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1. LF: Re: Re: 518khz - Notch Filter. (score: 1): Author: "Alan Melia" <[email protected]>; Date: Thu, 21 May 2009 11:32:29 +0100; Hi Jim ah now that is nice, it nicely get round the loading effects on the bridged-T in a 50 ohm environment. I guess a higher Q coil would be easy to fabricate if necessary. May I add that to the pa; /rsgb_lf_group-archives/html/rsgb_lf_group/2009-05/msg00099.html (12,402 bytes)
2. Re: LF: RE: Re: 518khz - Notch Filter. (score: 1): Author: Michel F5WK <[email protected]>; Date: Wed, 20 May 2009 14:40:37 +0200; Gary, You can get more than 80 dB image rejection on a particular frequency with SpectrumLab. The LO on the capture is precisely 511.500 kHz on a modified softrock. Please note that you have to exerc; /rsgb_lf_group-archives/html/rsgb_lf_group/2009-05/msg00127.html (10,422 bytes)
3. LF: RE: Re: 518khz - Notch Filter. (score: 1): Author: "Gary - G4WGT" <[email protected]>; Date: Wed, 20 May 2009 12:16:52 +0100; LF, Thanks for all the replies, comments & suggestions. I thought I could do the filtering within the SpecLab software but all my attempts have had no effect at all, I am not really aware how to mani; /rsgb_lf_group-archives/html/rsgb_lf_group/2009-05/msg00389.html (11,857 bytes)

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