Some very impressive decode counts on the SDR recordings, especially from distant stations. I am not sure how much of this was due to conditions, and how much to modifications I had made to the demodulation routines, I adjusted the filter widths to maximize decode rates of weak stations using some earlier recordings as test cases. They are a little more narrow than they were previously.
The software used, Amalgamated DGPS:
http://www.blackcatsystems.com/software/dgps_decoding_software_sdr.htmlThe first three are invalid decodes, but I think Rigolet is plausible, it was decoded at 2358z. The results are telling me I need to try some sort of directional antenna.
Last night, OTOH, the results were dismal. Distant stations with hundreds or even thousands of decodes from the night before either had only a handful, or did not show up at all. I noticed that the DST value had a blip yesterday, I wonder if that was the reason? Thanks to jFarley for pointing out this index to me!
https://www.hfunderground.com/propagation/#longwave
Count ID ref1 ref2 kHz Baud City Country Lat Lon km Deg
1 643 686 686 309.0200 Ken Saki Japan 35.142 139.685 10,885 330
1 359 518 518 302.0100 Cabo de Palos Spain 37.633 -0.683 6,414 66
1 150 490 490 300.0200 Ras Al Hadd Oman 22.47 59.784 11,773 41
1 946 344 344 299.0200 Rigolet, NL Canada 54.25 -58.5 2,126 34
11 918 310 310 286.0200 Wiarton, ON Canada 44.75 -81.117 658 330
12 684 684 684 325.0100 UNID100 United States 46.917 -103.272 2,263 299
15 888 276 276 302.0100 Whidbey Island, WA United States 48.322 -122.706 3,723 300
61 836 112 112 292.0200 Cheboygan, MI United States 45.656 -84.475 903 320
111 828 246 246 301.0100 Angleton, TX United States 29.301 -95.484 2,048 241
169 881 262 262 302.0100 Point Loma, CA United States 32.677 -117.25 3,668 271
210 936 332 332 319.0200 Point Escuminac, NB Canada 47.075 -64.8 1,277 46
240 907 304 304 320.0200 Richmond, BC Canada 49.114 -123.183 3,755 302
287 919 308 308 306.0200 Cardinal, ON Canada 44.783 -75.417 579 12
381 764 210 210 314.0200 Lincoln, CA United States 38.855 -121.361 3,784 283
422 927 316 316 309.0200 Lauzon, QC Canada 46.821 -71.165 919 29
590 871 172 172 300.0100 Appleton, WA United States 45.792 -121.332 3,639 296
718 972 901 901 302.0200 Miraflores Panama 8.993 -79.585 3,425 185
917 886 272 272 287.0100 Fort Stevens, OR United States 46.208 -123.96 3,836 297
1081 863 156 156 311.0200 Rock Island IL United States 42.02 -90.231 1,145 287
1189 809 018 018 289.0100 Cape Canaveral, FL United States 28.467 -80.554 1,292 196
1554 814 028 028 293.0200 English Turn, LA United States 29.886 -89.947 1,609 231
1597 934 336 336 307.0200 Fox Island, NS Canada 45.361 -61.097 1,440 59
2748 830 100 100 296.0100 Wisconsin, Point WI United States 46.708 -92.025 1,446 308
4390 935 334 334 312.0200 Western Head, NS Canada 43.993 -64.67 1,122 61
4473 937 330 330 298.0200 Hartlen Point, NS Canada 44.583 -63.45 1,236 60
4577 940 338 338 315.0200 Cape Race, NL Canada 46.661 -53.075 2,075 60
6561 925 320 320 313.0200 Moise, QC Canada 50.202 -66.119 1,443 32
7549 869 168 168 290.0200 Louisville, KY United States 38.018 -85.31 747 258
9109 944 342 342 310.0200 Cape Norman, NL Canada 51.509 -55.831 2,090 44
12341 864 158 158 317.0200 St Paul [Alma], MN United States 44.306 -91.906 1,335 297
12681 831 102 102 298.0100 Upper Keweenaw, MI United States 47.233 -88.628 1,258 316
25159 865 160 160 320.0200 Millers Ferry, AL United States 32.095 -87.397 1,264 231
25394 926 318 318 300.0200 Riviere du Loop, QC Canada 47.762 -69.606 1,072 31
26186 942 340 340 288.0200 Cape Ray, NL Canada 47.636 -59.241 1,670 52
27143 839 118 118 322.0100 Youngstown, NY United States 43.239 -78.972 428 337
27985 929 312 312 296.0200 St Jean Richelieu, QC Canada 45.324 -73.317 693 24
28646 778 192 192 292.0100 Kensington, SC United States 33.491 -79.349 723 198
28796 803 006 006 293.0100 Moriches, NY United States 40.794 -72.756 376 70
29062 806 012 012 289.0100 Driver, VA United States 36.963 -76.562 306 174
30357 771 196 196 294.0100 New Bern, NC United States 35.181 -77.059 503 181
33430 866 162 162 299.0200 Sallisaw, OK United States 35.369 -94.817 1,644 259
34070 827 244 244 312.0200 Tampa, FL United States 27.85 -82.543 1,415 203
36344 799 044 044 290.0200 Penobscot, ME United States 44.453 -68.776 856 49
40033 808 016 016 314.0200 Card Sound, FL United States 25.442 -80.452 1,619 193
45816 838 116 116 319.0200 Detroit, MI United States 42.306 -83.103 592 301
49934 777 218 218 304.0200 Mequon, WI United States 43.202 -88.066 1,004 296
50411 792 136 136 297.0200 Bobo, MS United States 34.125 -90.696 1,368 247
56896 772 198 198 306.0200 Acushnet, MA United States 41.749 -70.889 559 64
58240 870 170 170 309.0200 Reedy Point, DE United States 39.569 -75.572 119 97
60304 847 058 058 301.0200 Annapolis, MD United States 39.018 -76.61 81 159
60756 844 094 094 324.0200 Hudson Falls, NY United States 43.272 -73.542 488 34
61394 804 008 008 286.0200 Sandy Hook, NJ United States 40.475 -74.02 264 70
And the associated graph:
