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 vBPBFBfn023297 for ; Mon, 25 Dec 2017 12:15:12 +0100 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1eTQfO-0007WM-13 for rs_out_1@blacksheep.org; Mon, 25 Dec 2017 11:11:34 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1eTQfN-0007WC-Kb for rsgb_lf_group@blacksheep.org; Mon, 25 Dec 2017 11:11:33 +0000 Received: from mail-qt0-x22e.google.com ([2607:f8b0:400d:c0d::22e]) by relay1.thorcom.net with esmtps (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.89) (envelope-from <9h9mhrlaw@gmail.com>) id 1eTQfK-0000PZ-JW for rsgb_lf_group@blacksheep.org; Mon, 25 Dec 2017 11:11:32 +0000 Received: by mail-qt0-x22e.google.com with SMTP id u10so42681730qtg.2 for ; Mon, 25 Dec 2017 03:11:30 -0800 (PST) X-DKIM-Result: Domain=gmail.com Result=Good and Known Domain DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:in-reply-to:references:from:date:message-id:subject:to; bh=SDeMYVtjH/AHEEj/mGJeod5eqNshkIsMjdfkAvWtpXg=; b=RRPJNP92GED3g67vUJ9YnbeFOw0d2HAAypm/kp9fpSbSlzeBU8F/Wr2EDpLtfUn81M X/Rqj+zZvaClaHegczjJWQIinNuSRKk5S8WpocneQmK2DCMdCqvFXqItfQXSJSni4fYJ kHUaNlCZ0fUyHfYvkVC+3mP3q+/xrnCcVgpr/mzTtqeRmAamAtiERYah4vPwywvx0Dnk 4UlLeKl9fTZJUvYeicJZ72e+mAPu3qSFUNVO8vDwXL3ud5sFcxQrgSw1w623z5t9DbxH FyTAEZAn1w6jOzVLvMa1YzQ1dhq2O6OI8NTQEaknQrQ+FcdbWE2Zkk9altXnUbPoOGco KZ4w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:in-reply-to:references:from:date :message-id:subject:to; bh=SDeMYVtjH/AHEEj/mGJeod5eqNshkIsMjdfkAvWtpXg=; b=f42/9CNMY8GkGDroTCsEyIw88NlXZnCCvd36rGZkRMb+da/9jSjHitEgR0XiCjhOQZ h5LW/p4exz9sXGPog1Snkf/UVwAPWQC4MJ45qxwgouuqMH1z7wQKwgmYyeSyrIzH6pqN xS9gH6KUmCF0+ja/BAewO9wdIFhKRjaZPth1YnVxdtoZVvze4BWuHenko9plqLs6HNIq zKDLiRwJ/SrEoM6ObbMbmZLqxTgOZrqQOG6RclVR03EGuIHDkeXj8vpisZ78Oh7BDPF/ gQdkCaigmLXxwF8/hhIQpobH+yOfZJ+/MVkTSG+vdB9/Z648K1TteSDD8oJNfZeBfWbU J44g== X-Gm-Message-State: AKGB3mK/2x9m7PSuLVpniUvCobgshi8sQofXBBlLwYg8YAfEhbJWrXcJ PA5VTp1Wt8YC6RuK9Gv+y7SIi6Vn8cd2YYfFU6w= X-Google-Smtp-Source: ACJfBosDT9mHzQ5iQg1ztHXduxgE2/qiiZqwKXm3EM46L4YJtcABYfIpav1yaY7h3fus27p6LhZZy4jvcjDyY6Cceo4= X-Received: by 10.200.54.236 with SMTP id b41mr20905343qtc.280.1514200288979; Mon, 25 Dec 2017 03:11:28 -0800 (PST) MIME-Version: 1.0 Received: by 10.237.58.102 with HTTP; Mon, 25 Dec 2017 03:11:28 -0800 (PST) In-Reply-To: References: <1608d13101f-1d34-8b@webjas-vad016.srv.aolmail.net> From: Lawrence Galea <9h9mhrlaw@gmail.com> Date: Mon, 25 Dec 2017 12:11:28 +0100 Message-ID: To: rsgb_lf_group@blacksheep.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: Merry Christmas and a Happy New Year to all from Lawrence 9H1AV On 12/25/17, Paul Nicholson wrote: > > > another big step since New Year 2015. > > We can always count on Dex to try to push the limits out > further. > > Last night the noise was low, so low that the best S/N > was bearing 290. Dex on 284.6. Usually the S/N > peaks up by aiming off at 310 to 330. > > It was also the first time I used the new antenna > calibrations to mix the signal for a decode. > > We used 8269 to avoid any overlap with VO1NA. > > Given those conditions, we could have tried 42 chars, > 16K25A CRC16 with 7 second symbols 23:00 to 08:05:04, > for Eb/N0 -0.15. > > Correlations from on-line receivers (a loss of > perhaps 1 to 2dB due to vorbis encoding): > > Bielefeld 6918 km, Eb/N0 -12.3 dB; > Cumiana 7173 km, Eb/N0 -10.0 dB; > Warsaw 7681 km, Eb/N0 -19.7 dB; > Forest VA 254 km, Eb/N0 -1.2 dB *Decoded* rank 0; > Hawley TX 1816 km, Eb/N0 -7.7 dB; > > The low Eb/N0 at Forest is surprising. Something is wrong, > should be a huge signal. In 2015 Dex's EbNaut was even > visible on a spectrogram at Forest. > > What do normal people do on Christmas day morning? I was > out at the H rx site with a spectrum analyser looking at > the amplitude of some MF signals (909kHz 5mV RMS on the > open circuit loop). > > Meanwhile, I'm running low on celebratory cigars! > > -- > Paul Nicholson > -- > > [...] Content analysis details: (0.0 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- 0.0 FREEMAIL_FROM Sender email is commonly abused enduser mail provider (9h9mhrlaw[at]gmail.com) 0.0 T_DKIM_INVALID DKIM-Signature header exists but is not valid X-Scan-Signature: 4b5b5ebe37a4c4f430f59bc35c1947b0 Subject: Re: VLF: A message from W4DEX Content-Type: text/plain; charset="UTF-8" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: * X-Spam-Status: No, hits=1.4 required=5.0 tests=FROM_HAS_MIXED_NUMS, MAILTO_TO_SPAM_ADDR 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 Merry Christmas and a Happy New Year to all from Lawrence 9H1AV On 12/25/17, Paul Nicholson wrote: > > > another big step since New Year 2015. > > We can always count on Dex to try to push the limits out > further. > > Last night the noise was low, so low that the best S/N > was bearing 290. Dex on 284.6. Usually the S/N > peaks up by aiming off at 310 to 330. > > It was also the first time I used the new antenna > calibrations to mix the signal for a decode. > > We used 8269 to avoid any overlap with VO1NA. > > Given those conditions, we could have tried 42 chars, > 16K25A CRC16 with 7 second symbols 23:00 to 08:05:04, > for Eb/N0 -0.15. > > Correlations from on-line receivers (a loss of > perhaps 1 to 2dB due to vorbis encoding): > > Bielefeld 6918 km, Eb/N0 -12.3 dB; > Cumiana 7173 km, Eb/N0 -10.0 dB; > Warsaw 7681 km, Eb/N0 -19.7 dB; > Forest VA 254 km, Eb/N0 -1.2 dB *Decoded* rank 0; > Hawley TX 1816 km, Eb/N0 -7.7 dB; > > The low Eb/N0 at Forest is surprising. Something is wrong, > should be a huge signal. In 2015 Dex's EbNaut was even > visible on a spectrogram at Forest. > > What do normal people do on Christmas day morning? I was > out at the H rx site with a spectrum analyser looking at > the amplitude of some MF signals (909kHz 5mV RMS on the > open circuit loop). > > Meanwhile, I'm running low on celebratory cigars! > > -- > Paul Nicholson > -- > >