Return-Path: Received: from rly-me07.mx.aol.com (rly-me07.mail.aol.com [172.20.83.41]) by air-me03.mail.aol.com (v126.13) with ESMTP id MAILINME032-9cc4b2d0dfa29b; Sat, 19 Dec 2009 12:31:54 -0500 Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by rly-me07.mx.aol.com (v125.7) with ESMTP id MAILRELAYINME078-9cc4b2d0dfa29b; Sat, 19 Dec 2009 12:31:39 -0500 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1NM34Y-0002hE-60 for rs_out_1@blacksheep.org; Sat, 19 Dec 2009 17:26:30 +0000 Received: from [193.82.116.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1NM34X-0002h5-Pz for rsgb_lf_group@blacksheep.org; Sat, 19 Dec 2009 17:26:29 +0000 Received: from fg-out-1718.google.com ([72.14.220.157]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1NM37s-0003M4-6Y for rsgb_lf_group@blacksheep.org; Sat, 19 Dec 2009 17:29:58 +0000 Received: by fg-out-1718.google.com with SMTP id e12so885733fga.10 for ; Sat, 19 Dec 2009 09:30:36 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=googlemail.com; s=gamma; h=domainkey-signature:mime-version:received:in-reply-to:references :date:message-id:subject:from:to:content-type; bh=T8ixUgJp2gnBBkaZXfDNCPDbSIuhJlO4xjtWMKVFFXA=; b=qnSJXLMeTlJvN24b6/0PJm+e3KJpmPQU18QhpX8LoII+We6hKiXrC+Hx7Ruxe/N8/D 63D1Nv0oLv0Aqf1fC+XQAa3DRs2K/07Wqi9snXlFLNtsA+UAEc05DHFTPbWlnGmd/Y/L Z2DJRTfHuQT931hwUHcY+bCMgWf+jm+/r+ORg= DomainKey-Signature: a=rsa-sha1; c=nofws; d=googlemail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type; b=WTj3x09wOhU4a/gieHkxXGwZt0kuKgHllRIS4ua9fhYWpj1WbeToE6SLyRuVkNdG5u DTkuo3RhjUEYxXNIMYsvMiprwF5RJKIKnudzxhpVPcXa/ED57epljrifd3RTzHU1q5Kb iIW0WKxKvUspY3utqjsrA8tMCRLdviFv4z3pQ= MIME-Version: 1.0 Received: by 10.239.186.199 with SMTP id i7mr538625hbh.102.1261243836492; Sat, 19 Dec 2009 09:30:36 -0800 (PST) In-Reply-To: <002501ca80cc$2df97f90$0301a8c0@your91hoehfy9g> References: <38A51B74B884D74083D7950AD0DD85E828ACB3@File-Server-HST.hst.e-technik.tu-darmstadt.de> <346854e9698cbf94f4483c66682bb63b.squirrel@webmail.xs4all.nl> <001e01ca80b0$392cb0b0$8d01a8c0@JAYDELL> <002501ca80cc$2df97f90$0301a8c0@your91hoehfy9g> Date: Sat, 19 Dec 2009 17:30:36 +0000 Message-ID: From: Andy Talbot To: rsgb_lf_group@blacksheep.org X-Karma: unknown: DomainKey-Status: good (testing) X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,none Subject: Re: LF: Re: Re: Noise cancelling by using optic transmission of RX signals 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-IP: 193.82.116.20 X-AOL-SCOLL-AUTHENTICATION: mail_rly_antispam_dkim-d277.1 ; domain : googlemail.com DKIM : pass X-Mailer: Unknown (No Version) Not true on HF Rx. The UK Navy have used active whips on their ships for many years for HF Receiving - the AVK is a long tried and tested unit. A two-metre long piece of scaffold pole forming the E-Field probe into a wide dynamic range high input-Z, unity voltage-gain buffer amp. Specified for 10kHz tto 50MHz Metal hulled ships do have to advantage of giving a very good ground connection, however, and paying proper attention to decoupling and bonding prevents outside-braid induced interference from gettign anywhere near teh antenna probe. Andy www.g4jnt.com This email has been scanned for damaging side-effects by the health and safety police > There is no substitute for a real resonant antenna at the working frequency. > G3KEV >