Return-Path: Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-dh04.r1000.mx.aol.com (Internet Inbound) with ESMTP id 2F303380000B0; Wed, 12 Sep 2012 17:28:21 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1TBuSr-0000DQ-1J for rs_out_1@blacksheep.org; Wed, 12 Sep 2012 22:27:17 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1TBuSq-0000DG-Iu for rsgb_lf_group@blacksheep.org; Wed, 12 Sep 2012 22:27:16 +0100 Received: from smtpa1.mediabeam.com ([194.25.41.13] helo=smtpa2.mediabeam.com) by relay1.thorcom.net with esmtps (TLSv1:AES256-SHA:256) (Exim 4.77) (envelope-from ) id 1TBuSo-0004iJ-Qt for rsgb_lf_group@blacksheep.org; Wed, 12 Sep 2012 22:27:15 +0100 Received: from IMAP4 (balancer7.mediabeam.com [10.100.1.80]) by smtpa2.mediabeam.com (8.13.8/8.13.1) with ESMTP id q8CLRDBb023419 for ; Wed, 12 Sep 2012 23:27:13 +0200 Date: Wed, 12 Sep 2012 23:27:11 +0200 From: uwe-jannsen@kabelmail.de To: rsgb_lf_group@blacksheep.org Message-ID: <052d2a8dc5b04a07b96ee3e9f82ea712@kabelmail.de> X-Priority: 3 (Normal) MIME-Version: 1.0 X-Spam-Score: -0.7 (/) X-Spam-Report: Spam detection software, running on the system "relay1.thorcom.net", has identified this incoming email as possible spam. The original message has been attached to this so you can view it (if it isn't spam) or label similar future email. If you have any questions, see the administrator of that system for details. Content preview: Hi Stefan, thanks for QSO. GL Uwe/dj8wx Von: rsgb_lf_group@blacksheep.org Gesendet: 12.09.2012 22:01 An: rsgb_lf_group@blacksheep.org Betreff: LF: MF tonite [...] Content analysis details: (-0.7 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -0.7 RCVD_IN_DNSWL_LOW RBL: Sender listed at http://www.dnswl.org/, low trust [194.25.41.13 listed in list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record 0.0 HTML_MESSAGE BODY: HTML included in message X-Scan-Signature: 318d3d373f5ffaa82e0969bd1985b258 Subject: Re: LF: MF tonite Content-Type: multipart/alternative; boundary="----9613F589FE754177AD98501852F767E2" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: * X-Spam-Status: No, hits=1.1 required=5.0 tests=HTML_MESSAGE,NO_REAL_NAME, PRIORITY_NO_NAME autolearn=no version=2.63 X-SA-Exim-Scanned: Yes Sender: owner-rsgb_lf_group@blacksheep.org Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group X-SA-Exim-Rcpt-To: rs_out_1@blacksheep.org X-SA-Exim-Scanned: No; SAEximRunCond expanded to false x-aol-global-disposition: G x-aol-sid: 3039ac1d41185050fe751682 X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none ------9613F589FE754177AD98501852F767E2 Content-type: text/plain; charset=Windows-1252 Content-Transfer-Encoding: quoted-printable Hi Stefan, thanks for QSO=2E GL Uwe/dj8wx Von: rsgb_lf_group@blacksheep=2Eorg Gesendet: 12=2E09=2E2012 22:01 An: rsgb_lf_group@blacksheep=2Eorg Betreff: LF: MF tonite Christian, Are you QRV tonite? I would like to see or better hear the difference = of=20 my RX performance when using my band filter i was testing in the after= noon=2E It is the mechanical filter which uses source followers at the input a= nd=20 output, to provide a constant accurate impedance matching to keep the=20 passband ripple as low as possible=2E The afternoons tests have been v= ery=20 promising, see https://dl=2Edropbox=2Ecom/u/19882028/MF/MF%20Filter=2E= png This is the frequency response:=20 https://dl=2Edropbox=2Ecom/u/19882028/MF/473%20kHz%20ZF%20Filter%2040%= 20dB=2Epng There should be a much better image rejection now and so maybe a few=20 more dB SNR=2E=2E=2E Unfortunately the filter does not cover the 502 k= Hz=20 region=2E But this problem will be gone in some months=2E=2E=2E Will be on 472=2E5 kHz soon=2E 73, Stefan/DK7FC Am 12=2E09=2E2012 21:01, schrieb C=2E Groeger: > Thanks, mal for these wise words! > Df5qg (Homebrew& CW) > > Christian Groeger > > mal hamilton schrieb: > >=20 >> Never replace the MORSE KEY, you do at your peril !! >> Other modes come and go but MORSE lives on >> All Radio Operators know this=2E >> >> G3KEV >> >> ------9613F589FE754177AD98501852F767E2 Content-type: text/html; charset=Windows-1252 Content-Transfer-Encoding: quoted-printable
Hi Stefan,

thanks for QSO=2E

GL
Uwe/dj8wx
Von: rsgb_lf_group@blacksheep=2Eorg
Gesendet: 12=2E09=2E2012 22:01
An: rsgb_lf_group@blacksheep=2Eorg
Betreff: LF: MF tonite

Christian,

Are you QRV tonite? I would like to see or better hear the difference o= f
my RX performance when using my band filter i was testing in the aftern= oon=2E

It is the mechanical filter which uses source followers at the input an= d
output, to provide a constant accurate impedance matching to keep the <= br /> passband ripple as low as possible=2E The afternoons tests have been ve= ry
promising, see https://dl=2Edropbox=2Ecom/u/19882028/MF/MF%20Filter=2Ep= ng
This is the frequency response:
https://dl=2Edropbox=2Ecom/u/19882028/MF/473%20kHz%20ZF%20Filter%2040%2= 0dB=2Epng

There should be a much better image rejection now and so maybe a few more dB SNR=2E=2E=2E Unfortunately the filter does not cover the 502 kH= z
region=2E But this problem will be gone in some months=2E=2E=2E

Will be on 472=2E5 kHz soon=2E

73, Stefan/DK7FC

Am 12=2E09=2E2012 21:01, schrieb C=2E Groeger:
> Thanks, mal for these wise words!
> Df5qg (Homebrew& CW)
>
> Christian Groeger
>
> mal hamilton schrieb:
>
>
>> Never replace the MORSE KEY, you do at your peril !!
>> Other modes come and go but MORSE lives on
>> All Radio Operators know this=2E
>>
>> G3KEV
>>
>>

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