025-02-02 16:22:59
N7YPG 8 2025-01-31 20:30:31 2025-02-07 20:47:18 CN87QJ > CN86UU 43.1 miles 337° 2025-02-07 11:11:37
K8YFR-9 1 2025-02-02 11:59:46 2025-02-02 11:59:46 CN87PB > CN86UU 27.1 miles 306° 2025-02-02 11:59:46
NT7PS-9 2 2025-02-06 18:08:55 2025-02-06 23:27:59 CN86LO > CN86UU 40.9 miles 248° 2025-02-06 23:27:59
WA7FOX-13 16 2025-02-02 09:04:43 2025-02-07 15:24:51 CN87TP > CN86UU 56.4 miles 354° 2025-02-07 14:18:39
KB7IOG-9 29 2025-02-01 11:43:47 2025-02-05 19:09:09 CN87QN > CN86UU 51.7 miles 340° 2025-02-04 13:11:30
W7HRM-10 3 2025-02-07 14:13:56 2025-02-07 20:07:04 CN88GC > CN86UU 103.6 miles 328° 2025-02-07 20:07:04
KJ7JDC-9 49 2025-02-01 16:56:28 2025-02-07 22:26:34 CN87QC > CN86UU 25.2 miles 322° 2025-02-07 20:17:45
KC9ANA 3 2025-02-02 11:24:59 2025-02-06 13:19:56 CN87WE > CN86UU 24.2 miles 12° 2025-02-06 13:19:56
KC9ANA-9 2 2025-02-07 23:16:22 2025-02-07 23:26:49 CN87VE > CN86UU 25.1 miles 3° 2025-02-07 23:26:49
KB7MTM-9 2 2025-02-04 17:09:03 2025-02-04 17:10:05 CN87RH > CN86UU 36.0 miles 341° 2025-02-04 17:10:05
KU7M-7 3 2025-02-04 10:33:40 2025-02-07 10:32:37 CN87UO > CN86UU 52.0 miles 356° 2025-02-07 10:32:37
KI7WIR-5 4 2025-02-01 16:43:45 2025-02-05 12:27:24 CN87VJ > CN86UU 37.6 miles 1° 2025-02-05 12:27:24
KK7MCI-7 2 2025-02-06 17:37:58 2025-02-07 13:33:32 CN87NB > CN86UU 31.0 miles 297° 2025-02-07 13:33:32
NK9W-4 9 2025-02-03 06:42:48 2025-02-07 09:52:48 CN87TH > CN86UU 34.3 miles 352° 2025-02-07 09:52:48
W7GDS-9 39 2025-02-01 10:39:55 2025-02-07 12:58:22 CN86QW > CN86UU 17.3 miles 293° 2025-02-02 12:40:52
KK7RSJ-9 1 2025-02-07 10:01:16 2025-02-07 10:01:16 CN87VK > CN86UU 41.8 miles 1° 2025-02-07 10:01:16
W7VXS-3 11 2025-02-01 09:51:38 2025-02-07 14:21:40 CN87VM > CN86UU 48.3 miles 2° 2025-02-07 14:21:40
N7YVZ-12 475 2025-01-31 19:14:50 2025-02-07 23:37:41 CN87VK > CN86UU 40.0 miles 2° 2025-02-02 16:58:06
KK7RFI-10 162 2025-02-01 00:15:46 2025-02-07 23:15:45 CN87UB > CN86UU 16.4 miles 357° 2025-02-07 23:15:45
W7SFO 4 2025-01-31 19:58:41 2025-02-01 13:36:16 CN87SC > CN86UU 20.0 miles 335° 2025-02-01 13:36:16
KD7ISZ-10 1 2025-02-01 09:55:50 2025-02-01 09:55:50 CN86XS > CN86UU 11.7 miles 118° 2025-02-01 09:55:50
W7ALY 1 2025-02-02 09:27:19 2025-02-02 09:27:19 CN88WG > CN86UU 98.0 miles 4° 2025-02-02 09:27:19
KB7IOG-2 6 2025-01-31 21:59:34 2025-02-07 20:31:37 CN87RE > CN86UU 29.2 miles 330° 2025-02-07 20:31:37
KD7MYC-9 6 2025-02-01 16:36:31 2025-02-07 09:50:32 CN87UH > CN86UU 32.9 miles 355° 2025-02-06 07:16:21
N7EKB-9 202 2025-01-31 19:14:48 2025-02-07 21:18:02 CN87UH > CN86UU 31.8 miles 358° 2025-02-05 09:30:49
K1RPN 1 2025-02-05 14:18:13 2025-02-05 14:18:13 CN87TR > CN86UU 62.4 miles 356° 2025-02-05 14:18:13
KK7PMI-6 1 2025-02-04 00:53:47 2025-02-04 00:53:47 CN87VR > CN86UU 61.3 miles 2° 2025-02-04 00:53:47
KK7RFI-9 4 2025-02-03 08:17:10 2025-02-05 08:40:09 CN87VE > CN86UU 24.9 miles 5° 2025-02-04 18:43:51
W7KJ-9 27 2025-02-02 14:25:02 2025-02-07 16:07:04 CN87QI > CN86UU 38.0 miles 335° 2025-02-04 15:10:09
KK7QNX-9 67 2025-02-04 23:51:20 2025-02-05 06:48:43 CN86QW > CN86UU 18.7 miles 293° 2025-02-05 06:48:43
KG7PBC-7 110 2025-01-31 20:28:09 2025-02-07 22:21:56 CN87UL > CN86UU 43.8 miles 0° 2025-02-07 16:30:12
W7ACC-9 8 2025-02-03 10:10:04 2025-02-05 16:31:40 CN87VL > CN86UU 43.8 miles 2° 2025-02-04 14:17:44
W7JKH-9 3 2025-02-02 11:07:01 2025-02-02 16:44:19 CN97BX > CN86UU 81.5 miles 13° 2025-02-02 11:07:01
KJ7JXM-8 1 2025-02-01 22:37:52 2025-02-01 22:37:52 CN87VN > CN86UU 51.2 miles 4° 2025-02-01 22:37:52
KK7TAQ-7 2 2025-02-02 16:23:46 2025-02-03 02:19:44 CN87UJ > CN86UU 37.0 miles 358° 2025-02-03 02:19:44
KG7QIU 2 2025-02-02 19:06:27 2025-02-02 19:38:00 CN87WE > CN86UU 23.8 miles 16° 2025-02-02 19:38:00
N8ZO-9 1 2025-02-04 12:23:11 2025-02-04 12:23:11 CN87RG > CN86UU 33.8 miles 335° 2025-02-04 12:23:11
KK7MWI-10 19 2025-02-01 07:43:18 2025-02-07 02:09:14 CN87UO > CN86UU 52.5 miles 358° 2025-02-07 02:09:14
KK7TAR-7 1 2025-02-01 20:37:52 2025-02-01 20:37:52 CN87TH > CN86UU 32.5 miles 350° 2025-02-01 20:37:52
W7ALK-9 26 2025-02-03 21:23:56 2025-02-06 20:04:09 CN86WS > CN86UU 8.5 miles 131° 2025-02-05 10:24:38

Kun stationer hvor en lokationspakke er blevet hørt, er vist her. Rækkevidde statistikken viser ekstra lange hop fordi at nogle digipeatere ikke tilføjer deres eget kaldenavn til digipeaterstrengen korrekt. Kontrollér venligst de rå pakker.
Om denne side
Denne side viser real-time informationer fra Automatic Position Reporting System Internet netværket (APRS-IS). APRS er brugt af amateur (ham) radio Radioamatør til at sende real-time positions information, vejr data, telemetri og beskeder over en radio. Et køretøj udstyret med en GPS modtager, a VHF transmitter eller HF transceiver og en lille computer kaldet en tracker, sender sin position, hastighed og kurs i små data pakker, som så bliver modtaget af nærliggende IGate modtage stationer som videre sender pakkerne til Internet. Systemer forbundet til Internet kan sende informationer direkte til APRS-IS uden brug af en radio og/eller samle og vise informationer sendt fra et hvert sted på jorden.
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