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Total 5 documents matching your query.

1. Re: LF: Re: WSPR S/N Tests (score: 1): Author: Andy Talbot <[email protected]>; Date: Sun, 7 Feb 2010 21:09:54 +0000; Yes. Odd that. Increased spectrogram noise reading when it ought to be filtered out I suspect the spectrogram is not a simple power level indication. SpecJT appears to be more of a CFAR indicatio; /rsgb_lf_group-archives/html/rsgb_lf_group/2010-02/msg00077.html (10,701 bytes)
2. LF: Re: WSPR S/N Tests (score: 1): Author: "Clemens Clemens" <[email protected]>; Date: Mon, 8 Feb 2010 01:00:40 +0100; Andy, thanks for confirming that. 73 Clemens DL4RAJ -- Original Message -- From: [email protected] Andy Talbot To: [email protected] [email protected] Cc: [email protected]; /rsgb_lf_group-archives/html/rsgb_lf_group/2010-02/msg00083.html (10,966 bytes)
3. LF: Re: WSPR S/N Tests (score: 1): Author: "James Moritz" <[email protected]>; Date: Sun, 07 Feb 2010 22:45:03 +0100; Dear Andy, LF Group, I just repeated the test with G3ZJO's rather weaker signal - reducing the audio bandwidth to 50Hz increased SNR from -13dB to +15dB! Cheers, Jim Moritz 73 de M0BMU; /rsgb_lf_group-archives/html/rsgb_lf_group/2010-02/msg00147.html (9,416 bytes)
4. LF: Re: WSPR S/N Tests (score: 1): Author: "James Moritz" <[email protected]>; Date: Sun, 07 Feb 2010 22:03:25 +0100; Dear Andy, LF Group, I have just tried a quick test here, which more or less confirms your findings. My approach was to receive off-air signals as normal with 300Hz BW, but to also run Spectrum Lab o; /rsgb_lf_group-archives/html/rsgb_lf_group/2010-02/msg00357.html (11,615 bytes)
5. LF: RE: WSPR S/N Tests (score: 1): Author: "Lee Hudson" <[email protected]>; Date: Mon, 08 Feb 2010 21:43:54 +0100; Hi Andy, Jim, LF Group, I did a similar test back in January and had similar results using a 20Hz bandwidth on WE2XGR/6 and managed 20dB or so improvement. The WSPR spectrogram showed nicely the ripp; /rsgb_lf_group-archives/html/rsgb_lf_group/2010-02/msg00404.html (14,217 bytes)

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