HFU HF Underground
Loggings => DGPS => Topic started by: ChrisSmolinski on December 21, 2016, 1314 UTC
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An interesting change in propagation. The night before I had 22 logs from Panama, the night before that 367. Last night, 4211.
Speaking of Panama, I have not logged Gatun on 307 kHz since the end of August. It used to put in a respectable signal here, hundreds of decodes a night, at least one night over 1K.
Count ID ref1 ref2 kHz Baud City Country Lat Lon km Deg
1 946 344 345 299.0 200 Rigolet, NL Canada 54.25 -58.5 2,126 34
1 505 785 815 313.0 200 Utsira Lt Norway 59.312 4.876 5,867 39
1 426 652 653 302.0 200 Gilze Rijen Netherlands 51.617 4.933 6,158 48
1 451 700 701 289.5 100 Hammerodde Lt, Bornholm Denmark 55.31 14.779 6,583 41
3 907 304 305 320.0 200 Richmond, BC Canada 49.114 -123.183 3,755 302
9 862 154 155 322.0 200 St Louis, MO United States 38.619 -89.764 1,110 268
20 871 172 173 300.0 100 Appleton, WA United States 45.792 -121.332 3,639 296
22 828 246 247 301.0 100 Angleton, TX United States 29.301 -95.484 2,048 241
104 886 272 273 287.0 100 Fort Stevens, OR United States 46.208 -123.96 3,836 297
120 919 308 309 306.0 200 Cardinal, ON Canada 44.783 -75.417 579 12
225 816 032 033 304.0 100 Aransas Pass, TX United States 27.842 -97.065 2,271 241
244 918 310 311 286.0 200 Wiarton, ON Canada 44.75 -81.117 658 330
399 836 112 113 292.0 200 Cheboygan, MI United States 45.656 -84.475 903 320
463 881 262 263 302.0 100 Point Loma, CA United States 32.677 -117.25 3,668 271
691 936 332 333 319.0 200 Point Escuminac, NB Canada 47.075 -64.8 1,277 46
743 937 330 331 298.0 200 Hartlen Point, NS Canada 44.583 -63.45 1,236 60
1248 940 338 339 315.0 200 Cape Race, NL Canada 46.661 -53.075 2,075 60
1267 927 316 317 309.0 200 Lauzon, QC Canada 46.821 -71.165 919 29
2041 814 028 029 293.0 200 English Turn, LA United States 29.886 -89.947 1,609 231
2618 830 100 101 296.0 100 Wisconsin, Point WI United States 46.708 -92.025 1,446 308
2703 809 018 019 289.0 100 Cape Canaveral, FL United States 28.467 -80.554 1,292 196
3146 934 336 337 307.0 200 Fox Island, NS Canada 45.361 -61.097 1,440 59
4211 972 901 902 302.0 200 Miraflores Panama 8.993 -79.585 3,425 185
8135 935 334 335 312.0 200 Western Head, NS Canada 43.993 -64.67 1,122 61
9721 869 168 169 290.0 200 Louisville, KY United States 38.018 -85.31 747 258
14315 864 158 159 317.0 200 St Paul [Alma], MN United States 44.306 -91.906 1,335 297
14881 944 342 343 310.0 200 Cape Norman, NL Canada 51.509 -55.831 2,090 44
22126 939 326 327 295.0 200 Partridge Island, NB Canada 45.239 -66.056 1,084 52
24519 831 102 103 298.0 100 Upper Keweenaw, MI United States 47.233 -88.628 1,258 316
25472 806 012 013 289.0 100 Driver, VA United States 36.963 -76.562 306 174
28453 803 006 007 293.0 100 Moriches, NY United States 40.794 -72.756 376 70
29100 839 118 119 322.0 100 Youngstown, NY United States 43.239 -78.972 428 337
29132 778 192 193 292.0 100 Kensington, SC United States 33.491 -79.349 723 198
29911 925 320 321 313.0 200 Moise, QC Canada 50.202 -66.119 1,443 32
30827 771 196 197 294.0 100 New Bern, NC United States 35.181 -77.059 503 181
31774 799 044 045 290.0 200 Penobscot, ME United States 44.453 -68.776 856 49
32290 827 244 245 312.0 200 Tampa, FL United States 27.85 -82.543 1,415 203
34077 866 162 163 299.0 200 Sallisaw, OK United States 35.369 -94.817 1,644 259
36584 865 160 161 320.0 200 Millers Ferry, AL United States 32.095 -87.397 1,264 231
38504 929 312 313 296.0 200 St Jean Richelieu, QC Canada 45.324 -73.317 693 24
41657 942 340 341 288.0 200 Cape Ray, NL Canada 47.636 -59.241 1,670 52
41900 808 016 017 314.0 200 Card Sound, FL United States 25.442 -80.452 1,619 193
43993 926 318 319 300.0 200 Riviere du Loop, QC Canada 47.762 -69.606 1,072 31
45275 870 170 171 309.0 200 Reedy Point, DE United States 39.569 -75.572 119 97
45795 838 116 117 319.0 200 Detroit, MI United States 42.306 -83.103 592 301
47571 863 156 157 311.0 200 Rock Island IL United States 42.02 -90.231 1,145 287
48984 777 218 219 304.0 200 Mequon, WI United States 43.202 -88.066 1,004 296
49059 847 058 059 301.0 200 Annapolis, MD United States 39.018 -76.61 81 159
49547 804 008 009 286.0 200 Sandy Hook, NJ United States 40.475 -74.02 264 70
49940 772 198 199 306.0 200 Acushnet, MA United States 41.749 -70.889 559 64
50301 792 136 137 297.0 200 Bobo, MS United States 34.125 -90.696 1,368 247
50552 844 094 095 324.0 200 Hudson Falls, NY United States 43.272 -73.542 488 34
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Very nice sampling Chris.
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Recently I have been looking at this for propagation clues.
http://dk0wcy.de/magnetogram/
As opposed to other charts, this is a fine grain look at geomagnetic conditions over the last 24 hours, and gives a better idea of what things are like now, at least in Kiel.
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Recently I have been looking at this for propagation clues.
http://dk0wcy.de/magnetogram/
As opposed to other charts, this is a fine grain look at geomagnetic conditions over the last 24 hours, and gives a better idea of what things are like now, at least in Kiel.
Do any particular values or patterns on those charts appear to correlate with LW/MW propagation?
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When the NS component is flat and near 1, I note good props. To which direction? It varies, but I have been able to see that props from the North, generally Canada, become depressed when the NS component changes markedly. I have been able to note prop changes in overnite recordings which seem to jive with this plot.
I have been using this as a guide which MIGHT give an indication as to where to DX during live sessions. If the NS component is low and well behaved, I will go after stubborn targets to the North (the Maritimes to AB). Otherwise I will go after targets to the South (TX to the Carolinas).
In all cases, you still have to play the game, no matter how crappy things look.
An interesting use of the short term plot is finding that time during which conditions flip; props can be very interesting then, with favored directions becoming quite unpredictable.
I have made no correlations with the EW component.
LF propagation is so fickle and interesting. It's fascinating to see how quickly an opening to a very particular area can occur.
One can only imagine what's going on up there.
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Thanks for the info. I've tried make correlations between DGPS results and the varies indices, but it is difficult to find any hard and fast rules. As you noted, propagation down there is very fickle and changes quickly. A DX DGPS station will often appear for a short period of time, with a burst of decodes, and then disappear. Some of this is due to the mix of stations on a given frequency, in order to hear the DX target, it has to propagate to your QTH, while the normally dominant station(s) must not.