Return-Path: Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-dl06.r1000.mx.aol.com (Internet Inbound) with ESMTP id AABC6380000AC; Sat, 9 Mar 2013 00:09:46 -0500 (EST) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1UEAqU-0000gu-CD for rs_out_1@blacksheep.org; Sat, 09 Mar 2013 03:53:18 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1UEAqT-0000gl-Vx for rsgb_lf_group@blacksheep.org; Sat, 09 Mar 2013 03:53:17 +0000 Received: from mail-ie0-f171.google.com ([209.85.223.171]) by relay1.thorcom.net with esmtps (TLSv1:RC4-SHA:128) (Exim 4.77) (envelope-from ) id 1UEAqR-0003eZ-M5 for rsgb_lf_group@blacksheep.org; Sat, 09 Mar 2013 03:53:16 +0000 Received: by mail-ie0-f171.google.com with SMTP id 10so2897259ied.2 for ; Fri, 08 Mar 2013 19:52:53 -0800 (PST) X-DKIM-Result: Domain=gmail.com Result=Good and Known Domain DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:x-received:date:message-id:subject:from:to :content-type; bh=oYomf/xBRd7ROFmTfRNRPHP7xR7E8BWgJCfD2c5F7Po=; b=UmVCOWMwGnxPsW80gcguVj8Lsjf8R/0Uhfol2kdGwyuLL0WdKMXTrMsB9PFOyzEFyt D+b416zKcofNfEwXHApZ7t3bOyg3uTsMy2DfKSyhG8zQAqRhjeeqlTjxXXvXFXpJalqN VLneLJcInDqCmKT85378X4P8n+lTRHgwmU/MXNa/PhT0LEkuaz0VAqAOswxI7FFOcz0/ jc2TaSVMCamgWwM8KtVYi1ewqrM4rfbaYUHlKyAISxQuA+/BdTYtX64BkB+/SvsagWOz MjWkckCh0lS+7KG9s7fTg24hnhESsrs0yFyefopnKKiF8G5mQejYAp+XTjn6Fm0u/iKk MtFw== MIME-Version: 1.0 X-Received: by 10.50.87.201 with SMTP id ba9mr1166988igb.83.1362801173551; Fri, 08 Mar 2013 19:52:53 -0800 (PST) Received: by 10.50.89.231 with HTTP; Fri, 8 Mar 2013 19:52:53 -0800 (PST) Date: Sat, 9 Mar 2013 14:52:53 +1100 Message-ID: From: Dimitrios Tsifakis To: rsgb_lf_group@blacksheep.org 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: Hello group, I apologise if I am stating the obvious, but perhaps this will be of interest to someone. Old AM radio IF transformers connected back to back via a tiny capacitor make a simple but effective 475 kHz BPF: [...] 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 [209.85.223.171 listed in list.dnswl.org] 0.0 FREEMAIL_FROM Sender email is commonly abused enduser mail provider (dtsifakis[at]gmail.com) -0.0 SPF_PASS SPF: sender matches SPF record 0.0 T_DKIM_INVALID DKIM-Signature header exists but is not valid X-Scan-Signature: e4383209d2ccb9552700d53c0b540538 Subject: LF: simple 475 kHz BPF Content-Type: text/plain; charset=ISO-8859-1 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 x-aol-global-disposition: G X-AOL-SCOLL-AUTHENTICATION: mtain-dl06.r1000.mx.aol.com ; domain : gmail.com DKIM : fail x-aol-sid: 3039ac1d4ad4513ac41a61dd X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none Hello group, I apologise if I am stating the obvious, but perhaps this will be of interest to someone. Old AM radio IF transformers connected back to back via a tiny capacitor make a simple but effective 475 kHz BPF: http://people.physics.anu.edu.au/~dxt103/472/rx_bpf/ 73, Dimitris VK1SV