To: | [email protected] |
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Subject: | Re: VLF: A 300 char message? |
From: | Markus Vester <[email protected]> |
Date: | Tue, 14 Nov 2017 07:30:52 -0500 |
Dkim-signature: | v=1; a=rsa-sha256; c=relaxed/relaxed; d=mx.aol.com; s=20150623; t=1510662653; bh=9n7SbNgduHDGp9L3n4DFIT+J76IjyERjygck87XB7IE=; h=From:To:Subject:Message-Id:Date:MIME-Version:Content-Type; b=cmVzY5Xv/5YyoVpDrqqCEsRUdZa7iu+RP4VXoqKeo4N1nIF3Hu11Ha22Qn4j09j7f TtR45gOlJpC5bgbXR+y44bRbd9aoFfbT4KEedjx6CB1zNRFsd6yk9x0jDq0gRnDPEx PEW6eDoSEA1toWLosZhOlUr22mFGCr5WfPnGFClk= |
In-reply-to: | <[email protected]> |
Reply-to: | [email protected] |
Sender: | [email protected] |
Hi Paul, Stefan, this is an impressive result! I want to correlate the message against DL0AO and DF6NM data to see how close we may have got. However copying the result from your email produced only for 298 characters between the quotes - maybe something has been lost in email formatting? Best 73, Markus (DF6NM) -----Ursprüngliche Mitteilung----- Von: Paul Nicholson <[email protected]> An: rsgb_lf_group <[email protected]> Verschickt: Di, 14. Nov 2017 12:06 Betreff: Re: VLF: A 300 char message? Stefan wrote: > f = 8270.1000 Hz > Start time: 11.November.2017 17:00:00 UTC > Symbol period: 6 s > Characters: 300 > CRC bits: 16 > Coding 4K19A > Duration: 12:13:36h > message start delayed by 15 minutes... Copied "HELLO PAUL AND THE REST OF THE LF GROUP! WELL, THIS IS THE NEW LONGEST MESSAGE TRANSMITTED ON VLF. THANKS TO ALL STATIONS WHO PARTICIPATE IN THE EXPERIMENTS SINCE 2010! VLF IS A GREAT REAGION IN THE RF SPECTRUM. WHO KNOWS WHAT WE WILL DEVELOP AND DISCOVER IN THE NEXT TIME :-D 73 DE DK7FC IN JN49IK" using combined 12th/13th and 13th/14th. Constant reference phase, Eb/N0 = +1.7 dB, BER 21.4%, list rank 0 S/N -12.40 dB in 1Hz, -46.38 dB in 2.5kHz. Each night: 11th/12th Eb/N0 = -4.4 dB, phase 101.5 deg, -18.50 dB in 1Hz; 12th/13th Eb/N0 = -2.0 dB, phase 92.5 deg, -16.07 dB in 1Hz; 13th/14th Eb/N0 = -0.6 dB, phase 100.6 deg, -14.73 dB in 1Hz; Combinations 11/12 + 12/13: -0.1 dB (no decode up to 6E6 list); 12/13 + 13/14: +1.7 dB (decodes BER 21.4% rank 0); 11/12 + 13/14: +0.7 dB (decodes BER 22.6% rank 82); All three: +2.6 dB; -- Paul Nicholson -- |
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