Return-Path: Received: from rly-md10.mx.aol.com (rly-md10.mail.aol.com [172.20.29.148]) by air-md05.mail.aol.com (v126.13) with ESMTP id MAILINMD053-92d4b2924e620a; Wed, 16 Dec 2009 13:20:29 -0500 Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by rly-md10.mx.aol.com (v125.7) with ESMTP id MAILRELAYINMD105-92d4b2924e620a; Wed, 16 Dec 2009 13:20:23 -0500 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1NKyQS-0007R0-Kj for rs_out_1@blacksheep.org; Wed, 16 Dec 2009 18:16:40 +0000 Received: from [83.244.159.144] (helo=relay3.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1NKyQS-0007Qr-9S for rsgb_lf_group@blacksheep.org; Wed, 16 Dec 2009 18:16:40 +0000 Received: from smtp-vbr9.xs4all.nl ([194.109.24.29]) by relay3.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1NKySn-0005hK-F6 for rsgb_lf_group@blacksheep.org; Wed, 16 Dec 2009 18:19:07 +0000 Received: from pc1 (ndb.demon.nl [82.161.81.65]) by smtp-vbr9.xs4all.nl (8.13.8/8.13.8) with ESMTP id nBGIIu6d047941 for ; Wed, 16 Dec 2009 19:19:05 +0100 (CET) (envelope-from roelof@ndb.demon.nl) Date: Wed, 16 Dec 2009 18:18:55 -0000 To: rsgb_lf_group@blacksheep.org From: "Roelof Bakker" MIME-Version: 1.0 References: <38A51B74B884D74083D7950AD0DD85E828ACB3@File-Server-HST.hst.e-technik.tu-darmstadt.de> Message-ID: In-Reply-To: <38A51B74B884D74083D7950AD0DD85E828ACB3@File-Server-HST.hst.e-technik.tu-darmstadt.de> User-Agent: Opera Mail/9.63 (Win32) X-Virus-Scanned: by XS4ALL Virus Scanner X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,none Subject: Re: LF: Noise cancelling by using optic transmission of RX signals Content-Type: text/plain; format=flowed; delsp=yes; charset=iso-8859-15 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-IP: 193.82.116.20 X-Mailer: Unknown (No Version) Hello Stefan, This sounds quite interesting. An other option is to use a twisted pair of CAT5 network cable and rf-isolation transformers at the antenne and receiver end. The power for the active antenna can be fed over a second twisted pair. I have used this in a few stubborn cases. It should be interesting to compare both methods. 73, Roelof bakker, pa0rdt