Return-Path: Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by klubnl.pl (8.14.4/8.14.4/Debian-8+deb8u2) with ESMTP id w4GGsKbV011918 for ; Wed, 16 May 2018 18:54:22 +0200 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1fIzc6-0002nt-TA for rs_out_1@blacksheep.org; Wed, 16 May 2018 17:49:18 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1fIzc6-0002nk-5s for rsgb_lf_group@blacksheep.org; Wed, 16 May 2018 17:49:18 +0100 Received: from mout01.posteo.de ([185.67.36.65]) by relay1.thorcom.net with esmtps (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.91_59-0488984) (envelope-from ) id 1fIzc4-0000Vp-K6 for rsgb_lf_group@blacksheep.org; Wed, 16 May 2018 17:49:17 +0100 Received: from submission (posteo.de [89.146.220.130]) by mout01.posteo.de (Postfix) with ESMTPS id BB2382104D for ; Wed, 16 May 2018 18:49:14 +0200 (CEST) X-DKIM-Result: Domain=posteo.de Result=Signature OK DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=posteo.de; s=2017; t=1526489354; bh=AHN5JDGQqum5338PGxEEdcrhqHD5t017BTL9Tt5FGOs=; h=Date:From:To:Subject:From; b=GpLPUbAKxpOh0Fc5+nvpGhJQA9hfl/0yBlry/Ad6+R15HlRmKA16sczPVEobDJwLk f1KGp0eEKut9J5LFnhHAx5Cx1XVj69eaDhnYAvpJknPBeEXf/JL8OuZ/eUPDHOztZu oFYjachUanWH9XhYrEbk1NwMu6qEBt3ETFjPx9llfEmiGF/VHhdF4OX1aTeW8bTS8t MshIL1uVgfVFrFwdeyKz0xJKw4L6Pdc+yEnJSYtToGAXFaIdqXYfEDpCh44qCy0QBY wQ0tAGt7FfTnnUieTaWzS4F21EzHq6sx8miSlJ87KlsvgnmCpZVLm+bdeJt0yVY2Ea 9cGKWSIxJxMYQ== Received: from customer (localhost [127.0.0.1]) by submission (posteo.de) with ESMTPSA id 40mL4S5Z1Vz9rxH for ; Wed, 16 May 2018 18:49:12 +0200 (CEST) Message-ID: <5AFC6108.7060706@posteo.de> Date: Wed, 16 May 2018 18:49:12 +0200 From: DK7FC User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; de; rv:1.9.1.8) Gecko/20100227 Thunderbird/3.0.3 MIME-Version: 1.0 To: rsgb_lf_group@blacksheep.org References: <622517661.20180516155923@gmail.com> <5AFC4B6A.80308@posteo.de> <1462187663.20180516163805@gmail.com> In-Reply-To: <1462187663.20180516163805@gmail.com> X-Spam-Score: -2.3 (--) X-Spam-Report: Spam detection software, running on the system "relay1.thorcom.net", has NOT identified this incoming email as spam. The original message has been attached to this so you can view it or label similar future email. If you have any questions, see @@CONTACT_ADDRESS@@ for details. Content preview: Hello Chris, Congrats to your working circuit. Am 16.05.2018 17:38, schrieb Chris Wilson: > Hello Stefan, Yes the waveforms look perfect, only a minor phase shift > from 12V supply to 55V. Maybe there is a transformer between antenna and the phase meter that starts to saturate at QRO? Some nonlineatity, that's my own idea. It could also happen in the variometer circuit, if you use the wrong cores. But it shouldn't. > But the vario circuit seems ultra sensitive, a > sniff of wind moving the antenna around sees the motor constantly > correcting. As does changing voltage to the amp considerably, so it > changes from "QRP" to QRO. Am I right in thinking adding another two > BAT42 diodes or whatever they are in each leg of the last opamp will > calm it down a bit? In the original schematic there is a potentiometer ( 1 MOhm) for adjusting the sensitivity. [...] Content analysis details: (-2.3 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -2.3 RCVD_IN_DNSWL_MED RBL: Sender listed at http://www.dnswl.org/, medium trust [185.67.36.65 listed in list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record -0.0 T_RP_MATCHES_RCVD Envelope sender domain matches handover relay domain 0.0 T_DKIM_INVALID DKIM-Signature header exists but is not valid X-Scan-Signature: 7aa9ad08848e488e22e0ff1d71f4ef1d Subject: Re: LF: Is it expected for antenna phase to change with varying power levels? Content-Type: text/plain; charset=ISO-8859-1; format=flowed 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 Hello Chris, Congrats to your working circuit. Am 16.05.2018 17:38, schrieb Chris Wilson: > Hello Stefan, Yes the waveforms look perfect, only a minor phase shift > from 12V supply to 55V. Maybe there is a transformer between antenna and the phase meter that starts to saturate at QRO? Some nonlineatity, that's my own idea. It could also happen in the variometer circuit, if you use the wrong cores. But it shouldn't. > But the vario circuit seems ultra sensitive, a > sniff of wind moving the antenna around sees the motor constantly > correcting. As does changing voltage to the amp considerably, so it > changes from "QRP" to QRO. Am I right in thinking adding another two > BAT42 diodes or whatever they are in each leg of the last opamp will > calm it down a bit? In the original schematic there is a potentiometer ( 1 MOhm) for adjusting the sensitivity. 73, Stefan