Three Alaska stations, all bearing within a few degrees and at different distances (but not too large of distances). The two furthest had better propagation than the closest (Annette Island). And with the separation of the decodes on that one, our traditional method of guessing probability of valid decodes says its probably not valid, however, at 08:06:41 is right in line with when Biorka was coming in and not too many minutes away from Level Island. So at least one, more than likely two (07:58:29) decodes are probably valid.
There are several factors that are unknown here across all three:
- EIRP (transmitter power & antenna gain)
- Transmission pattern
- Ground conductivity in the area
Without knowing those, this looks less interesting. But if the three stations were all equal in those respects, this would be absolutely fascinating.
Annette Island
Wednesday, July 26, 2017 07:58:29
Wednesday, July 26, 2017 08:06:41
Wednesday, July 26, 2017 09:57:38
Wednesday, July 26, 2017 10:17:09Biorka
Wednesday, July 26, 2017 08:04:23
Wednesday, July 26, 2017 08:05:52
Wednesday, July 26, 2017 08:06:33
Wednesday, July 26, 2017 08:06:36
Wednesday, July 26, 2017 08:06:41
Wednesday, July 26, 2017 08:06:42
Wednesday, July 26, 2017 08:06:56
Wednesday, July 26, 2017 08:07:20
Wednesday, July 26, 2017 08:07:28
Wednesday, July 26, 2017 08:07:41
Wednesday, July 26, 2017 08:08:03
Wednesday, July 26, 2017 08:08:06
Wednesday, July 26, 2017 08:08:16Level Island
Wednesday, July 26, 2017 07:18:36
Wednesday, July 26, 2017 07:18:44
Wednesday, July 26, 2017 07:19:25
Wednesday, July 26, 2017 07:19:48
Wednesday, July 26, 2017 07:21:46
Wednesday, July 26, 2017 07:22:13
Wednesday, July 26, 2017 07:22:34
Wednesday, July 26, 2017 07:22:36
Wednesday, July 26, 2017 07:22:38
Wednesday, July 26, 2017 07:28:53
Wednesday, July 26, 2017 07:40:00
Wednesday, July 26, 2017 07:42:38
Wednesday, July 26, 2017 07:43:18
Wednesday, July 26, 2017 07:46:12
Wednesday, July 26, 2017 07:46:17
Wednesday, July 26, 2017 07:48:02
Wednesday, July 26, 2017 08:14:13
Wednesday, July 26, 2017 08:15:46
Wednesday, July 26, 2017 08:16:46
Wednesday, July 26, 2017 08:17:04
Wednesday, July 26, 2017 08:17:24
Wednesday, July 26, 2017 08:18:01
Wednesday, July 26, 2017 08:18:55
Wednesday, July 26, 2017 08:19:45
Wednesday, July 26, 2017 09:16:16
Count ID ref1 ref2 kHz Baud City Country Lat Lon km Deg
1 746 000 132 298.0 200 Pulau Satumu (Raffles) Singapore 1.165 103.746 14,608 337
1 669 000 738 298.0 200 Soh South Korea 34.096 125.1 10,400 329
13 890 280 281 305.0 100 Biorka, AK Alaska 56.858 -135.546 3,168 310
25 891 282 283 295.0 100 Level Island, AK Alaska 56.467 -133.098 3,014 309
4 889 278 279 323.0 100 Annette Island, AK Alaska 55.069 -131.6 2,901 306
226 909 300 301 309.0 200 Alert Bay, BC Canada 50.589 -126.93 2,554 296
1 808 016 017 314.0 200 Card Sound, FL United States 25.442 -80.452 2,468 147
8 908 302 303 315.0 200 Tofino [Amphitrite Point], BC Canada 48.931 -125.545 2,456 292
353 886 272 273 287.0 100 Fort Stevens, OR United States 46.208 -123.96 2,363 284
715 907 304 305 320.0 200 Richmond, BC Canada 49.114 -123.183 2,283 292
1 888 276 277 302.0 100 Whidbey Island, WA United States 48.322 -122.706 2,249 290
1587 871 172 173 300.0 100 Appleton, WA United States 45.792 -121.332 2,168 282
104 809 018 019 289.0 100 Cape Canaveral, FL United States 28.467 -80.554 2,162 144
1 799 044 045 290.0 200 Penobscot, ME United States 44.453 -68.776 1,942 83
2 772 198 199 306.0 200 Acushnet, MA United States 41.749 -70.889 1,852 93
110 771 196 197 294.0 100 New Bern, NC United States 35.181 -77.059 1,765 123
14 778 192 193 292.0 100 Kensington, SC United States 33.491 -79.349 1,759 132
189 828 246 247 301.0 100 Angleton, TX United States 29.301 -95.484 1,756 187
84 803 006 007 293.0 100 Moriches, NY United States 40.794 -72.756 1,743 98
39 927 316 317 309.0 200 Lauzon, QC Canada 46.821 -71.165 1,729 75
20 814 028 029 293.0 200 English Turn, LA United States 29.886 -89.947 1,709 169
298 806 012 013 289.0 100 Driver, VA United States 36.963 -76.562 1,670 116
14 804 008 009 286.0 200 Sandy Hook, NJ United States 40.475 -74.02 1,659 101
807 844 094 095 324.0 200 Hudson Falls, NY United States 43.272 -73.542 1,595 90
6 870 170 171 309.0 200 Reedy Point, DE United States 39.569 -75.572 1,585 106
2 929 312 313 296.0 200 St Jean Richelieu, QC Canada 45.324 -73.317 1,574 82
261 847 058 059 301.0 200 Annapolis, MD United States 39.018 -76.61 1,538 110
51 919 308 309 306.0 200 Cardinal, ON Canada 44.783 -75.417 1,417 85
3384 792 136 137 297.0 200 Bobo, MS United States 34.125 -90.696 1,233 168
2547 839 118 119 322.0 100 Youngstown, NY United States 43.239 -78.972 1,170 95
366 918 310 311 286.0 200 Wiarton, ON Canada 44.75 -81.117 971 87
3390 838 116 117 319.0 200 Detroit, MI United States 42.306 -83.103 883 106
2897 836 112 113 292.0 200 Cheboygan, MI United States 45.656 -84.475 704 81
66731 777 218 219 304.0 200 Mequon, WI United States 43.202 -88.066 474 113
29945 831 102 103 298.0 100 Upper Keweenaw, MI United States 47.233 -88.628 446 55
39736 830 100 101 296.0 100 Wisconsin, Point WI United States 46.708 -92.025 219 30 
CURRENT DGPS ADVISORIES FOR 26 Jul 2017
Site Name Site Id BNM # OUTAGE MESSAGE
SCHEDULED / UNSCHEDULED OUTAGES
Lincoln 764 0242-17
BROADCAST SITE IS UNUSABLE AS OF 06/22/2017 18:44 Z UNTIL FURTHER NOTICE.
Tampa (Macdill) 827 0276-17
BROADCAST SITE STATUS IS UNCONFIRMED DUE TO NETWORK OUTAGE AS OF 07/25/2017 13:53 Z UNTIL FURTHER NOTICE.
Moriches 803 0278-17
BROADCAST SITE STATUS IS UNCONFIRMED DUE TO NETWORK OUTAGE AS OF 07/26/2017 15:21Z UNTIL FURTHER NOTICE.
GENERAL INFORMATION
Reedy Point 870 0204-17
DGPS BROADCAST SITE WILL PERMANENTLY CEASE BROADCASTING CORRECTIONS ON 31 JULY 2017 AT 1400ZCANADIAN DGPS OUTAGES
CURRENT CANADIAN DGPS ADVISORIES FOR 26 Jul 2017
Site Name Site Id BNM # OUTAGE MESSAGE
SCHEDULED / UNSCHEDULED OUTAGES
Western Head N011-17
BROADCAST SITE IS OFF AIR AS OF 07/25/2017 15:00 Z UNTIL FURTHER NOTICE.AFE822x v2.0 SDR with 43' Wellbrook ALA100LN loop oriented E-W
Topic: DGPS Logs Jul 25, 2017 UTC 2332 - Jul 26, 2017 UTC 2337 (AFE822x) (Read 649 times)