Return-Path: Received: from rly-mb09.mx.aol.com (rly-mb09.mail.aol.com [172.21.131.167]) by air-mb05.mail.aol.com (v126.13) with ESMTP id MAILINMB052-d294b199b92388; Fri, 04 Dec 2009 18:30:37 -0500 Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by rly-mb09.mx.aol.com (v125.7) with ESMTP id MAILRELAYINMB095-d294b199b92388; Fri, 04 Dec 2009 18:30:27 -0500 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1NGhaV-0003bU-LO for rs_out_1@blacksheep.org; Fri, 04 Dec 2009 23:29:23 +0000 Received: from [83.244.159.144] (helo=relay3.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1NGhaV-0003bL-3r for rsgb_lf_group@blacksheep.org; Fri, 04 Dec 2009 23:29:23 +0000 Received: from out1.ip06ir2.opaltelecom.net ([62.24.128.242]) by relay3.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1NGhaT-0001Oc-7l for rsgb_lf_group@blacksheep.org; Fri, 04 Dec 2009 23:29:23 +0000 X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: ApoEAJIpGUtOlOfC/2dsb2JhbADXAYQzBA X-IronPort-AV: E=Sophos;i="4.47,344,1257120000"; d="scan'208";a="290767386" Received: from unknown (HELO TraceyPC) ([78.148.231.194]) by out1.ip06ir2.opaltelecom.net with SMTP; 04 Dec 2009 23:29:15 +0000 Message-ID: <4AABF465BDAF458EAD9C4A5C7071B220@TraceyPC> From: "Tracey Gardner" To: References: <38A51B74B884D74083D7950AD0DD85E828AB4A@File-Server-HST.hst.e-technik.tu-darmstadt.de> <005601ca7534$6ea90400$030ff004@ctrask> In-Reply-To: <005601ca7534$6ea90400$030ff004@ctrask> Date: Fri, 4 Dec 2009 23:29:13 -0000 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Windows Mail 6.0.6002.18005 X-MimeOLE: Produced By Microsoft MimeOLE V6.0.6002.18005 X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,none Subject: LF: Re: Re: Re: Active Antenna Preamp of Bernd/DF8ZR Content-Type: text/plain; format=flowed; charset="iso-8859-1"; reply-type=original 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=0.1 required=5.0 tests=MISSING_OUTLOOK_NAME 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-IP: 193.82.116.20 It works OK for me now! :-) Tracey ----- Original Message ----- From: "Chris Trask" To: Sent: Friday, December 04, 2009 10:52 PM Subject: LF: Re: Re: Active Antenna Preamp of Bernd/DF8ZR > > >> > Now, Bernd has posted the circuit of his preamp for active antennas: >> > >> > http://www.mydarc.de/df8zr/lf-active-antenna.pdf >> > >> > It's nothing fundamental new. But it's just working very fine, with an >> > overvoltage shielded input. DLF (153kHz) gets attenuated by abt 40dB, >> > compared to the sigs in the wanted frequency range. Gain is abt 23dB. >> > It was published in summer 2003 in the CQDL. >> >> The URL is an invalid one >> > > Works okay here. > > Chris > >