Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-de03.r1000.mx.aol.com (Internet Inbound) with ESMTP id 119E038000141; Thu, 28 Jul 2011 12:05:22 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1QmT4D-0006mQ-EI for rs_out_1@blacksheep.org; Thu, 28 Jul 2011 17:04:09 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1QmT4D-0006mH-1O for rsgb_lf_group@blacksheep.org; Thu, 28 Jul 2011 17:04:09 +0100 Received: from mtaout02-winn.ispmail.ntl.com ([81.103.221.48]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1QmT4B-0005Pi-FX for rsgb_lf_group@blacksheep.org; Thu, 28 Jul 2011 17:04:08 +0100 Received: from aamtaout04-winn.ispmail.ntl.com ([81.103.221.35]) by mtaout02-winn.ispmail.ntl.com (InterMail vM.7.08.04.00 201-2186-134-20080326) with ESMTP id <20110728160401.BGSD3933.mtaout02-winn.ispmail.ntl.com@aamtaout04-winn.ispmail.ntl.com> for ; Thu, 28 Jul 2011 17:04:01 +0100 Received: from [192.168.2.2] (really [82.5.252.56]) by aamtaout04-winn.ispmail.ntl.com (InterMail vG.3.00.04.00 201-2196-133-20080908) with ESMTP id <20110728160357.ZFHS25656.aamtaout04-winn.ispmail.ntl.com@[192.168.2.2]> for ; Thu, 28 Jul 2011 17:03:57 +0100 From: "Mike Dennison" To: rsgb_lf_group@blacksheep.org Date: Thu, 28 Jul 2011 17:03:50 +0100 MIME-Version: 1.0 Message-ID: <4E319676.5927.D87341@mike.dennison.ntlworld.com> In-reply-to: References: <4E292DA4.3090507@telus.net>, <139AEA250B474F2495A74613B2D8A528@JimPC>, X-mailer: Pegasus Mail for Windows (4.41) Content-description: Mail message body X-Cloudmark-Analysis: v=1.1 cv=JvdXmxIgLJv2/GthKqHpGJEEHukvLcvELVXUanXFreg= c=1 sm=0 a=uObrxnre4hsA:10 a=9YlaCzn6_68A:10 a=kj9zAlcOel0A:10 a=7jbe8Gz9uH0SdqLZUhQA:9 a=CjuIK1q_8ugA:10 a=HpAAvcLHHh0Zw7uRqdWCyQ==:117 X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,none Subject: Re: LF: Re: Lightning Story 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-SCOLL-SCORE: 0:2:349349856:93952408 X-AOL-SCOLL-URL_COUNT: 0 x-aol-sid: 3039ac1d40cb4e3188c24171 X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none Some years ago we had lightning strike a nearby lamp-post. All of the video recorders in the street were destroyed - except mine! I assumed that my earthed antenna formed a Faraday screen protecting my property. Mike, G3XDV =========== > >On the bright side, TL084s are quite reasonably priced fuses, so > >perhaps an IC socket would be the best investment ;-) > > Heh! Both the original part and its replacement were pulled from an > old pcb and cost nothing. Next time I'll use something else or > perhaps no preamp at all as dj1zb recommends. I had these loops for > years on LF without a preamp but found the VLF SAQ signal a bit too > weak here to feed directly into a soundcard. Somehow I don't fancy > the idea of putting protection against lightning strikes in the shack. > > Bill > >