Return-Path: Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-dl01.r1000.mx.aol.com (Internet Inbound) with ESMTP id 2CFA838000085; Fri, 23 Mar 2012 20:02:20 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1SBEPy-0003NH-2K for rs_out_1@blacksheep.org; Sat, 24 Mar 2012 00:01:14 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1SBEPx-0003N8-JC for rsgb_lf_group@blacksheep.org; Sat, 24 Mar 2012 00:01:13 +0000 Received: from imr-db02.mx.aol.com ([205.188.91.96]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1SBEPt-0004UU-Dv for rsgb_lf_group@blacksheep.org; Sat, 24 Mar 2012 00:01:13 +0000 Received: from mtaout-mb06.r1000.mx.aol.com (mtaout-mb06.r1000.mx.aol.com [172.29.41.70]) by imr-db02.mx.aol.com (8.14.1/8.14.1) with ESMTP id q2O011sC017110 for ; Fri, 23 Mar 2012 20:01:01 -0400 Received: from White (nrbg-4d057abd.pool.mediaWays.net [77.5.122.189]) by mtaout-mb06.r1000.mx.aol.com (MUA/Third Party Client Interface) with ESMTPA id F3FACE000888 for ; Fri, 23 Mar 2012 20:01:00 -0400 (EDT) Message-ID: From: "Markus Vester" To: References: <4F6B09A4.9030705@talktalk.net> <52679836C1244DF48CA5B3153203BBC7@acer> <4F6C390F.6050908@talktalk.net> <8712DA76BC9C47AA904F2DCFB205D411@acer> <4F6C57EE.2010508@talktalk.net> <409A0A913F1148C5B8D3D94CCFC59820@Extensa> <4F6CE24F.2080906@talktalk.net> <4F6CF7DE.70800@freenet.de> Date: Sat, 24 Mar 2012 01:01:02 +0100 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal Importance: Normal X-Mailer: Microsoft Windows Live Mail 12.0.1606 X-MIMEOLE: Produced By Microsoft MimeOLE V12.0.1606 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=mx.aol.com; s=20110426; t=1332547261; bh=oanjs2Vw5oTe2JrkRgyWyvnbULRrxwR2n3vXBLjeov4=; h=From:To:Subject:Message-ID:Date:MIME-Version:Content-Type; b=VL6mteLdu0JdPijCKvW8jqAcTCguIFqxvT62WkCimiVP4BWHVJ5Gd1Vrov3x5wxa8 GDeHb2GFtuk74TXdiHSraB+/vZjQ7vso54/kG86ReMHzAu4kCnDvMqDOOc0ZZ0fWiE JDc0BVaXUVQynm7bMqVjGhvPGF2fezMOk08Hl05M= X-AOL-SCOLL-SCORE: 1:2:394785152:93952408 X-AOL-SCOLL-URL_COUNT: 1 X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,HTML_MESSAGE=0.001 Subject: Re: LF: Now using Mini Whip here on 8970 Hz in JO33kh, Appingedam Content-Type: multipart/alternative; boundary="----=_NextPart_000_002B_01CD0959.958F7AC0" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.6 required=5.0 tests=HTML_40_50,HTML_MESSAGE, MISSING_OUTLOOK_NAME 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-aol-global-disposition: G X-AOL-SCOLL-SCORE: 1:2:442811520:93952408 X-AOL-SCOLL-URL_COUNT: 1 X-AOL-SCOLL-AUTHENTICATION: mail_rly_antispam_dkim-d023.2 ; domain : mx.aol.com DKIM : pass x-aol-sid: 3039ac1d4acf4f6d0f0c68aa X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none Dies ist eine mehrteilige Nachricht im MIME-Format. ------=_NextPart_000_002B_01CD0959.958F7AC0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Peter, oh yes, propagational effects are also present on 9 kHz. Sunrise and = sunset produce rapid changes or dips. There is also a slower diurnal = pattern during the day, depending on the phasing between groundwave vs = ionospheric components and thus on distance. According to several = observations, there seems to be a midday maximum at about 400 km, but a = minimum at 200 km.=20 In the lower kHz range (3 to 14 kHz), there are sometimes remarkable = selective fading effects impressed on the QRN spectrum, for example on = Hald=F3r's wideband spectrograms http://simnet.is/halldorgudmunds/TF3HZ_VLFgrabber/ This effect seems to be most prominent when tropospheric QRN sources are = more or less localized in a small region, so most of the spherics are at = similar distance.=20 Best 73, Markus (DF6NM) From: PA1SDB, Peter=20 Sent: Saturday, March 24, 2012 12:39 AM To: rsgb_lf_group@blacksheep.org=20 Subject: Re: LF: Now using Mini Whip here on 8970 Hz in JO33kh, = Appingedam Hi Hi. I started listening on VLF because I did build a SID detector. http://home.deds.nl/~knol/blog.htm Allmost at the same time like Andy, G7IZU at = http://www.tvcomm.co.uk/radio/vlf.html Later on we meet. We learned about programming SL. as a SID detector. In advice of you, I will QSY to GQD on 22.1. Its also strong here as you = can see in the spectrum overview here: http://home.deds.nl/~knol/sid.jpg I wonder is SID's does have effect on 9 Khz signals. Does sunset and sunruse have also effect on 9 Khz signals like it has = ons the signals between 19 and 24 Khz ? Learning day by day !=20 73's Peter - PA1SDB' ------=_NextPart_000_002B_01CD0959.958F7AC0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Peter,
 
oh yes, propagational effects are also = present on 9=20 kHz. Sunrise and sunset produce rapid changes or dips. There = is also a=20 slower diurnal pattern during the day, depending on = the phasing=20 between groundwave vs ionospheric components and thus on=20 distance. According to several observations, there seems to = be a=20 midday maximum at about 400 km, but a minimum at 200 = km. 
 
In the lower kHz range (3 to 14 = kHz), there=20 are sometimes remarkable selective fading effects impressed=20 on the QRN spectrum, for example on Hald=F3r's wideband=20 spectrograms
http://simnet= .is/halldorgudmunds/TF3HZ_VLFgrabber/
This effect seems to be most prominent = when=20 tropospheric QRN sources are more or less localized in a small = region,=20 so most of the spherics are at similar distance. 
 
Best = 73,
Markus = (DF6NM)

Sent: Saturday, March 24, 2012 12:39 AM
To: rsgb_lf_group@blacksheep.org= =20
Subject: Re: LF: Now using Mini Whip here on 8970 Hz in = JO33kh,=20 Appingedam

Hi Hi.
I started listening on VLF because I did build = a SID=20 detector.
http://home.deds.nl/~knol/blo= g.htm
 
Allmost at the same time like Andy, = G7IZU at http://www.tvcomm.co.uk/r= adio/vlf.html
Later on we meet. We learned about = programming  SL.=20 as a SID detector.
 
In advice of you, I will QSY to GQD on 22.1. = Its also=20 strong here as you can see in the spectrum overview here:
http://home.deds.nl/~knol/sid.= jpg
 
 
I wonder is SID's does have effect on 9 Khz=20 signals.
Does sunset and sunruse have also effect on 9 = Khz=20 signals like it has ons the signals between 19 and 24 Khz ?
 
Learning day by day !
 
73's Peter - PA1SDB'
 
------=_NextPart_000_002B_01CD0959.958F7AC0--