Return-Path: Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by klubnl.pl (8.14.4/8.14.4/Debian-8+deb8u2) with ESMTP id w7NBdNBR011141 for ; Thu, 23 Aug 2018 13:39:25 +0200 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1fsnsU-0005lS-BP for rs_out_1@blacksheep.org; Thu, 23 Aug 2018 12:34:14 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1fsnsT-0005lJ-Pa for rsgb_lf_group@blacksheep.org; Thu, 23 Aug 2018 12:34:13 +0100 Received: from mout02.posteo.de ([185.67.36.66]) by relay1.thorcom.net with esmtps (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.91_59-0488984) (envelope-from ) id 1fsnsQ-0004NL-Pi for rsgb_lf_group@blacksheep.org; Thu, 23 Aug 2018 12:34:12 +0100 Received: from submission (posteo.de [89.146.220.130]) by mout02.posteo.de (Postfix) with ESMTPS id AC8DA21154 for ; Thu, 23 Aug 2018 13:34:09 +0200 (CEST) X-DKIM-Result: Domain=posteo.de Result=Signature OK DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=posteo.de; s=2017; t=1535024049; bh=VQqxfsbv7mthTTVmOMqnS0efOWxrQzHogzDZQhKxE3Q=; h=Date:From:To:Subject:From; b=LnwZ5WHsN/9sNjWDOh35ARgIBuELfYBs0fvJ7L0UvOfyODinfyXmt6k5gx7rEWEag qNf+9+3KHzI2y5LYgGEBY3zts0Aqae+qkITpBmSkuX2sj1qjK/jC4HJu5+m0eD7nAF ShwLawfsMUKri1Y+Nokog22xtDu4saq8VjFu7SoV3DwgvgWrcFbEPknBUjH4m/CxGt jprmJ2OEhVXbgwLigl9fbWE0LnUu7Pllcp/TWRdFv56pRqSCv+4/NdYyrEcaLUwotg 0ldnKqOBY2Q0GmqHuE7pRIzAGR0oz3RjKIe2oYA90zjb9Eoax2TXrepMDy0o1n5ATR tvJOj5io+PiQw== Received: from customer (localhost [127.0.0.1]) by submission (posteo.de) with ESMTPSA id 41x2PD6Mk2z9rxK for ; Thu, 23 Aug 2018 13:34:08 +0200 (CEST) Message-ID: <5B7E9BB0.7000307@posteo.de> Date: Thu, 23 Aug 2018 13:34:08 +0200 From: DK7FC User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; de; rv:1.9.1.8) Gecko/20100227 Thunderbird/3.0.3 MIME-Version: 1.0 To: rsgb_lf_group@blacksheep.org References: <1613303827.20180823120801@gmail.com> In-Reply-To: <1613303827.20180823120801@gmail.com> X-Spam-Score: -2.5 (--) X-Spam-Report: Spam detection software, running on the system "relay1.thorcom.net", has NOT identified this incoming email as spam. The original message has been attached to this so you can view it or label similar future email. If you have any questions, see @@CONTACT_ADDRESS@@ for details. Content preview: Hi Chris, Add some C across the other Cs. If you have 2 nF currently and the frequency is at 150 kHz, then try to add 200 pF. Just try it out, forget the simulations. 73, Stefan [...] Content analysis details: (-2.5 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -2.3 RCVD_IN_DNSWL_MED RBL: Sender listed at http://www.dnswl.org/, medium trust [185.67.36.66 listed in list.dnswl.org] -0.2 RCVD_IN_MSPIKE_H2 RBL: Average reputation (+2) [185.67.36.66 listed in wl.mailspike.net] -0.0 SPF_PASS SPF: sender matches SPF record -0.0 T_RP_MATCHES_RCVD Envelope sender domain matches handover relay domain 0.0 T_DKIM_INVALID DKIM-Signature header exists but is not valid X-Scan-Signature: e09cca6d8e44a91eadbdfb3e1b8aec09 Subject: Re: LF: Anyone good with Elsie? Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.0 required=5.0 tests=none 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 Hi Chris, Add some C across the other Cs. If you have 2 nF currently and the frequency is at 150 kHz, then try to add 200 pF. Just try it out, forget the simulations. 73, Stefan Am 23.08.2018 13:08, schrieb Chris Wilson: > > Hello LF'ers > > Is anyone able and willing to advise on my band pass RX filter design > please? I have made a band pass filter for 137kHz reception and > checked it with my SDR in real time. It is shifted a little high and I > am wondering what I need to change to pull it a bit lower? Any > practical advice or component values welcome. Adjustability would be > nice! Thanks > > Filter design is at http://www.chriswilson.tv/lf-circuit.jpg > > Real world results at : http://www.chriswilson.tv/passband.jpg > > ELSIE plot at : http://www.chriswilson.tv/lf-plot.jpg >