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[195.171.43.25]) by mx.google.com with ESMTP id dc5si3552365wib.22.2013.07.14.07.51.54 for ; Sun, 14 Jul 2013 07:51:54 -0700 (PDT) Received-SPF: neutral (google.com: 195.171.43.25 is neither permitted nor denied by best guess record for domain of owner-rsgb_lf_group@blacksheep.org) client-ip=195.171.43.25; Authentication-Results: mx.google.com; spf=neutral (google.com: 195.171.43.25 is neither permitted nor denied by best guess record for domain of owner-rsgb_lf_group@blacksheep.org) smtp.mail=owner-rsgb_lf_group@blacksheep.org Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1UyN6j-0004IK-1l for rs_out_1@blacksheep.org; Sun, 14 Jul 2013 15:17:01 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1UyN6i-0004IB-LR for rsgb_lf_group@blacksheep.org; Sun, 14 Jul 2013 15:17:00 +0100 Received: from relay2.uni-heidelberg.de ([129.206.210.211]) by relay1.thorcom.net with esmtps (TLSv1:AES256-SHA:256) (Exim 4.77) (envelope-from ) id 1UyN6h-0001Ru-5l for rsgb_lf_group@blacksheep.org; Sun, 14 Jul 2013 15:16:59 +0100 Received: from freitag.iup.uni-heidelberg.de (freitag.iup.uni-heidelberg.de [129.206.29.204]) by relay2.uni-heidelberg.de (8.13.8/8.13.8) with ESMTP id r6EEGwLx006544 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO) for ; Sun, 14 Jul 2013 16:16:58 +0200 Received: from [129.206.22.206] (pc206.iup.uni-heidelberg.de [129.206.22.206]) by freitag.iup.uni-heidelberg.de (8.12.11.20060308/8.11.2) with ESMTP id r6EEGuKF027589 for ; Sun, 14 Jul 2013 16:16:56 +0200 Message-ID: <51E2B2D5.5090805@iup.uni-heidelberg.de> Date: Sun, 14 Jul 2013 16:16:53 +0200 From: =?ISO-8859-1?Q?Stefan_Sch=E4fer?= 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: <005b01ce798a$b0476600$6d01a8c0@DELL4> <20130706131640.GG5246@cs.utwente.nl> <7D6B8CBB38964C9C82487F5D0F3648FC@FMVXD1232> <20130707203537.GA30691@cs.utwente.nl> <51DA00C8.6000600@iup.uni-heidelberg.de> <51DA0212.8020808@iup.uni-heidelberg.de> <51DA03CE.6020508@iup.uni-heidelberg.de> <51DA1680.6030602@iup.uni-heidelberg.de> <51DB6CB3.2080708@iup.uni-heidelberg.de> <001601ce7c95$f235b360$6401a8c0@JAYDELL> <51DBFF7D.9050807@iup.uni-heidelberg.de> <51DC58E9.5030005@iup.uni-heidelberg.de> <51DF1D06.8020208@iup.uni-heidelberg.de> <51DF43E7.8080300@iup.uni-heidelberg.de> <51E147E2.8080302@iup.uni-heidelberg.de> <002701ce7ff5$714bc830$53e35890$@nifty.com> <51E1DDDF.3020904@iup.uni-heidelberg.de> <001501ce8098$51e6af20$f5b40d60$@nifty.com> In-Reply-To: <001501ce8098$51e6af20$f5b40d60$@nifty.com> X-Spam-Score: -2.7 (--) 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 Hideho, Am 14.07.2013 15:44, schrieb Hideho YAMAMURA: > > This is what I thought, and I made a pi shape filter : Gnd - CMC - Gnd. > Pse see attached. > That looks nice. Thanks for the images. What is the distance between the earth rods? And what is their length? What is the distance to the shack/house/noisy earth? [...] Content analysis details: (-2.7 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -2.3 RCVD_IN_DNSWL_MED RBL: Sender listed at http://www.dnswl.org/, medium trust [129.206.210.211 listed in list.dnswl.org] -0.4 RP_MATCHES_RCVD Envelope sender domain matches handover relay domain X-Scan-Signature: 2e2f7cbbe9f38dd7bf3fac4fc012e6fc Subject: Re: LF: Re: MiniWhip antenna, fiber optic TEST SIGNALS NEEDED on 630m WSPR 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 Status: O X-Status: X-Keywords: X-UID: 2826 Hello Hideho, Am 14.07.2013 15:44, schrieb Hideho YAMAMURA: > > This is what I thought, and I made a pi shape filter : Gnd - CMC - Gnd. > Pse see attached. > That looks nice. Thanks for the images. What is the distance between the earth rods? And what is their length? What is the distance to the shack/house/noisy earth? There are other antennas on the tower. Are they not connected ot are there other coax cables going to the shack? Can you measure the coupling capacity between the shack ground and the RF ground (coax disconnected between the earths) using a 137 kHz sine voltage? > Yes indeed. > My isolation transformer has 27pF between the windings, 43 kilo-ohm on > 136kHz. > Much more than the 3.1pF of my Mini-DP. A good example, tnx. 73, Stefan/DK7FC