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 v99D9dUU023369 for ; Mon, 9 Oct 2017 15:09:40 +0200 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1e1XgP-0002Z8-0R for rs_out_1@blacksheep.org; Mon, 09 Oct 2017 14:01:21 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1e1XgN-0002Yz-TC for rsgb_lf_group@blacksheep.org; Mon, 09 Oct 2017 14:01:19 +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 4.89) (envelope-from ) id 1e1XgH-0003NC-Ae for rsgb_lf_group@blacksheep.org; Mon, 09 Oct 2017 14:01:18 +0100 Received: from submission (posteo.de [89.146.220.130]) by mout02.posteo.de (Postfix) with ESMTPS id 94AA520C0F for ; Mon, 9 Oct 2017 15:01:05 +0200 (CEST) Received: from customer (localhost [127.0.0.1]) by submission (posteo.de) with ESMTPSA id 3y9gNK026bz10HC for ; Mon, 9 Oct 2017 15:01:01 +0200 (CEST) Message-ID: <59DB730D.4080803@posteo.de> Date: Mon, 09 Oct 2017 15:01:01 +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: <15ec7c794b3-bff-66@webjas-vac136.srv.aolmail.net> <59D2BD65.4080909@posteo.de> <59D4B109.27652.1415B4FA@mike.dennison.ntlworld.com> <7737095b-edc9-8b5f-ebf5-2a6b2884d425@abelian.org> <59D7940D.7080102@posteo.de> <59DA4E78.7020804@posteo.de> <25d84b3d-2077-a3dc-426c-3f9b92940205@abelian.org> In-Reply-To: <25d84b3d-2077-a3dc-426c-3f9b92940205@abelian.org> X-Spam-Score: -0.0 (/) 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: Hello Paul, VLF, An excellent result! Couldn't be better. BTW i confirm the message :-) So now we managed to transfer a 100 character message on 8270 Hz and 6470 Hz, by stacking just 2 daily transmissions. The duration of the transmission on 6470 Hz was even shorter, and the ERP was 2.1 dB lower but the Eb/N0 was higher :-) [...] Content analysis details: (-0.0 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RP_MATCHES_RCVD Envelope sender domain matches handover relay domain X-Scan-Signature: 5f132ffce194fb93f2267a462d849f2b Subject: Re: VLF: 300 mA on 6470 Hz 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=0.0 required=5.0 tests=none 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 Hello Paul, VLF, An excellent result! Couldn't be better. BTW i confirm the message :-) So now we managed to transfer a 100 character message on 8270 Hz and 6470 Hz, by stacking just 2 daily transmissions. The duration of the transmission on 6470 Hz was even shorter, and the ERP was 2.1 dB lower but the Eb/N0 was higher :-) On 5170 Hz the ERP will be another 2 dB lower. With 300 mA it will be the strongest signal that i radiated from this antenna on this frequency, 2.5 dB stronger than last year. So far we managed 20 characters in 3 days. So maybe 100 characters can be done in 7 days. It's getting harder! The experiments on 6470 Hz will still take some time, so no problem that your E field is not available at present. 73, Stefan Am 08.10.2017 20:57, schrieb Paul Nicholson: > > Stefan wrote: > > > f = 6470.1000 Hz > > Start time: 07.October.2017 06:00:05 UTC (daily) > > Symbol period: 7 s > > Characters: 100 > > CRC bits: 8 > > Coding 8K21A > > Copied > > "HEY PAUL, THAT WORKED WELL AGAIN! LET US TRY 5170 HZ SOON. > GOOD LUCK. 73 FROM HEIDELBERG DE DK7FC..." > > Eb/N0 = -0.4 dB, BER 31.1%, phase -109.0, constant reference. > > Each day: > > 7th: Eb/N0 = -3.6 dB phase -106.9 > 8th: Eb/N0 = -3.2 dB phase -110.9 > > Received with combined H-field and E-field. From tomorrow, > E-field will not be usable. > > -- > Paul Nicholson > -- >