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Loggings => DGPS => Topic started by: ChrisSmolinski on November 17, 2015, 1225 UTC

Title: A few DGPS logs 17 Nov 2015
Post by: ChrisSmolinski on November 17, 2015, 1225 UTC

I got a late start this morning, after the Sun was already rising, and I was using the 200 ft beverage for 48 meters which at long wave is more like an isotropic antenna. The receiver was the SDR-IQ. Storms out in the Midwest didn't help, either. But, a few logs, all decoded with MultiMode:

[11:48:19 11/17/15] PREAMBLE 66  MSG  9  ID    8  PARITY 3b  Z-TIME 33:20.4  SEQ 1  LEN 26  HEALTH 4  PARITY 28  804    8    9  286.0 Sandy Hook, NJ United States
[11:49:04 11/17/15] PREAMBLE 66  MSG  9  ID   12  PARITY 32  Z-TIME 49:18.0  SEQ 5  LEN 18  HEALTH 5  PARITY 36  806   12   13  289.0 Driver, VA United States
[11:50:14 11/17/15] PREAMBLE 66  MSG  9  ID   96  PARITY 2f  Z-TIME 37:28.2  SEQ 7  LEN 14  HEALTH 5  PARITY 10  841   96   97  292.0 Pine River, MN United States
[11:50:34 11/17/15] PREAMBLE 66  MSG  9  ID    6  PARITY 03  Z-TIME 31:06.0  SEQ 7  LEN 26  HEALTH 4  PARITY 2b  803    6    7  293.0 Moriches, NY United States
[11:50:52 11/17/15] PREAMBLE 66  MSG  9  ID  196  PARITY 32  Z-TIME 51:06.0  SEQ 6  LEN  5  HEALTH 3  PARITY 06  771  196  197  294.0 New Bern, NC United States
[11:52:21 11/17/15] PREAMBLE 66  MSG  9  ID  136  PARITY 34  Z-TIME 52:34.8  SEQ 5  LEN  5  HEALTH 2  PARITY 3a  792  136  137  297.0 Bobo, MS United States
[11:53:07 11/17/15] PREAMBLE 66  MSG  9  ID  163  PARITY 24  Z-TIME 53:22.2  SEQ 6  LEN  5  HEALTH 3  PARITY 2d  866  162  163  299.0 Sallisaw, OK United States
[11:53:55 11/17/15] PREAMBLE 66  MSG  9  ID   58  PARITY 02  Z-TIME 54:10.2  SEQ 6  LEN  5  HEALTH 3  PARITY 1c  847   58   59  301.0 Annapolis, MD United States
[11:54:09 11/17/15] PREAMBLE 66  MSG  9  ID   46  PARITY 25  Z-TIME 27:31.8  SEQ 4  LEN 26  HEALTH 5  PARITY 33  824   46   47  303.0 Greensboro, NC United States
[11:54:33 11/17/15] PREAMBLE 66  MSG  9  ID  218  PARITY 0f  Z-TIME 27:06.6  SEQ 4  LEN 26  HEALTH 4  PARITY 2e  777  218  219  304.0 Mequon, WI United States
[11:55:02 11/17/15] PREAMBLE 66  MSG  9  ID  190  PARITY 2f  Z-TIME 26:37.8  SEQ 6  LEN 26  HEALTH 5  PARITY 36  782  190  191  305.0 Dandridge, TN United States
[12:10:46 11/17/15] PREAMBLE 66  MSG  9  ID  130  PARITY 2e  Z-TIME 11:01.2  SEQ 7  LEN  5  HEALTH 2  PARITY 27  834  130  131  307.0 Hagerstown, MD United States
[12:11:15 11/17/15] PREAMBLE 66  MSG  9  ID  171  PARITY 1b  Z-TIME 70:25.2  SEQ 3  LEN 26  HEALTH 4  PARITY 3c  870  170  171  309.0 Reedy Point, DE United States
[12:12:45 11/17/15] PREAMBLE 66  MSG  9  ID   42  PARITY 07  Z-TIME 68:55.8  SEQ 1  LEN 26  HEALTH 4  PARITY 31  800   42   43  316.0 Brunswick NAS, ME United States

Title: Re: A few DGPS logs 17 Nov 2015
Post by: jFarley on November 17, 2015, 1315 UTC

Thanks for posting!

Been wanting to try MultiMode for quite a while; looks like I'll be asking Santa for a MAC of some sort for Christmas!

Title: Re: A few DGPS logs 17 Nov 2015
Post by: ChrisSmolinski on November 17, 2015, 2240 UTC

No directional loop antenna here for long wave, but trying in the evening gives me a slightly different mix of stations:

[22:00:15 11/17/15]  804    8    9  286.0 Sandy Hook, NJ United States
[22:00:42 11/17/15]  942  340  341  288.0 Cape Ray, NL Canada
[22:07:14 11/17/15]  806   12   13  289.0 Driver, VA United States
[22:05:30 11/17/15]  799   44   45  290.0 Penobscot, ME United States
[22:06:49 11/17/15]  788  184  185  291.0 Hawk Run, PA United States
[22:07:58 11/17/15]  778  192  193  292.0 Kensington, SC United States
[22:08:33 11/17/15]  803    6    7  293.0 Moriches, NY United States
[22:10:02 11/17/15]  771  196  197  294.0 New Bern, NC United States
[22:27:46 11/17/15]  843   92   93  295.0 St Marys, WV United States
[22:28:14 11/17/15]  929  312  313  296.0 St. Jean Richelieu, QC Canada
[22:28:29 11/17/15]  792  136  137  297.0 Bobo, MS United States
[22:28:48 11/17/15]  937  330  331  298.0 Hartlen Point, NS Canada
[22:29:42 11/17/15]  926  318  319  300.0 Riviere du Loop, QC Canada
[22:29:59 11/17/15]  847   58   59  301.0 Annapolis, MD United States
[22:30:51 11/17/15]  824   46   47  303.0 Greensboro, NC United States
[22:31:20 11/17/15]  777  218  219  304.0 Mequon, WI United States
[22:31:55 11/17/15]  782  190  191  305.0 Dandridge, TN United States
[22:32:21 11/17/15]  772  198  199  306.0 Acushnet, MA United States
[22:32:35 11/17/15]  834  130  131  307.0 Hagerstown, MD United States
[22:32:59 11/17/15]  870  170  171  309.0 Reedy Point, DE United States
[22:33:16 11/17/15]  863  156  157  311.0 Rock Island IL United States
[22:33:31 11/17/15]  935  334  335  312.0 Western Head, NS Canada
[22:43:52 11/17/15]  925  320  321  313.0 Moise, QC Canada
[22:47:14 11/17/15]  808   16   17  314.0 Card Sound, FL United States
[22:34:44 11/17/15]  800   42   43  316.0 Brunswick NAS, ME United States
[22:40:13 11/17/15]  858  144  145  317.0 Hartsville, TN United States
[22:35:48 11/17/15]  818   36   37  319.0 Savannah, GA United States
[22:36:19 11/17/15]  839  118  119  322.0 Youngstown, NY United States
[22:37:19 11/17/15]  844   94   95  324.0 Hudson Falls, NY United States

I also made some tweaks to the demodulation routine in MultiMode, and decided to print out less (useless?) data.

Title: Re: A few DGPS logs 17 Nov 2015
Post by: jFarley on November 17, 2015, 2253 UTC

Yeah; I can see the NE USA and Canadians are coming in.

28 logs in 37:04; Fansome and Frodge have nothing on you!

Title: Re: A few DGPS logs 17 Nov 2015
Post by: ChrisSmolinski on November 17, 2015, 2308 UTC

I managed to snag one more:

[23:04:27 11/17/15]  944  342  343  310.0 Cape Norman, NL Canada


You should be able to do quite well in the middle of the country, jFarley. I imagine the directional loop should help, also.

Title: Re: A few DGPS logs 17 Nov 2015
Post by: ChrisSmolinski on November 18, 2015, 0022 UTC

And one more for an even 30 two more for an odd 31:

[00:18:33 11/18/15]  940  338  339  315.0 Cape Race, NL Canada
[00:23:41 11/18/15]  865  160  161  320.0 Millers Ferry, AL United States

And another, further west, as it gets darker:
[00:48:15 11/18/15]  866  162  163  299.0 Sallisaw, OK United States

Title: Re: A few DGPS logs 17 Nov 2015
Post by: ChrisSmolinski on November 18, 2015, 1108 UTC

Some new and old stations this morning:

[10:55:30 11/18/15]  851  176  177  325.0 Medora, ND United States
[11:14:44 11/18/15]  818   36   37  319.0 Savannah, GA United States
[11:18:00 11/18/15]  823   52   53  318.0 Summerfield, TX United States
[11:20:43 11/18/15]  874   62   63  313.0 Billings, MT United States
[11:22:40 11/18/15]  827  244  245  312.0 Tampa, FL United States
[11:22:54 11/18/15]  863  156  157  311.0 Rock Island IL United States
[11:27:21 11/18/15]  859  148  149  310.0 Whitney NE United States
[11:30:29 11/18/15]  831  102  103  298.0 Upper Keweenaw, MI United States
[11:31:04 11/18/15]  830  100  101  296.0 Wisconsin, Point WI United States
[11:31:36 11/18/15]  803    6    7  293.0 Moriches, NY United States
[11:41:39 11/18/15]  841   96   97  292.0 Pine River, MN United States
[11:44:33 11/18/15]  869  168  169  290.0 Louisville, KY United States
[13:03:56 11/18/15]  849   60   61  287.0 Polson, MT United States

Title: Re: A few DGPS logs 17 Nov 2015
Post by: ChrisSmolinski on November 18, 2015, 2046 UTC

Two new stations this afternoon. That bring the total to 44 different stations over the last two days. I've tweaked the output format again in MultiMode, to add the location of the station as well as the distance and bearing:

[20:32:41 11/18/15] 154 862 154 155  322.0 kHz St Louis, MO United States    38.6189 -89.7644   1113.24 km   267.63 deg
[20:39:29 11/18/15] 117 838 116 117  319.0 kHz Detroit, MI United States    42.3056 -83.1028   592.235 km   300.653 deg

Title: Re: A few DGPS logs 17 Nov 2015
Post by: jFarley on November 18, 2015, 2117 UTC

Dear Santa, in your North abode,
I don't wish to add much to your load.
But if in your big old sack
Will fit a mini Mac
I'd be able to run MultiMode.

Title: Re: A few DGPS logs 17 Nov 2015
Post by: fyngyrz on November 18, 2015, 2201 UTC

cool

Title: Re: A few DGPS logs 17 Nov 2015
Post by: ChrisSmolinski on November 19, 2015, 1154 UTC

Three new ones this morning:

[11:28:16 11/19/15] 202 765 202 203  289.0 kHz Topeka, KS United States    39.3917 -96.3889   1662.49 km   274.89 deg
[11:30:38 11/19/15] 024 812 024 025  295.0 kHz Eglin AFB, FL United States    30.6489 -86.5542   1335.08 km   223.812 deg
[11:47:09 11/19/15] 105 832 104 105  314.0 kHz Sturgeon Bay, WI United States    44.8036 -87.3239   1022.55 km   306.668 deg

Title: Re: A few DGPS logs 17 Nov 2015
Post by: ChrisSmolinski on November 19, 2015, 1232 UTC

If I had infinite spare time, I would write an app to process an SDR I/Q recording file. With 50 kHz of bandwidth, you could record the entire DGPS band. You could then demodulate all of the channels, and check for both 100 and 200 baud transmissions. Running it overnight, you might get quite the haul of stations.

Title: Re: A few DGPS logs 17 Nov 2015
Post by: ChrisSmolinski on November 20, 2015, 1140 UTC

A new one, and a new record. I finally heard one of the 302 kHz stations:

[11:34:53 11/20/15] 263 881 262 263  302.0 kHz Point Loma, CA United States    32.6769 -117.25   3697.45 km   272.2 deg