Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-mh03.r1000.mx.aol.com (Internet Inbound) with ESMTP id 3CAA9380001A4; Fri, 30 Sep 2011 09:27:09 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1R9d6G-0006e2-F2 for rs_out_1@blacksheep.org; Fri, 30 Sep 2011 14:26:00 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1R9d6G-0006dt-1R for rsgb_lf_group@blacksheep.org; Fri, 30 Sep 2011 14:26:00 +0100 Received: from mail-dy0-f43.google.com ([209.85.220.43]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1R9d6D-0006aE-UW for rsgb_lf_group@blacksheep.org; Fri, 30 Sep 2011 14:26:00 +0100 Received: by dyj3 with SMTP id 3so70882dyj.16 for ; Fri, 30 Sep 2011 06:25:51 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type; bh=/B3UDxcEuSXtmqGId27r/cEuFlSaJKqfXnUaZg6t1zs=; b=k/6CvxCkoq8lezEO+Yd1kjaE9QIwOM7u0DJhAHjXVQckSgXN0d44/TBO8nagl3L8KM VOLFtX4awKl2Rj5StTaJefjRl39SROfyMr8ovZeSPJ5RWFB05gMqk+qf27xka3+q/e2T P/ELzHncwvbBn9qx7hyUPE0EgDzGeE7WQHS/U= MIME-Version: 1.0 Received: by 10.216.135.93 with SMTP id t71mr2824694wei.37.1317389151451; Fri, 30 Sep 2011 06:25:51 -0700 (PDT) Received: by 10.180.81.170 with HTTP; Fri, 30 Sep 2011 06:25:51 -0700 (PDT) In-Reply-To: <20108458101B4C2F82BCA69885FB890E@JimPC> References: <68BE37BD69E54DEE89CEBA8E30E9B94E@PcMinto> <4E484183.9090805@iup.uni-heidelberg.de> <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$0401a8c0@xphd97xgq27nyf> <4E4BF289.2070500@iup.uni-heidelberg.de> <002501cc5d33$a7f37f90$0401a8c0@xphd97xgq27nyf> <4E84C757.2040605@iup.uni-heidelberg.de> <000e01cc7f59$8fcc9cb0$0401a8c0@xphd97xgq27nyf> <20108458101B4C2F82BCA69885FB890E@JimPC> Date: Fri, 30 Sep 2011 14:25:51 +0100 Message-ID: From: Roger Lapthorn To: rsgb_lf_group@blacksheep.org X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,HTML_MESSAGE=0.001 Subject: Re: LF: Ferrite RX antennas Content-Type: multipart/alternative; boundary=0016e6d99ac76739de04ae2890dd X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: * X-Spam-Status: No, hits=1.7 required=5.0 tests=BANG_MONEY,HTML_30_40, HTML_MESSAGE 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: 0:2:478602976:93952408 X-AOL-SCOLL-URL_COUNT: 0 X-AOL-SCOLL-AUTHENTICATION: mail_rly_antispam_dkim-d020.1 ; domain : gmail.com DKIM : pass x-aol-sid: 3039ac1d60d74e85c3ac3690 X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none --0016e6d99ac76739de04ae2890dd Content-Type: text/plain; charset=ISO-8859-1 Maybe a load of hot air will do as well? On 30 September 2011 14:14, James Moritz wrote: > 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 > > -- http://g3xbm-qrp.blogspot.com/ http://www.g3xbm.co.uk http://www.youtube.com/user/g3xbm https://sites.google.com/site/sub9khz/ --0016e6d99ac76739de04ae2890dd Content-Type: text/html; charset=ISO-8859-1 Maybe a load of hot air will do as well?

On 30 September 2011 14:14, James Moritz <james.moritz@btopenworld.com> wrote:
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




--
http://g3xbm-qrp.blogspot.com/
http://www.g3xbm.co.uk
http://www.youtube.com/user/g3xbm
https://sites.google.com/site/sub9khz/

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