Re: LF: QRSS3 "challenge" results

[qrss <qrss@talktalk.net>]

Hello Rik / LF

Those results tie in well with my tests on 500kHz. Having run WSPR spaced with QRS3  for some years I was surprised how easy it was to read QRS3 FANT0M tagged to OP4 compared with the OP4 performance.

On the G3ZJO to G0KTN path, (my main tests) thanks Trevor, there is an anomaly, OP1 and OP2 are no worse sometimes better than OP4 within a dB or 2, OP8 and OP16 are worse.

When OP1, OP2 or OP4 drop out on the path WSPR still decodes with 6dB to spare.

Comparing the failing OP16 performance G3ZJO to G0KTN with this one this afternoon leaves some explaining to do.

13:54    500 G3ZJO de ON6EO Op16  -37 dB in JO11LE

73 Eddie G3ZJO

On 08/02/2012 16:00, Rik Strobbe wrote:

Dear all,

 

the results of the "QRSS3 challenge" can be found at http://on7yd.strobbe.eu/QRSS/

Hit refresh if you still see the old challenge.

 

Thanks to all who participated !

 

73, Rik  ON7YD - OR7T

 

---

Van: Rik Strobbe
Verzonden: donderdag 2 februari 2012 18:17
Aan: rsgb_lf_group@blacksheep.org
Onderwerp: QRSS3 "challenge"

Dear all,

 

as mentioned some days ago I generated a whole series of Opera, WSPR and QRSS3 audio with a known SNR.

For Opera and WSPR it was easy to determine the lowest SNR for a proper decode. But for QRSS3 it is much more difficult as it depends on the operators "sharp eye". It must be somewhere in the range of -24 to -28dB SNR (@ 2.5kHz BW).

Today I did put all the QRSS3 screenshots in this range in a website, where you can fill in what you see (decode) for each screenshot.

I would like to invite all of you to give it a try and send me the results (the more entries the better the statistics).

After some time (Feb 10th) will put all results into some nice tables and graphs and make them available.

Of course no personal (individual) results will be published. But based on the results every participant (who keeps his results) can see where he ends.

 

The "QRSS3 Challenge" can be found at http://on7yd.strobbe.eu/QRSS/

 

73, Rik  ON7YD - OR7T