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Total 2 documents matching your query.

1. LF: Direct LF Upconverter (score: 1): Author: "Andy Talbot" <[email protected]>; Date: Sat, 17 Jan 2009 23:59:10 +0000; Direct soundcard to LF upconverter; image reject mixer with allpass phase network for a few hundred Hz bandwidth. http://www.g4jnt.com/LFUpconv.pdf Around 40dBc sideband rejection, so a bit marginal; /rsgb_lf_group-archives/html/rsgb_lf_group/2009-01/msg00244.html (9,287 bytes)
2. Re: LF: Direct LF Upconverter (score: 1): Author: Wolfgang Büscher <[email protected]>; Date: Sun, 18 Jan 2009 01:11:44 +0100; Hello Andy, If you want to see a REALLY ugly LF exciter, also with I/Q processing : http://freenet-homepage.de/dl4yhf/phasing_lf_exciter/index.html And, not as ugly as mine: http://www.w1tag.com/Phas; /rsgb_lf_group-archives/html/rsgb_lf_group/2009-01/msg01306.html (9,323 bytes)

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