Return-Path: Received: from mtain-dg01.r1000.mx.aol.com (mtain-dg01.r1000.mx.aol.com [172.29.65.9]) by air-db05.mail.aol.com (v129.4) with ESMTP id MAILINDB051-85f14d14f94a23e; Fri, 24 Dec 2010 14:49:30 -0500 Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-dg01.r1000.mx.aol.com (Internet Inbound) with ESMTP id AE2E4380000B1; Fri, 24 Dec 2010 14:49:29 -0500 (EST) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1PWDcZ-0001Si-B8 for rs_out_1@blacksheep.org; Fri, 24 Dec 2010 19:48:11 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1PWDcY-0001SZ-V9 for rsgb_lf_group@blacksheep.org; Fri, 24 Dec 2010 19:48:10 +0000 Received: from lon1-post-3.mail.demon.net ([195.173.77.150]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1PWDcW-0002t3-G8 for rsgb_lf_group@blacksheep.org; Fri, 24 Dec 2010 19:48:10 +0000 Received: from sighthound.demon.co.uk ([80.177.174.126]) by lon1-post-3.mail.demon.net with esmtp (Exim 4.69) id 1PWDcV-0004b0-ea for rsgb_lf_group@blacksheep.org; Fri, 24 Dec 2010 19:48:07 +0000 Received: from svr3 (unknown [192.168.21.4]) by svr3.twatt.home (Postfix) with ESMTP id 8A18E1BE77 for ; Fri, 24 Dec 2010 19:46:51 +0000 (GMT) Date: Fri, 24 Dec 2010 19:46:50 +0000 From: John GM4SLV To: rsgb_lf_group@blacksheep.org Message-ID: <20101224194650.70e22b99@svr3> In-Reply-To: <006d01cba39a$de90e540$0401a8c0@xphd97xgq27nyf> References: <1293189590.6978.5.camel@pat-compaq-evo> <006d01cba39a$de90e540$0401a8c0@xphd97xgq27nyf> Organization: The Gammy Bird X-Mailer: Claws Mail 3.7.6 (GTK+ 2.22.0; i486-pc-linux-gnu) Mime-Version: 1.0 X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,none Subject: Re: LF: Re: Content-Type: text/plain Content-Type: text/plain; charset=US-ASCII 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-sid: 3039ac1d41094d14f9492fe7 X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none On Fri, 24 Dec 2010 18:46:25 -0000 "mal hamilton" wrote: > For receive the only requirement is a Crystal set and a bit of wire, > hardly rocket science. What absolute nonsense! To radiate RF you need an oscillator and an amplifier and a way of turning it on and off. Antennas are reciprocal, so the same antenna building skills are needed for both transmit and receive. Receiving is where the real engineering is done. A decent receiving station takes far more work than that of an alligator with a big mouth and no ears. I've never read a more telling Mal-ism in all my life. John GM4SLV