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Author Topic: SDR DGPS Shootout: SDRplay RSP1A vs RSPduo  (Read 2314 times)

Offline ChrisSmolinski

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SDR DGPS Shootout: SDRplay RSP1A vs RSPduo
« on: August 21, 2019, 1628 UTC »
Another SDR DGPS shootout, this time the SDRplay RSP1A vs RSPduo. Again, the 950 ft Log antenna through a low pass filter and splitter, so each SDR was running at the same time. I ran two instances of SDR# to keep things as fair as possible. The test was run late morning, so not much DX expected. I used the Hi-Z port on the RSPduo, fed with one of my Cyclops transformers in reverse, which seems to produce higher signal levels vs the COAX input.

The DGPS band is 285-325 kHz, so these results may be applicable to NDB enthusiasts as well.

The 950 ft LoG (Loop on Ground) antenna is fed via one of my Cyclops antenna transformers and then coax to the shack
https://www.blackcatsystems.com/rf-products/cyclops_rf_ham_shortwave_radio_matching_transformer.html

All decoding done with Amalgamated DGPS of course, the premier DGPS decoding software. https://www.blackcatsystems.com/software/dgps_decoding_software_sdr.html

A win for the RSPduo, not only did it have more decodes for each station, it picked up four stations missed by the RSP1A.

RSP1A
Count    ID   ref1 ref2 kHz   Baud City                           Country              Lat      Lon      km     Deg
824      772  198  199  306.0 200  Acushnet, MA                   United States        41.749   -70.889  561    64 
822      844  094  095  324.0 200  Hudson Falls, NY               United States        43.272   -73.542  489    35 
366      839  118  119  322.0 100  Youngstown, NY                 United States        43.239   -78.972  427    338
605      803  006  007  293.0 100  Moriches, NY                   United States        40.794   -72.756  378    70 
620      806  012  013  289.0 100  Driver, VA                     United States        36.963   -76.562  307    173
963      804  008  009  286.0 200  Sandy Hook, NJ                 United States        40.475   -74.02   266    70 


RSPduo:
Count    ID   ref1 ref2 kHz   Baud City                           Country              Lat      Lon      km     Deg
7        799  044  045  290.0 200  Penobscot, ME                  United States        44.453   -68.776  858    49 
313      778  192  193  292.0 100  Kensington, SC                 United States        33.491   -79.349  723    198
62       929  312  313  296.0 200  St Jean Richelieu, QC          Canada               45.324   -73.317  693    24 
115      838  116  117  319.0 200  Detroit, MI                    United States        42.306   -83.103  590    301
943      772  198  199  306.0 200  Acushnet, MA                   United States        41.749   -70.889  561    64 
978      844  094  095  324.0 200  Hudson Falls, NY               United States        43.272   -73.542  489    35 
396      839  118  119  322.0 100  Youngstown, NY                 United States        43.239   -78.972  427    338
651      803  006  007  293.0 100  Moriches, NY                   United States        40.794   -72.756  378    70 
647      806  012  013  289.0 100  Driver, VA                     United States        36.963   -76.562  307    173
1029     804  008  009  286.0 200  Sandy Hook, NJ                 United States        40.475   -74.02   266    70 
« Last Edit: August 21, 2019, 2004 UTC by ChrisSmolinski »
Chris Smolinski
Westminster, MD
eQSLs appreciated! csmolinski@blackcatsystems.com
netSDR / AFE822x / AirSpy HF+ / KiwiSDR / 900 ft Horz skyloop / 500 ft NE beverage / 250 ft V Beam / 58 ft T2FD / 120 ft T2FD / 400 ft south beverage / 43m, 20m, 10m  dipoles / Crossed Parallel Loop / Discone in a tree

 

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