Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on lipkowski.org X-Spam-Level: X-Spam-Status: No, score=-2.3 required=5.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, RCVD_IN_DNSWL_MED,SPF_PASS,T_DKIM_INVALID autolearn=ham autolearn_force=no version=3.4.0 X-Spam-DCC: : mailn 1480; Body=2 Fuz1=2 Fuz2=2 Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by lipkowski.org (8.14.4/8.14.4/Debian-8+deb8u1) with ESMTP id v1IHc7UE011844 for ; Sat, 18 Feb 2017 18:38:08 +0100 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1cf8uF-0001KF-Qp for rs_out_1@blacksheep.org; Sat, 18 Feb 2017 17:34:47 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1cf8uF-0001K6-Cc for rsgb_lf_group@blacksheep.org; Sat, 18 Feb 2017 17:34:47 +0000 Received: from porthos.netcom.co.uk ([217.72.171.73]) by relay1.thorcom.net with esmtps (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.87) (envelope-from ) id 1cf8uC-0004eu-AW for rsgb_lf_group@blacksheep.org; Sat, 18 Feb 2017 17:34:46 +0000 X-DKIM-Result: Domain=abelian.org Result=Signature OK DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=abelian.org ; s=default; h=Content-Transfer-Encoding:Content-Type:In-Reply-To: MIME-Version:Date:Message-ID:From:References:To:Subject:Sender:Reply-To:Cc: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help:List-Unsubscribe: List-Subscribe:List-Post:List-Owner:List-Archive; bh=xmZQp6m4fwCbtSYJ8gXVqz/FU0xIyYDS0mdWKbrnD48=; b=SfqZiwBZS0it5oWgkFrKX8DMKG O/b4AYfpcuhekxlHrdmDI5Vk9T+Sjc1mkRt1bvpTiEqzZwfwgwCzhI+XLDk2MdQER0h50aIxLQKXI N3mKeRIt6JzHrhQdaFdK2wV23VItciJ0xLAQNsK2n3wrZHtdzfK/sGdLIC16/6Jl4XYY=; Received: from i-194-106-52-83.freedom2surf.net ([194.106.52.83]:36918 helo=pn.abelian.org) by porthos.netcom.co.uk with esmtpsa (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.88) (envelope-from ) id 1cf8uA-0004VE-7j for rsgb_lf_group@blacksheep.org; Sat, 18 Feb 2017 17:34:42 +0000 Received: from [127.0.0.1] (localhost [127.0.0.1]) by pn.abelian.org (Postfix) with ESMTP id A01D84002D1 for ; Sat, 18 Feb 2017 17:34:41 +0000 (UTC) To: rsgb_lf_group@blacksheep.org References: <15a523c6252-59e0-1118f@webprd-m14.mail.aol.com> From: Paul Nicholson Message-ID: <6c779546-7bb7-60fb-8782-7fd9e7662701@abelian.org> Date: Sat, 18 Feb 2017 17:34:41 +0000 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.5.1 MIME-Version: 1.0 In-Reply-To: <15a523c6252-59e0-1118f@webprd-m14.mail.aol.com> X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - porthos.netcom.co.uk X-AntiAbuse: Original Domain - blacksheep.org X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - abelian.org X-Get-Message-Sender-Via: porthos.netcom.co.uk: authenticated_id: catchall@abelian.org X-Authenticated-Sender: porthos.netcom.co.uk: catchall@abelian.org X-Scan-Signature: 59677119386dcf9f1872cb454dc1331d Subject: Re: VLF: EbNaut also on 8270.033333 Hz Content-Type: text/plain; charset=utf-8; format=flowed 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 2.75 Status: RO X-Status: A X-Keywords: X-UID: 10629 Yes, the whistlers are amplified in the magnetosphere by wave particle interaction. The whistler wave steals energy from electrons in the plasma, which then precipitate down onto the ionosphere. With careful monitoring of the phase of distant VLF transmitters (suitably located), these precipitations can be seen as a small rapid SID. Bielefeld is, as usual, well placed for the lightning storm off the southern tip of South Africa. Receivers a little further east may do very well too. I wonder if Jacek has vtevent running? -- Paul Nicholson --