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1. LF: Narrow CW filter using 32kHz clock crstals? (score: 1): Author: "Tracey Gardner" <[email protected]>; Date: Wed, 25 Sep 2002 18:49:07 +0100; I recall someone making a very narrow CW filter (20Hz?) which utilised a number of 32kHz clock crystals. I'd like to have a go at building one but can't recall where I saw the information. Can anyone; /rsgb_lf_group-archives/html/rsgb_lf_group/2002-09/msg00054.html (8,879 bytes)

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