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1. LF: 73kHz / Soundcards (score: 1): Author: "James Moritz" <[email protected]>; Date: Fri, 4 Feb 2000 14:56:16 +0000; Re: 73kHz Sideband noises / Soundcards Dear LF Group, I quite agree with Alan that measuring noise levels using a soundcard is unlikely to result in a definitive measurement, but in the few minutes a; /rsgb_lf_group-archives/html/rsgb_lf_group/2000-02/msg00048.html (9,381 bytes)
2. Re: LF: 73kHz / Soundcards (score: 1): Author: "Mike Dennison" <[email protected]>; Date: Fri, 04 Feb 2000 17:48:18 +0100; A noise level -45dB relative to the carrier, within a few 100Hz of the carrier is probably pretty good performance, or at least not a major fault - after all, there is bound to be some ripple, and -4; /rsgb_lf_group-archives/html/rsgb_lf_group/2000-02/msg00049.html (8,585 bytes)
3. Re: LF: 73kHz / Soundcards (score: 1): Author: "vernall" <[email protected]>; Date: Sat, 05 Feb 2000 08:29:30 +1300; James Moritz wrote: snip snip Since soundcards and software like Spectrogram have many other uses to radio amateurs apart from reading QRSS, it would be interesting to know if any data exists about t; /rsgb_lf_group-archives/html/rsgb_lf_group/2000-02/msg00051.html (10,154 bytes)

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