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=-2.4 required=5.0 tests=BAYES_00,DNS_FROM_AHBL_RHSBL 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 t6KIoM6M004322 for ; Mon, 20 Jul 2015 20:50:23 +0200 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1ZHG5h-00061E-Mn for rs_out_1@blacksheep.org; Mon, 20 Jul 2015 19:47:05 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1ZHG5h-000615-E0 for rsgb_lf_group@blacksheep.org; Mon, 20 Jul 2015 19:47:05 +0100 Received: from mout.gmx.net ([212.227.17.21]) by relay1.thorcom.net with esmtps (TLSv1.2:DHE-RSA-AES256-GCM-SHA384:256) (Exim 4.85) (envelope-from ) id 1ZHG4q-0001F5-Bi for rsgb_lf_group@blacksheep.org; Mon, 20 Jul 2015 19:47:04 +0100 Received: from Clemens0811 ([79.237.151.146]) by mail.gmx.com (mrgmx102) with ESMTPSA (Nemesis) id 0M9NIY-1Z5l5N1WFK-00Cmcj for ; Mon, 20 Jul 2015 20:45:51 +0200 From: "Clemens Paul" To: References: <14333894.20150720161829@chriswilson.tv> In-Reply-To: <14333894.20150720161829@chriswilson.tv> Date: Mon, 20 Jul 2015 20:45:49 +0200 Message-ID: <99817E16948B44BA87F234F795E113D3@Clemens0811> MIME-Version: 1.0 X-Mailer: Microsoft Office Outlook 11 X-MimeOLE: Produced By Microsoft MimeOLE V6.1.7601.17609 Thread-Index: AdDC/9UDW4f/00sRTLifxCS06thJ5AAE2a/g X-Provags-ID: V03:K0:jHfzxce5uKrFwzKvGFnRFuL0jsE+NN6uWN8nB9iPo+E8Je0OwLG U7CMSslP58+hQnfgeItEXnrX//eI01kYMkSFfw2/IIhZyuPyjF/4NlQZdnJXPw6Ux8oIual ++WVW59NIkZ2xpWtP48PCAnuWTt/24dcwDtBNPv5f/e84qElSMTx82P/cLzXYs/c24p+VYw +lR734FfCURMwrQBOBAzQ== X-UI-Out-Filterresults: notjunk:1;V01:K0:RAw+exAohIU=:ucOOx1nP50kzSv1nJye2HO FV5IBiKkZlgMbgDNnmt9W6JuVJ+YPxTW929mWhGf5gGS3ST4qG+bkCfzu2zs+AEYbnC6nvHo/ G1vMfoYTuAh3gP3IgO6loffwlKrtNl7e3W/ndz//3idu2ISwCVdrb0kgS3CfRh4kGL/6ZtDdI OH0kUoI2n1oWW6iOeTKAuyfW6gWzmQrXYOKJ/pZbaS3mQTRkHc/y7uxwjEl/od2S8gDoa8Stm bBHV3JDeFUlEdJWitBKsHM6VZx+0LxJCoeLqzy7Wl0TH/95Vpqb6t7K/LtCQbDVeLkT6qFTe3 NmLsgtYfHBv6KrBCTtAt4w48JpGE3jJAQTNQScnDxkycaseFQCbEuA6K6gaw5VWg7I8//jNnw vRayFJyvlyBEd6vITNudTF3D3KgNdq234NQdBe9xJcqNkUI5Zv5Osff03keVUcIIz32mZnSrM IlIqoCv8/wueOjSheFvyFj/dPodJJ4IqOBfF+qQRn9XEUgy+8OWyblvoT2wmyjwCLxyaNX2QM oMswtYaBYY7syLhWVtCrBlcbi/ThGQdflM3UvaEtUSYlmusc2w3VSkU0VfH05Zh4V4LG3q5du 0eZYq9oEibClPH157u4W1FOhwBlMzJAvjESW+M0esCdyXa9Po3XO9GgdLF0RChyYkbpUlfHE1 mIrPO725jaNLtb2TsY7hS0GahS1RqtlbENQqJVcGIDj8gLPIEuSAhCrfXU4ktLVIOhpQ= X-Scan-Signature: 33d261536bb1467bb13d5764461d5ec4 Subject: LF: RE: Power monitoring at LF? 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: 3673 >Do any Bird elements give meaningful readings down at 136kHz? The lower frequency limit of the through line elements is 450kHz. Therefore you won't get any sensible readings at 136kHz. Besides that SWR calculations from the forward and reverse power readings generally are not very accurate at low SWR with the bird through line system. >are there any commercial alternatives to building something? Yes. I'm using a LP100A vector wattmeter http://www.telepostinc.com/lp100.html with dual coupler option Beside the standard coupler I have the RF sensor LPC6 (100kHz - 20MHz ,1KW) which is not listed on the web page but is available on request. The power rating is quite conservative. 73 Clemens DL4RAJ >-----Original Message----- >From: owner-rsgb_lf_group@blacksheep.org >[mailto:owner-rsgb_lf_group@blacksheep.org] On Behalf Of Chris Wilson >Sent: Monday, July 20, 2015 5:18 PM >To: rsgb_lf_group@blacksheep.org >Subject: LF: Power monitoring at LF? > >20 July 2015 > > >Do any Bird elements give meaningful readings down at 136kHz? If not >are there any commercial alternatives to building something? Thanks. > > > >-- > > >Best regards, > Chris mailto:chris@chriswilson.tv > >