Return-Path: Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-de01.r1000.mx.aol.com (Internet Inbound) with ESMTP id 0BD8E38000090; Tue, 3 Jan 2012 10:02:34 -0500 (EST) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1Ri5s9-0000l2-TZ for rs_out_1@blacksheep.org; Tue, 03 Jan 2012 15:01:53 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1Ri5s9-0000kt-I3 for rsgb_lf_group@blacksheep.org; Tue, 03 Jan 2012 15:01:53 +0000 Received: from mail-gy0-f171.google.com ([209.85.160.171]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1Ri5s7-0001Zh-3C for rsgb_lf_group@blacksheep.org; Tue, 03 Jan 2012 15:01:53 +0000 Received: by ghy10 with SMTP id 10so10679993ghy.16 for ; Tue, 03 Jan 2012 07:01:44 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=message-id:date:from:user-agent:mime-version:to:subject:references :in-reply-to:content-type:content-transfer-encoding; bh=iJUQQIwABDMCu3Z+XkN2X/uKLfsHPNYT18MaXk0WYBQ=; b=ZW+yd2zUFkcFOLW3JeqRw9IwufYCvx88mxLYk0AltEfsTu+n8G7aOOgfY4Rt6mXYsW FMgHydUq5mIEYstv2WqAmBKocp/mt0KTdrr1Kg3zLjbc6Uy3kxpbvgkmfHSOJRz5igOT 6PHaq1DynFroL8Th+W3EkEVMr+FOn7kDdKt7E= Received: by 10.100.214.2 with SMTP id m2mr11677899ang.46.1325602904480; Tue, 03 Jan 2012 07:01:44 -0800 (PST) Received: from [10.0.252.100] (h9.158.82.166.dynamic.ip.windstream.net. [166.82.158.9]) by mx.google.com with ESMTPS id v35sm15813160yhj.14.2012.01.03.07.01.42 (version=TLSv1/SSLv3 cipher=OTHER); Tue, 03 Jan 2012 07:01:43 -0800 (PST) Message-ID: <4F03185A.3000306@gmail.com> Date: Tue, 03 Jan 2012 15:01:46 +0000 From: Dexter McIntyre W4DEX User-Agent: Messenger 9.0a1 (Windows/20071115) MIME-Version: 1.0 To: rsgb_lf_group@blacksheep.org References: <008301ccc97c$51d9fcf0$0401a8c0@xphd97xgq27nyf><003501ccca06$6bdef490$0401a8c0@xphd97xgq27nyf><4F02F9EA.1090101@iup.uni-heidelberg.de><004601ccca20$8aa7d1c0$0401a8c0@xphd97xgq27nyf> <005c01ccca25$9e534600$0401a8c0@xphd97xgq27nyf> In-Reply-To: <005c01ccca25$9e534600$0401a8c0@xphd97xgq27nyf> X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,none Subject: Re: LF: Antennas 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: 0:2:459591840:93952408 X-AOL-SCOLL-URL_COUNT: 0 X-AOL-SCOLL-AUTHENTICATION: mail_rly_antispam_dkim-d250.1 ; domain : gmail.com DKIM : pass x-aol-sid: 3039ac1d40c94f03188921e3 X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none What commercial two way LF stations still exist? All that I know of just transmit. Way back when there was two way LF traffic a high level receive signal was needed for the cat whisker detector to work :) Dex