Return-Path: Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-dk02.r1000.mx.aol.com (Internet Inbound) with ESMTP id 617CF38000087; Thu, 10 Nov 2011 06:48:20 -0500 (EST) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1ROT4O-0003sr-Ig for rs_out_1@blacksheep.org; Thu, 10 Nov 2011 11:45:24 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1ROT4O-0003si-3y for rsgb_lf_group@blacksheep.org; Thu, 10 Nov 2011 11:45:24 +0000 Received: from outbound-queue-1.mail.thdo.gradwell.net ([212.11.70.34]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1ROT4H-0001vr-MJ for rsgb_lf_group@blacksheep.org; Thu, 10 Nov 2011 11:45:24 +0000 Received: from outbound-edge-2.mail.thdo.gradwell.net (bonnie.gradwell.net [212.11.70.2]) by outbound-queue-1.mail.thdo.gradwell.net (Postfix) with ESMTP id 56CCB21F6B for ; Thu, 10 Nov 2011 11:45:03 +0000 (GMT) Received: from ctuash.plus.com (HELO Hugh) (212.159.90.113) (smtp-auth username ashford, mechanism login) by outbound-edge-2.mail.thdo.gradwell.net (qpsmtpd/0.83) with ESMTPA; Thu, 10 Nov 2011 11:45:02 +0000 Message-ID: <1691D5155DE74DC890ED2057D783E6E1@Hugh> From: "Hugh_m0wye" To: References: <4EBAF991.5060509@iup.uni-heidelberg.de> <9F4DFD60F7924598906893140FFC27FA@Hugh> <4EBBA423.7060207@toya.net.pl> Date: Thu, 10 Nov 2011 11:43:36 -0000 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.5931 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.5994 X-Gradwell-MongoId: 4ebbb93f.e5-d1b-2 X-Gradwell-Auth-Method: smtpauth X-Gradwell-Auth-Credentials: ashford X-Spam-Score: 3.4 (+++) X-Spam-Report: autolearn=disabled,FORGED_MUA_OUTLOOK=3.36,HTML_MESSAGE=0.001 Subject: Re: LF: dx forecast and EUV radiation Content-Type: multipart/alternative; boundary="----=_NextPart_000_0043_01CC9F9D.FB948C00" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: ** X-Spam-Status: No, hits=2.9 required=5.0 tests=FORGED_MUA_OUTLOOK,HTML_30_40, HTML_MESSAGE,HTML_TITLE_EMPTY 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: 0:2:499447008:93952408 X-AOL-SCOLL-URL_COUNT: 0 x-aol-sid: 3039ac1db4064ebbba037524 X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none This is a multi-part message in MIME format. ------=_NextPart_000_0043_01CC9F9D.FB948C00 Content-Type: text/plain; charset="ISO-8859-15" Content-Transfer-Encoding: quoted-printable Thank you Piotr, That is the best collection of propagation data I have seen so far, and = I have bookmarked it. It translates quite well with Google. But i still can't see a number there which represents the level of EUV = reaching the Earth.=20 I suppose the "sunspot number" comes close, because the EUV seems mostly = to come from sunspots. Thanks and 73 Hugh ----- Original Message -----=20 From: Piotr Mlynarski=20 To: rsgb_lf_group@blacksheep.org=20 Sent: Thursday, November 10, 2011 10:14 AM Subject: Re: LF: dx forecast and EUV radiation W dniu 2011-11-10 10:54, Hugh_m0wye pisze:=20 Hello group, I was re-reading the chapter on propagation in an RSGB book on = Operating Practice, and it said that the ionisation of our precious F = layers (and also the D absorbtion layer) was caused by Extreme UV = radiation. This is wavelengths 120nm up to 10nm.=20 We monitor the solar wind and solar flares to try and predict what = changes in propagation will occur, but these things seem mainly to be = negative influences on propagation - things which disrupt the = propagation. It would be nice to monitor the EUV levels from the Sun as well... so my question is really "does anyone know of a source of Internet = data for this radiation?" Hello Hugh, perhaps, the link below could be of some interest to you http://cfivarese.altervista.org/SI_Macchie_solari_real_time.html 73, Piotr, sq7mpj ------=_NextPart_000_0043_01CC9F9D.FB948C00 Content-Type: text/html; charset="ISO-8859-15" Content-Transfer-Encoding: quoted-printable
Thank you Piotr,
That is the best collection of propagation = data I have=20 seen so far, and I have bookmarked it.
It translates quite well with = Google.
But i still can't see a number there which = represents=20 the level of EUV reaching the Earth.
I suppose the "sunspot number" comes close, = because the=20 EUV seems mostly to come from sunspots.
Thanks and 73
Hugh
----- Original Message -----
From:=20 Piotr = Mlynarski
Sent: Thursday, November 10, = 2011 10:14=20 AM
Subject: Re: LF: dx forecast = and EUV=20 radiation

W dniu 2011-11-10 10:54, Hugh_m0wye pisze:=20
Hello group,
I was re-reading the chapter on = propagation in an=20 RSGB book on Operating Practice, and it said that the ionisation of = our=20 precious F layers (and also the D absorbtion layer) was caused by = Extreme UV=20 radiation. This is wavelengths 120nm up to 10nm.
 
We monitor the solar wind and solar flares = to try=20 and predict what changes in propagation will occur, but these things = seem=20 mainly to be negative influences on propagation - things which = disrupt the=20 propagation.
 
It would be nice to monitor the EUV levels = from the=20 Sun as well...
 so my question is really "does = anyone know of=20 a source of Internet data for this=20 radiation?"



Hello = Hugh,

perhaps,=20 the link below   could  be of some interest to you

http://cfivarese.altervista.org/SI_Macchie_solari_real_time.html
=
           &nb= sp;           &nbs= p;            = ;          =20 73, Piotr, sq7mpj

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