Return-Path: X-Spam-DCC: paranoid 1481; 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=-0.2 required=5.0 tests=BAYES_00,DNS_FROM_AHBL_RHSBL, HTML_40_50,HTML_MESSAGE,RATWARE_GECKO_BUILD,SPF_PASS 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 u6NDXpaC025715 for ; Sat, 23 Jul 2016 15:33:51 +0200 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1bQx08-0002mi-5j for rs_out_1@blacksheep.org; Sat, 23 Jul 2016 14:29:56 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1bQwzz-0002mZ-SR for rsgb_lf_group@blacksheep.org; Sat, 23 Jul 2016 14:29:47 +0100 Received: from mout02.posteo.de ([185.67.36.66]) by relay1.thorcom.net with esmtps (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.87) (envelope-from ) id 1bQwzx-0002C1-Hk for rsgb_lf_group@blacksheep.org; Sat, 23 Jul 2016 14:29:46 +0100 Received: from submission (posteo.de [89.146.220.130]) by mout02.posteo.de (Postfix) with ESMTPS id 8D78B20A15 for ; Sat, 23 Jul 2016 15:29:39 +0200 (CEST) Received: from customer (localhost [127.0.0.1]) by submission (posteo.de) with ESMTPSA id 3rxSzl02l3z103w for ; Sat, 23 Jul 2016 15:29:38 +0200 (CEST) Message-ID: <57937142.3070302@posteo.de> Date: Sat, 23 Jul 2016 15:29:38 +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: <5772DAC0.7080001@df3lp.de> <5773CA12.50009@posteo.de> <5773D53A.5070900@abelian.org> <577B9E96.8070807@posteo.de> <577CA9CF.6070303@abelian.org> <577F9982.50909@posteo.de> In-Reply-To: <577F9982.50909@posteo.de> X-Scan-Signature: b1e5ebccbad86c8ca1fd46d24f0285de Subject: VLF: Progress of my new VLF/ULF coil Content-Type: multipart/alternative; boundary="------------080705070301060106000207" 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 10.1.3.11 Status: O X-Status: X-Keywords: X-UID: 8434 This is a multi-part message in MIME format. --------------080705070301060106000207 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Hi all, I have completed the second stack of the new coil: https://dl.dropboxusercontent.com/u/19882028/ULF/20160723_144939.jpg It has 440 mH, together with the first stack (good magnetic coupling!) the coil has *1.77 H so far*. On my antenna i will find the resonance at about 5.5 kHz. With 2 stacks i can run about 10 kV, means 170 mA. That's not much. But it is just a test to see if the high voltage is hold without problems. The test will be done in a week or so. It has to hold 10 kV before i continue to wind the 3rd stack. 73, Stefan Am 08.07.2016 14:16, schrieb DK7FC: > I have completed the first stack (1 of 8) of my new coil intedned to > generate 40 kV at 2.97 kHz. It has 350 mH, the loss is 107 Ohm at 2970 > Hz. It can handle 350 mA antenna current without problems. For a HV > test i need the PA which is in use now :-) > Images:https://dl.dropboxusercontent.com/u/19882028/ULF/20160708_140755.jpg > and https://dl.dropboxusercontent.com/u/19882028/ULF/20160708_140728.jpg > > 73, Stefan > --------------080705070301060106000207 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: 7bit Hi all,

I have completed the second stack of the new coil: https://dl.dropboxusercontent.com/u/19882028/ULF/20160723_144939.jpg
It has 440 mH, together with the first stack (good magnetic coupling!) the coil has 1.77 H so far. On my antenna i will find the resonance at about 5.5 kHz. With 2 stacks i can run about 10 kV, means 170 mA. That's not much. But it is just a test to see if the high voltage is hold without problems. The test will be done in a week or so. It has to hold 10 kV before i continue to wind the 3rd stack.

73, Stefan

Am 08.07.2016 14:16, schrieb DK7FC:

I have completed the first stack (1 of 8) of my new coil intedned to generate 40 kV at 2.97 kHz. It has 350 mH, the loss is 107 Ohm at 2970 Hz. It can handle 350 mA antenna current without problems. For a HV test i need the PA which is in use now :-)
Images:https://dl.dropboxusercontent.com/u/19882028/ULF/20160708_140755.jpg and https://dl.dropboxusercontent.com/u/19882028/ULF/20160708_140728.jpg

73, Stefan

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