Return-Path: Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-da06.r1000.mx.aol.com (Internet Inbound) with ESMTP id 09C0E3800008D; Wed, 21 Dec 2011 10:40:22 -0500 (EST) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1RdOCr-0001UZ-Rv for rs_out_1@blacksheep.org; Wed, 21 Dec 2011 15:35:49 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1RdOCq-0001UQ-Un for rsgb_lf_group@blacksheep.org; Wed, 21 Dec 2011 15:35:48 +0000 Received: from blu0-omc1-s33.blu0.hotmail.com ([65.55.116.44]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1RdOCo-00071M-UA for rsgb_lf_group@blacksheep.org; Wed, 21 Dec 2011 15:35:48 +0000 Received: from BLU153-W29 ([65.55.116.7]) by blu0-omc1-s33.blu0.hotmail.com with Microsoft SMTPSVC(6.0.3790.4675); Wed, 21 Dec 2011 07:35:37 -0800 Message-ID: X-Originating-IP: [138.32.32.166] From: Laurence KL7UK To: Date: Wed, 21 Dec 2011 06:35:37 -0900 Importance: Normal In-Reply-To: <4EF1EC95.4000408@iup.uni-heidelberg.de> References: <4EF1EC95.4000408@iup.uni-heidelberg.de> MIME-Version: 1.0 X-OriginalArrivalTime: 21 Dec 2011 15:35:37.0614 (UTC) FILETIME=[30105AE0:01CCBFF6] X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,HTML_MESSAGE=0.001 Content-Type: multipart/alternative; boundary="_626604a9-d870-4e75-8736-41eae5498269_" Subject: RE: LF: early transmission? X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.0 required=5.0 tests=FORGED_HOTMAIL_RCVD, HTML_MESSAGE 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: 0:2:465757120:93952408 X-AOL-SCOLL-URL_COUNT: 0 x-aol-sid: 3039ac1d404e4ef1fde51fd1 X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none --_626604a9-d870-4e75-8736-41eae5498269_ Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Stefan - the path has=2C to date=2C never opened up pre AK dawn - but I ind= icated a week or so back given the levels of HGA22 that it may be possible = - Give it a try - ill ensure it stays on LF till I get up there at midnite = local tonight. The AK snapper should flick between the 172 window and HGA 2= 2 -every 10-15 mins or so with quicker updates on the 136.172 window. =20 The opening to Eu last nite was short at 0400-0500Z and didnt get a lift pr= e Eu dawn so it didnt get any better - the Proton numbers keep on going up= and down and with other higher modal paths (see explanation/propagation fo= recast on the excellent G3NYK web site) being open is causing very deep fa= des on the multi multi hop. Dang Protons. =20 Ive built a 50 ohm in and out 10 pole BPF for 100-200kHz which appears pret= ty good and will be shoving that in a switchable line so I can improve the = R75 noise figure by using a new LNA. Ive a new MW bcast station a couple of= miles away and together with blow torches on 550 650 700 750khz is produc= ing unwanteds' - hopefully this will knock it off as I should be in the -65= /70 region at 550kHz with the filter. Snow static has been an issue too as = the weather up there has been a little "mixed". I did a flat bandpass so I = can check out Lowfers as well at 185Khz as well but still a steep rising sk= irt. Design modified/stolen from YU1LMs http://yu1lm.qrpradio.com/BP-LP%20= filters%20for%20LF%20%20and%20500kHz.pdf 100-200 BPF=2C but Im using WIMA c= aps and binoculars type 43 material for the inductors which improves the lo= ss figures it appears according to my AIM 4170. =20 See you from Alaska Laurence KL7UK mobile. =20 ? >=20 > Laurence=2C LF=2C >=20 > I see it is still dark in AK and almost dark here. Do you think it may=20 > be possible to reach AK just before YOUR dawn and my sunset? >=20 > I will try and go into the air now! >=20 > 73=2C Stefan >=20 = --_626604a9-d870-4e75-8736-41eae5498269_ Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Stefan - the path has=2C to date=2C never opened up pre AK dawn - but I ind= icated a week or so back given the levels of HGA22 that it may<= /EM> be possible - Give it a try - ill ensure it stays on LF till = I get up there at midnite local tonight. The AK snapper should flick betwee= n the 172 window and HGA 22 -every 10-15 mins or so with quicker updates on= the 136.172 window.
 =3B
The opening to Eu last nite was short =3Bat 0400-0500Z and didnt get a = lift pre =3BEu dawn so it didnt get any better  =3B- the Proton num= bers keep on going up and down and =3Bwith other higher modal paths (se= e explanation/propagation forecast =3Bon the excellent G3NYK web site) =  =3Bbeing open is causing very =3Bdeep fades on the multi multi hop= . Dang Protons.
 =3B
Ive built a 50 ohm =3Bin and out =3B10 pole BPF for 100-200kHz whic= h appears pretty good and will be shoving that in a switchable line so I ca= n improve the R75 noise figure by using a new LNA. =3BIve a new MW bcas= t station a couple of miles away and together with blow torches on 550 650 = 700 750khz  =3Bis producing unwanteds' - hopefully this will knock it o= ff as I should be in the -65/70 region at 550kHz with the filter. Snow stat= ic has been an issue too as the weather up there has been a little "mixed".= I did a flat bandpass so I can check out Lowfers as well at 185Khz as well= but still a steep rising skirt. Design modified/stolen from YU1LMs =3B= http://yu1lm.qrpradio.com/BP-LP%20filters%20for%20LF%20%20and%= 20500kHz.pdf =3B100-200 BPF=2C but Im using WIMA caps and binocular= s type 43 material for the inductors which improves the loss figures it app= ears according to my AIM 4170.
 =3B
See you from Alaska

Laurence KL7UK mobile.
 =3B
?
>=3B
>=3B Laurence=2C LF=2C
>=3B
>=3B I see it is s= till dark in AK and almost dark here. Do you think it may
>=3B be pos= sible to reach AK just before YOUR dawn and my sunset?
>=3B
>=3B= I will try and go into the air now!
>=3B
>=3B 73=2C Stefan
&= gt=3B

= --_626604a9-d870-4e75-8736-41eae5498269_--