Return-Path: X-Spam-DCC: paranoid 1356; 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,HTML_MESSAGE 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 tAJChfFV004859 for ; Thu, 19 Nov 2015 13:43:41 +0100 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1ZzOVu-0000qW-Pu for rs_out_1@blacksheep.org; Thu, 19 Nov 2015 12:40:34 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1ZzOVu-0000qN-Fh for rsgb_lf_group@blacksheep.org; Thu, 19 Nov 2015 12:40:34 +0000 Received: from rhcavuit01.kulnet.kuleuven.be ([134.58.240.129] helo=cavuit01.kulnet.kuleuven.be) by relay1.thorcom.net with esmtps (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.86) (envelope-from ) id 1ZzOUu-00070s-VL for rsgb_lf_group@blacksheep.org; Thu, 19 Nov 2015 12:40:33 +0000 X-KULeuven-Envelope-From: rik.strobbe@fys.kuleuven.be X-KULeuven-Scanned: Found to be clean X-KULeuven-ID: EEF681380B6.A9D97 X-KULeuven-Information: Katholieke Universiteit Leuven Received: from icts-p-smtps-2.cc.kuleuven.be (icts-p-smtps-2e.kulnet.kuleuven.be [134.58.240.34]) by cavuit01.kulnet.kuleuven.be (Postfix) with ESMTP id EEF681380B6 for ; Thu, 19 Nov 2015 13:39:12 +0100 (CET) Received: from ICTS-S-HUB4.luna.kuleuven.be (icts-s-hub4.luna.kuleuven.be [10.112.9.18]) (using TLSv1 with cipher AES128-SHA (128/128 bits)) (No client certificate requested) by icts-p-smtps-2.cc.kuleuven.be (Postfix) with ESMTPS id EE1422009A for ; Thu, 19 Nov 2015 13:39:12 +0100 (CET) Received: from ICTS-S-MBX1.luna.kuleuven.be ([fe80::edaf:341f:90e:f70e]) by ICTS-S-HUB4.luna.kuleuven.be ([fe80::c11b:83f0:c46c:c366%26]) with mapi id 14.03.0224.002; Thu, 19 Nov 2015 13:39:12 +0100 X-Kuleuven: This mail passed the K.U.Leuven mailcluster From: Rik Strobbe To: "rsgb_lf_group@blacksheep.org" Thread-Topic: Variometer positioning Thread-Index: AQHRIsPRt3gfkAUKYEiWSrrnZPOCB56jSH1UgAAAlCE= Date: Thu, 19 Nov 2015 12:39:11 +0000 Message-ID: <7E7DFBB4D102A04DB5ADC88D66628A4A44476576@ICTS-S-MBX1.luna.kuleuven.be> References: <511722761.20151119121000@chriswilson.tv> In-Reply-To: <511722761.20151119121000@chriswilson.tv> Accept-Language: nl-BE, en-GB, en-US Content-Language: nl-BE X-MS-Has-Attach: X-MS-TNEF-Correlator: x-mimectl: Produced By Microsoft Exchange V14.3.123.2 x-originating-ip: [10.112.11.15] MIME-Version: 1.0 X-HELO-Warning: Remote host 134.58.240.129 (rhcavuit01.kulnet.kuleuven.be) used invalid HELO/EHLO cavuit01.kulnet.kuleuven.be - verification failed X-Scan-Signature: 7c995d39cde70605aa76dd18810a4256 Subject: LF: RE: Variometer positioning Content-Type: multipart/alternative; boundary="_000_7E7DFBB4D102A04DB5ADC88D66628A4A44476576ICTSSMBX1lunaku_" 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: 5170 --_000_7E7DFBB4D102A04DB5ADC88D66628A4A44476576ICTSSMBX1lunaku_ Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Hi Chris, for practical (safety) reasons I would place the remote controlled variomet= er at the low voltage end of the loading coil (before the loading coil, see= n from the TX). 73, Rik ON7YD ________________________________ Van: owner-rsgb_lf_group@blacksheep.org [owner-rsgb_lf_group@blacksheep.org= ] namens Chris Wilson [chris@chriswilson.tv] Verzonden: donderdag 19 november 2015 13:10 Aan: rsgb_lf_group@blacksheep.org Onderwerp: LF: Variometer positioning 19 November 2015 I am adding remote variometer control to my 136kHz loading coil. I would like to know what impact the placement of the variometer has. For example, I could add it before the bottom winding of the loading coil, in the middle, by splitting the windings, or at the top, between top winding and aerial. I am guessing I should place it before the coil's bottom winding to minimise voltages on it, but am unsure what other impact this may have. I am hoping to use this ex Russian device in the link below, motor driven via its reduction gear quadrant, via a 1 RPM drive motor. It goes from about 16 to 100uH with the windings wired in series. Images of variometer here: http://www.chriswilson.tv/variometer.zip Thanks. -- Best regards, Chris 2E0ILY mailto:chris@chriswilson.tv --_000_7E7DFBB4D102A04DB5ADC88D66628A4A44476576ICTSSMBX1lunaku_ Content-Type: text/html; charset="iso-8859-1" Content-ID: Content-Transfer-Encoding: quoted-printable

Hi Chris,

 

for practical (safety= ) reasons I would place the remote controlled variometer at the low voltage end of the loading c= oil (before the load= ing coil, seen from the TX).

 

73, Rik  ON7YD

 

Van: owner-rsgb_lf_group@blacksheep.org [owner-rsgb_lf_group@blacksheep.org] namens<= a target=3D"_blank"> Chris Wilson [chris@chris= wilson.tv]
Verzonden: donderdag 19 november 2015 13:10
Aan: rsgb_l= f_group@blacksheep.org
Onderwerp: LF: Variometer posit= ioning

19 November 2015


I am adding&nbs= p;remote variometer<= a target=3D"_blank"> control to my 136kHz loading coil. I
would like to k= now what impact the = placement of the variometer has.
For example, I could=  add it be= fore the bottom wind= ing of the loading
coil, in the middle, = ;by splitting the wi= ndings, or at the to= p, between
top winding and aerial. I am guessing I should place it before the
coil's bottom windin= g to minimise voltages on it, but&n= bsp;am unsure what
other impact this may have. I am hoping to use this ex Russian device
in the link below, motor driven via its reduction gear quadrant, via a
1 RPM drive motor. It goes from about 16 to 100uH=  with the windin= gs
wired in series.

Images of variometer= here: http= ://www.chriswilson.tv/variometer.zip


Thanks.



--


Best regards,
 Chris  2E0ILY=             = ;            &n= bsp;  mailto:chris@chriswilson.tv


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