Return-Path: Received: (qmail 26401 invoked from network); 6 Jan 2005 07:44:13 -0000 Received: from unknown (HELO ptb-spamcore01.plus.net) (192.168.71.1) by ptb-mailstore01.plus.net with SMTP; 6 Jan 2005 07:44:13 -0000 Received: from mailnull by ptb-spamcore01.plus.net with spamcore-l-b (Exim 4.32; FreeBSD) id 1CmSHq-000JxV-Vk for dave@picks.force9.co.uk; Thu, 06 Jan 2005 07:42:32 +0000 Received: from [192.168.67.2] (helo=ptb-mxcore02.plus.net) by ptb-spamcore01.plus.net with esmtp (Exim 4.32; FreeBSD) id 1CmSHq-000JxS-Ri for dave@picks.force9.co.uk; Thu, 06 Jan 2005 07:42:26 +0000 Received: from post.thorcom.com ([193.82.116.20]) by ptb-mxcore02.plus.net with esmtp (Exim) id 1CmSIf-0007OB-86 for dave@picks.force9.co.uk; Thu, 06 Jan 2005 07:43:17 +0000 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1CmSI4-0000XK-Er for rs_out_1@blacksheep.org; Thu, 06 Jan 2005 07:42:40 +0000 Received: from [193.82.116.30] (helo=relay.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1CmSI4-0000XB-0j for rsgb_lf_group@blacksheep.org; Thu, 06 Jan 2005 07:42:40 +0000 Received: from mailhost.ntl.com ([212.250.162.8] helo=mta13-winn.mailhost.ntl.com) by relay.thorcom.net with esmtp (Exim 4.41) id 1CmSHy-0003qW-Si for rsgb_lf_group@blacksheep.org; Thu, 06 Jan 2005 07:42:39 +0000 Received: from aamta08-winn.mailhost.ntl.com ([212.250.162.8]) by mta13-winn.mailhost.ntl.com with ESMTP id <20050106074220.FFKL10495.mta13-winn.mailhost.ntl.com@aamta08-winn.mailhost.ntl.com> for ; Thu, 6 Jan 2005 07:42:20 +0000 Received: from captbrian ([80.1.84.13]) by aamta08-winn.mailhost.ntl.com with SMTP id <20050106074219.HKQA7419.aamta08-winn.mailhost.ntl.com@captbrian> for ; Thu, 6 Jan 2005 07:42:19 +0000 Message-ID: <002101c4f3c3$911a2ac0$0d540150@captbrian> From: "captbrian" To: rsgb_lf_group@blacksheep.org References: <009701c4f319$3a34fe60$fe79a8c0@PCVONWALTER><001301c4f358$a60eb5b0$6501a8c0@eagles> <001001c4f370$9d02a720$6507a8c0@Main> <000e01c4f3ac$6f8b2150$6501a8c0@eagles> Date: Thu, 6 Jan 2005 07:44:34 -0000 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 5.00.2615.200 X-MimeOLE: Produced By Microsoft MimeOLE V5.00.2615.200 X-SPF-Result: relay.thorcom.net: 212.250.162.8 is neither permitted nor denied by domain of ukonline.co.uk X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=failed,none Subject: LF: Re: .rapid fading Content-Type: text/plain; charset=iso-8859-1; format=flowed Content-Transfer-Encoding: 8bit X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com 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 X-Spam-Filtered: by PlusNet SpamCORE (v3.00) To be serious: I hope no-one on the list ever holds back for fear he may be too technical. The joy of this list for me is that almost everyone knows more than do I. To be not quite so serious, Long delays on radio signals were explained (but only in a novel ) by Carl Sagan long ago - but I can never locate the name of the book to re-read it. They are ' due to earth signals being detected by unmanned alien repeater-satellites left in a far out earth-orbit long ago to monitor earth creature developments. The signals are taken in then re-radiated in high power bursts to the alien base located in ...(I forget which galaxy) . Arrival back at earth surface of the high-power bursts to interfere with a continuing signal burst is just a side-effect. This only happens,of course when Earth is in a direct line between the satellite and alien galaxy base so it is not an every day event. Alien satellites having a very clever 2200 m beam, in the form of a phased array. - there is plenty of space for it Bryan G3GVB ----- Original Message ----- From: J. Allen To: Sent: Thursday, January 06, 2005 4:58 AM Subject: LF: Re: Re: DI2AG 440KHz...rapid fading > Alan, > > Unfortunately, I was discussing two diverse things, which may or may not > have explanation in Aurora. > > First, what I saw on TIL's 137 signal has to have been some kind of long > delay echo. The reason is that the phase of his MODULATION was visibly near > 80 degrees out of phase with the second signal. It shifted toward the 180 > degree mark and as it moved it had period of null. The resulting screen > display was like a classroom description of multipath QSB. The signal rose > in value and then slowly decreased in value. > > I do not know the period of Scott's sinewave modulator, but I assume that it > is something like 60 or 120 seconds. Half of even 60 is 30 seconds, and > there is nothing in the small bit of radio physics familiar to me that can > explain 30 seconds of time delay. > > I have only seen this once, and only on Scott's 137 kHz. LF signal. After > this one event, I began capturing everything I observe and erasing what I do > not feel I will use.... Even this habit is changing, as some of the things > erased so wantonly have been found to have been of value later to others. > > Second, the DI2AG QSB or fading... I have been a very active HF operator. > When Aurora rears her lovely head, I usually go out and admire her beauty. > She wears many different gowns, but always wants my undivided attention, and > so shuts off my radio in the circuit between my antenna and those of the > people with whom I wished to speak. > > When the radio goes dead, I watch Aurora wave slowly and pulse. There will > be many others in the north who are familiar with these movements. I was > asking if it is possible that the DI2AG fading could have been multipath, > caused by one signal coming via the Auroral path, and if so, it might have > been subject to a moving refractor, changing the length of the Auroral path > relative to the normal signal path. > > Imagine one path being a sky wave on a direct path and the second path being > a wave to the nearest point of the Aurora, which is not a stationary target > but one which undulates over many miles. It just happens that the > conditions were right for Aurora when the fading occurred. Again, it is bad > science to assume that Aurora has anything to do with it... It is just an > observation, and a question. > > J. > > > >