Return-Path: Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-dd01.r1000.mx.aol.com (Internet Inbound) with ESMTP id ECE4338000097; Sat, 23 Jun 2012 11:55:35 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1SiSfO-00026P-1A for rs_out_1@blacksheep.org; Sat, 23 Jun 2012 16:54:30 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1SiSfN-00026G-Eo for rsgb_lf_group@blacksheep.org; Sat, 23 Jun 2012 16:54:29 +0100 Received: from elasmtp-mealy.atl.sa.earthlink.net ([209.86.89.69]) by relay1.thorcom.net with esmtp (Exim 4.77) (envelope-from ) id 1SiSfE-0006Qs-ID for rsgb_lf_group@blacksheep.org; Sat, 23 Jun 2012 16:54:28 +0100 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=dk20050327; d=earthlink.net; b=JqNxQfDDLnrY6iU4dazPwCbj33+bpBdC/MCH9YwO7AXpIYGN6FdbmgJUZzfgpjsO; h=Message-ID:Date:From:Reply-To:To:Subject:Mime-Version:Content-Type:Content-Transfer-Encoding:X-Mailer:X-ELNK-Trace:X-Originating-IP; Received: from [209.86.224.65] (helo=wamui-june.atl.sa.earthlink.net) by elasmtp-mealy.atl.sa.earthlink.net with esmtpa (Exim 4.67) (envelope-from ) id 1SiSeq-0000m3-6L; Sat, 23 Jun 2012 11:53:56 -0400 Received: from 97.117.199.6 by webmail.c.earthlink.net with HTTP; Sat, 23 Jun 2012 11:53:54 -0400 Message-ID: <1474092.1340466836144.JavaMail.root@wamui-june.atl.sa.earthlink.net> Date: Sat, 23 Jun 2012 08:53:54 -0700 (GMT-07:00) From: Chris Trask To: rsgb_lf_group@blacksheep.org, rsgb_lf_group@blacksheep.org Mime-Version: 1.0 X-Mailer: EarthLink Zoo Mail 1.0 X-ELNK-Trace: b77fdb70683249914713efb067f9a722239a348a220c2609039f5dafb445d445e67eacb3b053a829350badd9bab72f9c350badd9bab72f9c350badd9bab72f9c X-Originating-IP: 209.86.224.65 X-Spam-Score: -0.0 (/) X-Spam-Report: Spam detection software, running on the system "relay1.thorcom.net", has identified this incoming email as possible spam. The original message has been attached to this so you can view it (if it isn't spam) or label similar future email. If you have any questions, see the administrator of that system for details. Content preview: > > > so what I would appreciate some suggestions about > > is the required low-impedance amplifier, similar to those used in > > air-core broadband loops, if it does make sense of course. Any ideas? > > > Hi Daniele, > >you may get some inspiration from LZ1AQ's loop amplifier design. > > http://www.lz1aq.signacor.com/docs/wsml/wideband-active-sm-loop-antenna.htm > [...] Content analysis details: (-0.0 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at http://www.dnswl.org/, no trust [209.86.89.69 listed in list.dnswl.org] -0.0 T_RP_MATCHES_RCVD Envelope sender domain matches handover relay domain X-Scan-Signature: 5c1f37c04fc013ebbc2288fd3791d043 Subject: Re: LF: Ferrite broadband (LF-MF) antenna? Content-Type: text/plain; charset=UTF-8 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: 0:2:453224256:93952408 X-AOL-SCOLL-URL_COUNT: 0 x-aol-sid: 3039ac1d408d4fe5e6f778f3 X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none > > > so what I would appreciate some suggestions about > > is the required low-impedance amplifier, similar to those used in > > air-core broadband loops, if it does make sense of course. Any ideas? > > > Hi Daniele, > >you may get some inspiration from LZ1AQ's loop amplifier design. > > http://www.lz1aq.signacor.com/docs/wsml/wideband-active-sm-loop-antenna.htm > This amplifier provides better performance than either the Wellbrook or Pixel commercial products: http://www.home.earthlink.net/~christrask/Paper009.html Chris Trask N7ZWY / WDX3HLB Senior Member IEEE http://www.home.earthlink.net/~christrask/