Return-Path: X-Spam-DCC: paranoid 1102; 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=-1.0 required=5.0 tests=BAYES_00,DNS_FROM_AHBL_RHSBL, FORGED_RCVD_HELO,SPF_PASS,SUBJ_RE_NUM 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 u51Ahp42021565 for ; Wed, 1 Jun 2016 12:43:52 +0200 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1b83YJ-000489-FG for rs_out_1@blacksheep.org; Wed, 01 Jun 2016 11:39:07 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1b83YJ-000480-5U for rsgb_lf_group@blacksheep.org; Wed, 01 Jun 2016 11:39:07 +0100 Received: from smarthost03a.mail.zen.net.uk ([212.23.1.20]) by relay1.thorcom.net with esmtp (Exim 4.87) (envelope-from ) id 1b83YH-0002ES-H1 for rsgb_lf_group@blacksheep.org; Wed, 01 Jun 2016 11:39:06 +0100 Received: from [82.70.254.222] (helo=OfficeWin7.lan) by smarthost03a.mail.zen.net.uk with esmtp (Exim 4.80) (envelope-from ) id 1b83YG-0008Fi-MZ for rsgb_lf_group@blacksheep.org; Wed, 01 Jun 2016 10:39:04 +0000 Date: Wed, 1 Jun 2016 11:39:04 +0100 From: Chris Wilson Organization: Gatesgarth Developments X-Priority: 3 (Normal) Message-ID: <1876951388.20160601113904@chriswilson.tv> To: DK7FC In-Reply-To: <574EAE10.3070903@posteo.de> References: <1685128417.20160531153441@chriswilson.tv> <1550afb17cc-67dd-e0ec@webprd-m47.mail.aol.com> <574EAE10.3070903@posteo.de> MIME-Version: 1.0 X-Originating-smarthost03a-IP: [82.70.254.222] X-Scan-Signature: 4e3b1488273adbbe9757d6bdd5adf219 Subject: Re[2]: LF: Earth modes and ebnaut? Content-Type: text/plain; charset=us-ascii 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 2.56 on 10.1.3.11 Status: O X-Status: X-Keywords: X-UID: 8200 Hello DK7FC, Wednesday, June 1, 2016 Thanks for the reply G4WGT is just over 50 miles away as the crow flies. What's my best way to generate a very very stable carrier at VLF? I have a 10 MHz and 1PPS Trimble Thunderbolt GPS box operating 24 hours, 7 days a week, with 10MHz, 5MHz, 1Mhz, and from 100kHz to 1Hz in decades, from a professionally made divider box. Can that be incorporated? http://www.perdrix.co.uk/FrequencyDivider/index.html Best regards, Chris 2E0ILY mailto:chris@chriswilson.tv > > Sounds interesting. I've managed about 50km with 250W and a 700m > long wire. But that was in 3.8 mHz, which is fast mode for VLF. But > it was one of the standard modes these days :-) > Before TXing EbNaut i would suggest to experiment just with a > stable carrier and detect it in some distance. Generating an > absolutely stable carrier is the first step and essential for all EbNaut experiments following. > The G4WGT VLF grabber may be helpful but i don't know the distances between you... > Nice to see some starting activity. > I have to repair (and improve) the preamp for my VLF remote > grabber, thus the limited performance in the moment. > > 73, Stefan