Return-Path: X-Spam-DCC: paranoid 1170; Body=2 Fuz1=2 Fuz2=2 X-Spam-Checker-Version: SpamAssassin 3.1.3 (2006-06-01) on lipkowski.org X-Spam-Level: X-Spam-Status: No, score=-2.2 required=5.0 tests=BAYES_00,DNS_FROM_AHBL_RHSBL, FORGED_RCVD_HELO autolearn=no version=3.1.3 Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by paranoid.lipkowski.org (8.13.7/8.13.7) with ESMTP id tBTBr8jq019378 for ; Tue, 29 Dec 2015 12:53:09 +0100 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1aDsfY-0001qb-A3 for rs_out_1@blacksheep.org; Tue, 29 Dec 2015 11:42:24 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1aDsfX-0001qS-I2 for rsgb_lf_group@blacksheep.org; Tue, 29 Dec 2015 11:42:23 +0000 Received: from smarthost01d.mail.zen.net.uk ([212.23.1.7]) by relay1.thorcom.net with esmtp (Exim 4.86) (envelope-from ) id 1aDseT-00073M-9m for rsgb_lf_group@blacksheep.org; Tue, 29 Dec 2015 11:42:22 +0000 Received: from [82.70.254.222] (helo=OfficeWin7.lan) by smarthost01d.mail.zen.net.uk with esmtp (Exim 4.80) (envelope-from ) id 1aDseD-0009eC-A0 for rsgb_lf_group@blacksheep.org; Tue, 29 Dec 2015 11:41:01 +0000 Date: Tue, 29 Dec 2015 11:41:00 +0000 From: Chris Wilson Organization: Gatesgarth Developments X-Priority: 3 (Normal) Message-ID: <1210332525.20151229114100@chriswilson.tv> To: "Dr. Wolf Ostwald" In-Reply-To: <56768FB9.6050506@t-online.de> References: <56768FB9.6050506@t-online.de> MIME-Version: 1.0 X-Originating-smarthost01d-IP: [82.70.254.222] X-Scan-Signature: 64437c466041e93ffedda7fb96b22b71 Subject: Re: LF: Variometer in the shack Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit 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-Scanned-By: MIMEDefang 2.56 on 10.1.3.10 Status: O X-Status: X-Keywords: X-UID: 6003 Hello Wolf, Sunday, December 20, 2015 Thanks to all, with apologies for the delay in replying, hectic here! I will find a waterproof means of having the variometer by the loading coil, as opinion suggests having it in the shack is a bad idea. Plans for 2016 are a better ground system, a dedicated LF antenna, as high as I can get it, and an attempt at my full licence so I can get on MF as well! I also have two 50V 60 Amp SMPS from big computer servers that are isolated, and intend connecting them in series so my G3YXM amp sees a full, regulated 100V on the FET's, rather than an unregulated saggy, toroidal heating 100V dropping to 79V under load. The toroidal mains transformer gets uncomfortably hot on QRSS transmissions, and couldn't be run like that for long! I would like to thank everyone for their patient help over this year, and wish everyone a healthy and prosperous New Year. Best regards, Chris 2E0ILY mailto:chris@chriswilson.tv My part time LF grabber is at http://www.chriswilson.tv/grabber.html > HI ! > past the variometer there is no 50 Ohms impedance, the stepup in voltage > will be tremendous. The parallel capacitance of the coax will shunt a > lot of the energy transported. > Definitely the worse the more inductance has to be introduced. In my > opinion its a no go. > 73 de wolf df2py