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 4831638000112; Tue, 17 Apr 2012 17:50:35 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1SKGHQ-00027l-24 for rs_out_1@blacksheep.org; Tue, 17 Apr 2012 22:49:44 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1SKGHP-00027c-L0 for rsgb_lf_group@blacksheep.org; Tue, 17 Apr 2012 22:49:43 +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 1SKGHK-0005B6-5E for rsgb_lf_group@blacksheep.org; Tue, 17 Apr 2012 22:49:42 +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 q3HLnaZ1011458 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO) for ; Tue, 17 Apr 2012 23:49:37 +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 q3HLnawW027226 for ; Tue, 17 Apr 2012 23:49:36 +0200 Message-ID: <4F8DE545.5010009@iup.uni-heidelberg.de> Date: Tue, 17 Apr 2012 23:48:53 +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: <4F8DDEAC.2000007@iup.uni-heidelberg.de> In-Reply-To: X-Spam-Score: -2.3 (--) 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 Mauro, I think 40 turns are even better than 80. For 8970 Hz, your loop will work fine! No problem! As long as you are far away from the man made noise. Just take a walk and try :-) I think 80 turns may only be an advantage if one is interested in frequencies below 2 kHz or so. A year ago i planned some tests on 1670 Hz. This was why i built the loop. Maybe i can proceed with the experiment soon again. [...] Content analysis details: (-2.3 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] -0.0 T_RP_MATCHES_RCVD Envelope sender domain matches handover relay domain X-Scan-Signature: c0336009bd9bab526ca27d297ea7579a Subject: Re: LF: VLF, easyloop 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 x-aol-global-disposition: G X-AOL-SCOLL-SCORE: 0:2:465805184:93952408 X-AOL-SCOLL-URL_COUNT: 0 x-aol-sid: 3039ac1d41184f8de5ab7ccd X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none Hi Mauro, I think 40 turns are even better than 80. For 8970 Hz, your loop will work fine! No problem! As long as you are far away from the man made noise. Just take a walk and try :-) I think 80 turns may only be an advantage if one is interested in frequencies below 2 kHz or so. A year ago i planned some tests on 1670 Hz. This was why i built the loop. Maybe i can proceed with the experiment soon again. 73, Stefan Am 17.04.2012 23:39, schrieb IK1WVQ Mauro: > Hi Stefan, > how many turn in your hoola hop ??? > > My preamp with OP27 works well for SAQ reception with 40 turns hoola > hop , but for 8900Hz ?? > > 73 > > Mauro IK1WVQ > > > > At 23.20 17/04/12, you wrote: >> VLF, >> >> I just built the preamp of Renato Romero's design for a VLF loop >> preamp, http://www.vlf.it/easyloop/_easyloop.htm >> The circuit is very easy and compact and looks very promising, >> http://dl.dropbox.com/u/19882028/VLF/Easyloop.jpg. I took the LT1028 >> instead of the OP27 though. >> I'm looking forward to do a new /p VLF test with my hoola hop loop in >> the forest soon. >> Is there someone on air during the next days? >> >> 73, Stefan/DK7FC >> >> >> >> Nessun virus nel messaggio in arrivo. >> Controllato da AVG - www.avg.com >> Versione: 9.0.927 / Database dei virus: 271.1.1/4942 - Data di >> rilascio: 04/17/12 08:34:00 >