Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-dc05.r1000.mx.aol.com (Internet Inbound) with ESMTP id 96AA538000133; Fri, 30 Sep 2011 18:01:46 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1R9l87-0007Xm-0L for rs_out_1@blacksheep.org; Fri, 30 Sep 2011 23:00:27 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1R9l86-0007Xd-G8 for rsgb_lf_group@blacksheep.org; Fri, 30 Sep 2011 23:00:26 +0100 Received: from relay2.uni-heidelberg.de ([129.206.210.211]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1R9l85-0001Nu-3M for rsgb_lf_group@blacksheep.org; Fri, 30 Sep 2011 23:00:26 +0100 Received: from freitag.iup.uni-heidelberg.de (freitag.iup.uni-heidelberg.de [129.206.29.204]) by relay2.uni-heidelberg.de (8.13.8/8.13.8) with ESMTP id p8UM0NLe001650 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO) for ; Sat, 1 Oct 2011 00:00:24 +0200 Received: from [129.206.22.206] (pc206.iup.uni-heidelberg.de [129.206.22.206]) by freitag.iup.uni-heidelberg.de (8.12.11.20060308/8.11.2) with ESMTP id p8UM0Nj8026478 for ; Sat, 1 Oct 2011 00:00:23 +0200 Message-ID: <4E863BD6.7060004@iup.uni-heidelberg.de> Date: Fri, 30 Sep 2011 23:59:50 +0200 From: =?UTF-8?B?U3RlZmFuIFNjaMOkZmVy?= User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; de; rv:1.9.1.8) Gecko/20100227 Thunderbird/3.0.3 MIME-Version: 1.0 To: rsgb_lf_group@blacksheep.org References: <68BE37BD69E54DEE89CEBA8E30E9B94E@PcMinto> <4E494A57.90105@freenet.de> <4E4956DA.1060201@iup.uni-heidelberg.de> <4E49643E.5090708@freenet.de> <4E496FF9.4040608@iup.uni-heidelberg.de> <0A4ED65EC3B244A3BD0DAD6ACFF43793@JimPC> <4E4A5597.4070709@iup.uni-heidelberg.de> <3746D901368F4C139E414F9110153EEE@JimPC> <4E4A9A1F.2060600@iup.uni-heidelberg.de> <1B55B625C3CD4D529EC361D9C5D79D96@JimPC> <4E4AD4C8.8000509@iup.uni-heidelberg.de> <4E4AEF31.5010306@iup.uni-heidelberg.de> <1FF2FAD9854F4890A338A9F862D93FE9@JimPC> <8CE2AD319756ED7-1C20-14370@Webmail-m104.sysops.aol.com> <4E4BC177.6050902@iup.uni-heidelberg.de> <001f01cc5cf9$4b734780$0401a8c0@xphd97xgq27nyf> <4E4BF289.2070500@iup.uni-heidelberg.de> <003301cc5d07$d4e2a840$0401a8c0@xphd97xgq2! 7nyf> <4E4C24FE.8030905@iup.uni-hei! delberg.de> <002501cc5d33$a7f37f90$0401a8c0@xphd97xgq27nyf> <4E84C757.2040605@iup.uni-heidelberg.de> <000e01cc7f59$8fcc9cb0$0401a8c0@xphd97xgq27nyf> <20108458101B4C2F82BCA69885FB890E@JimPC> In-Reply-To: <20108458101B4C2F82BCA69885FB890E@JimPC> X-Spam-Score: 1.4 (+) X-Spam-Report: autolearn=disabled,RATWARE_GECKO_BUILD=1.426 Subject: Re: LF: Ferrite RX antennas Content-Type: text/plain; charset=UTF-8; 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=0.9 required=5.0 tests=BANG_MONEY 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: 0:2:445379968:93952408 X-AOL-SCOLL-URL_COUNT: 0 x-aol-sid: 3039ac1d40854e863c4a23c0 X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none Hello Jim, Maybe liquid helium and a superconductor material? ;-) 73, Stefan Am 30.09.2011 15:14, schrieb James Moritz: > Dear Mal, LF Group, > > G3KEV wrote: >> Some commercial produced coils encased in helium tubes had vy high Q >> that would rival the ferrite variety used today. > > Helium tubes? Sounds like a good way of separating unwary amateurs > from their money! > > Cheers, JimMoritz > 73 de M0BMU