search

Guenael / rtlsdr-wsprd

WSPR daemon for RTL receivers
GNU General Public License v3.0
112 stars 32 forks source link

dbg: testing a larger BW to grab extra signals/spots #107

Closed Guenael closed 2 years ago

Guenael commented 2 years ago

cc @dforsi @mkarliner you might be interested in testing this branch.

Guenael commented 2 years ago

I will NOT merge this branch right now.

mkarliner commented 2 years ago

Being trying this morning on 40. It's not providing dramatically more spots, but it's not that easy to tell if there is or isn't an improvement. At this time of year, the bands go up a down a lot over quite short periods of time. If I get the chance, I'll try piping wsprd | wc with each branch.

mkarliner commented 2 years ago

BTW, another column in the output for offset would help in identifying wide bandwidth signals.

dforsi commented 2 years ago

Thank you Guenal, however I don't think that I can make meaningful tests because I only have one antenna for HF and no external tuner, I use it with the internal tuner of my transceiver and one antenna for VHF/UHF, but there aren't WSPR transmitters on VHF/UHF near enough anyway.

I'll let this branch of rtlsdr-wsprd run overnight with this command line ./rtlsdr_wsprd -f 80m -u 125M -c IU5HKX -l JN53fj -w 80m_fir , but for now I'm only getting wrong decodes

              Date  Time(z)    SNR     DT       Freq Dr    Call    Loc Pwr
Allocating 15 zero-copy buffers
Spot :  2021-12-20 23:20:00 -22.29  -4.73   3.594102  0   <...> A000AA 63
No spot 2021-12-20 23:22z
No spot 2021-12-20 23:24z
No spot 2021-12-20 23:26z
No spot 2021-12-20 23:28z
Spot :  2021-12-20 23:30:00 -24.14  -0.91   3.594202  0   <...> A000AA 63
No spot 2021-12-20 23:32z
No spot 2021-12-20 23:34z
No spot 2021-12-20 23:36z
Spot :  2021-12-20 23:38:00 -22.79  -1.74   3.594102  0   <...> A000AA 63
Spot :  2021-12-20 23:38:00 -25.20  -3.19   3.594202  0   <...> A000AA 63
No spot 2021-12-20 23:40z
Spot :  2021-12-20 23:42:00 -22.22   3.80   3.594102  0   <...> A000AA 63

These are the .iq file for some of the spots above:

Guenael commented 2 years ago

Yep, there is nothing visible on these sample. BTW, what kind of up-converter did you used? I will update to the latest version of wsprd, and hope for a fix with these wrong spots, otherwise, I will add a str cmp test to remove them.

dforsi commented 2 years ago

My upconverter is a no-brand based on the NE602 mixer.

Guenael commented 2 years ago

@dforsi I will finish this branch https://github.com/Guenael/rtlsdr-wsprd/tree/lib-update , and we will see if a recent version of wsprd fix this issue. Otherwise, I will drop this callsign.

Guenael commented 2 years ago

Additional BW not required here (cf. decoding bw limited +/-150Hz by another FIR).