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 vBUEJ0T2014634 for ; Sat, 30 Dec 2017 15:19:01 +0100 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1eVHuP-0003q5-UO for rs_out_1@blacksheep.org; Sat, 30 Dec 2017 14:14:45 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1eVHuP-0003pw-KH for rsgb_lf_group@blacksheep.org; Sat, 30 Dec 2017 14:14:45 +0000 Received: from [217.72.171.73] (helo=porthos.netcom.co.uk) by relay1.thorcom.net with esmtps (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.89) (envelope-from ) id 1eVHuM-00081c-FT for rsgb_lf_group@blacksheep.org; Sat, 30 Dec 2017 14:14:44 +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=sbArq6MQfFs9bNrFw6na+JclNf74rzZNEAix80vhzfs=; b=Ib/S0d/t5e/dcCjBU/5un5rVQC WUzevrcmQpk8Ow/XzB6J+eqB2uZFZWF4v6KgztiWFyVoYdL9EFhoiT9J55KNfO4NZPrZbXGFKSsiq UVX3RHOcC+G3WrBpNEofZIkkJ0TJBV5ZJ7mkKh7Zm/FMaxR7CZo3liuWnUSjUSRtD1EA=; Received: from i-194-106-52-83.freedom2surf.net ([194.106.52.83]:39110 helo=pn.abelian.org) by porthos.netcom.co.uk with esmtpsa (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.89_1) (envelope-from ) id 1eVHuM-0002uz-3y for rsgb_lf_group@blacksheep.org; Sat, 30 Dec 2017 14:14:42 +0000 Received: from [127.0.0.1] (localhost [127.0.0.1]) by pn.abelian.org (Postfix) with ESMTP id 85CAF400215 for ; Sat, 30 Dec 2017 14:14:41 +0000 (UTC) To: rsgb_lf_group@blacksheep.org References: <2dbcd2a8-0109-41e4-c0ca-aada17f54de8@abelian.org> <5A2D886D.5060109@posteo.de> <5A31249C.2040307@posteo.de> <5A326AAE.7020808@posteo.de> <6b23a798-f28e-828c-bd8a-43ba8af0fb6a@abelian.org> <346e5dfe-da5f-79e9-c097-e3012a3b74bd@abelian.org> <5A344E83.3020308@posteo.de> <5A37BB18.4090806@posteo.de> <79b53aa1-0fa7-d02c-34bf-5b2e3b7bdddb@abelian.org> <5A381F2B.7000304@posteo.de> <3871624a-11dc-12b8-853c-8454840ca9ff@abelian.org> <5A398786.7000001@posteo.de> <5A398906.9000806@posteo.de> <6833b8ea-5cf8-809e-364e-a9f47e04bc44@abelian.org> <5A3D1058.2060801@posteo.de> <17640699-682a-2d4e-6c5f-8fa14d411530@abelian.org> <5A3DA439.2070503@posteo.de> <1baa9683-37de-2f96-5909-8138b10f0a8b@abelian.org> <5A43A659.9050006@posteo.de> <037a01d38031$1f453b20$5dcfb160$@comcast.net> <5A479376.2060804@posteo.de> From: Paul Nicholson Message-ID: <4ac90a6f-6a7b-5ae4-3b4a-d8cb8e153599@abelian.org> Date: Sat, 30 Dec 2017 14:14:41 +0000 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.3.0 MIME-Version: 1.0 In-Reply-To: <5A479376.2060804@posteo.de> Content-Language: en-US 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-Spam-Score: 1.3 (+) 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 the administrator of that system for details. Content preview: Stefan wrote: > A few times i thought about providing a VLF stream from Heidelberg. I would welcome additional GPS timed streams, especially if they are not close to existing receivers. [...] Content analysis details: (1.3 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- 0.0 T_DKIM_INVALID DKIM-Signature header exists but is not valid 1.3 RDNS_NONE Delivered to internal network by a host with no rDNS X-Scan-Signature: c1f72e5acb1277e013f90c915ad7ad68 Subject: Re: VLF: Finally back on the 58 km band... Content-Type: text/plain; charset=utf-8; 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=0.9 required=5.0 tests=FROM_ENDS_IN_NUMS 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 Stefan wrote: > A few times i thought about providing a VLF stream from Heidelberg. I would welcome additional GPS timed streams, especially if they are not close to existing receivers. Would particularly like to see some high latitude sites. All you need (apart from a fairly good rx) is a quad core RPi, a stereo FlatMax sound interface (not a USB dongle) - https://www.amazon.co.uk/dp/B01HBC8CJ0/ and a low cost Neo7 GPS module. Your Internet needs to be able to send continuously between 64 and 80 kbps without incurring additional bandwidth charges. My VLF stream server will maintain a loop recording of several days (currently about 20 days) to allow retrieval of signals for analysis. It will also monitor your signal for natural radio events such as whistlers and aurora. -- Paul Nicholson --