Return-Path: Received: from rly-da07.mx.aol.com (rly-da07.mail.aol.com [172.19.129.81]) by air-da06.mail.aol.com (v121.4) with ESMTP id MAILINDA064-a7d474e469a1c4; Wed, 28 Nov 2007 23:57:09 -0500 Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by rly-da07.mx.aol.com (v121.4) with ESMTP id MAILRELAYINDA075-a7d474e469a1c4; Wed, 28 Nov 2007 23:57:00 -0500 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1IxbRY-0000xo-1n for rs_out_1@blacksheep.org; Thu, 29 Nov 2007 04:56:08 +0000 Received: from [83.244.159.144] (helo=relay3.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1IxbRX-0000xf-Jh for rsgb_lf_group@blacksheep.org; Thu, 29 Nov 2007 04:56:07 +0000 Received: from smtp104.plus.mail.re1.yahoo.com ([69.147.102.67]) by relay3.thorcom.net with smtp (Exim 4.63) (envelope-from ) id 1IxbRX-00066K-4f for rsgb_lf_group@blacksheep.org; Thu, 29 Nov 2007 04:56:07 +0000 Received: (qmail 98957 invoked from network); 29 Nov 2007 04:56:00 -0000 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=s1024; d=yahoo.com; h=Received:X-YMail-OSG:Message-ID:Date:From:User-Agent:MIME-Version:To:Subject:References:In-Reply-To:Content-Type:Content-Transfer-Encoding; b=JSiSDmHFXlaiO8m5vcFxTyiIJECRjKjGWRZrsF/kY1oy9yLQkZtqKcdUvoPwsnHkKy2o1SatTC3yc8ZFmoisIn+N9lDlFMPBp9fe1gMlfudQVemZByfRjYd8w0asv1RpZqO2wz1qoH7Ej2PhUZUFg59cnjRjydK10C0yQ9WklPg= ; Received: from unknown (HELO ?192.168.1.103?) (we0h@75.168.164.227 with plain) by smtp104.plus.mail.re1.yahoo.com with SMTP; 29 Nov 2007 04:56:00 -0000 X-YMail-OSG: AdfuuWMVM1m4H5z4srvVukaY.z_BcQwMa4gUJh.lQzjgC874.ujbgOhH51dNIVzynFl69vv2AJ5ZqRS_N6Cbi2h0cUL9zmAV6lwX6XoWFtT3XAUGNQ-- Message-ID: <474E465E.9090001@yahoo.com> Date: Wed, 28 Nov 2007 22:55:58 -0600 From: WE0H User-Agent: Thunderbird 2.0.0.9 (Windows/20071031) MIME-Version: 1.0 To: rsgb_lf_group@blacksheep.org References: <20071120112651.1dfa3a43@saluki.ngw.uk.com> <000201c83234$053e0d20$0b01a8c0@weazle> In-Reply-To: <000201c83234$053e0d20$0b01a8c0@weazle> DomainKey-Status: good (testing) Subject: Re: LF: Antenna question 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-IP: 193.82.116.20 X-AOL-SCOLL-AUTHENTICATION: listenair ; SPF_helo : n X-AOL-SCOLL-AUTHENTICATION: listenair ; SPF_822_from : n X-Mailer: Unknown (No Version) My guess is the existing fence wire will couple a bit to the antenna wire but possibly just aid the signal. Try it with a shorter wire that you already have and see how that works. If the signals are there but weak, go with a longer wire. If all seems fare with the longer wire, go buy or however obtain the 1k' or so wire and let us know how that does. I think it will be just fine with whatever wire you use. As long as the existing fence wires don't cross over or go under any powerlines, I think your antenna wire will be very low noise. An idea for inexpensive wire would be the galvanized fence wire from the farm store. Put out a half mile of it and see what happens. It's solderable too. Mike WE0H J. B. Weazle McCreath wrote: > Hello LFers, > > My farmer neighbour has kindly offered me the use of his fence posts > to erect a "longwire" receiving antenna. I could make it well over a > thousand feet in length and run out of $ for the wire before I ran out > of fence posts! Would the close proximity of the fence itself, about > eight inches below the antenna wire, have any negative effects? > > The fence is the conventional rectangular grid type, with six horizontal > wires spaced about eight inches apart, and with vertical wires spaced > about a foot apart. It's fastened to the wooden posts with staples and > it appears to be galvanized steel. There is no intentional grounding of > the fence, but in many places the lowest horizontal wire does touch > the ground. > > Any comments or suggestions are most welcome. Thanks in advance. > > 73, J.B., VE3EAR - VE3WZL > Solar and wind powered > Lowfer " EAR" 188.830 > EN93dr > > http://www.hurontel.on.ca/~weazle