Return-Path: Received: from rly-mg01.mx.aol.com (rly-mg01.mail.aol.com [172.20.83.107]) by air-mg08.mail.aol.com (v121.4) with ESMTP id MAILINMG082-9f247985ba038e; Thu, 24 Jan 2008 04:34:46 -0500 Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by rly-mg01.mx.aol.com (v121.4) with ESMTP id MAILRELAYINMG014-9f247985ba038e; Thu, 24 Jan 2008 04:34:26 -0500 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1JHyT3-00055L-9H for rs_out_1@blacksheep.org; Thu, 24 Jan 2008 09:33:53 +0000 Received: from [193.82.116.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1JHyT2-00055C-Dp for rsgb_lf_group@blacksheep.org; Thu, 24 Jan 2008 09:33:52 +0000 Received: from mta01.xtra.co.nz ([210.54.141.254]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1JHySx-0005w8-Hb for rsgb_lf_group@blacksheep.org; Thu, 24 Jan 2008 09:33:52 +0000 Received: from fep04.xtra.co.nz ([172.23.12.41]) by mta01.xtra.co.nz with ESMTP id <20080124093317.BFIH6316.mta01.xtra.co.nz@fep04.xtra.co.nz> for ; Thu, 24 Jan 2008 22:33:17 +1300 Received: from SN2941077064 ([210.54.113.4]) by fep04.xtra.co.nz with SMTP id <20080124093316.KUHZ17371.fep04.xtra.co.nz@SN2941077064> for ; Thu, 24 Jan 2008 22:33:16 +1300 Message-ID: <003c01c85e6c$228416e0$047136d2@SN2941077064> From: "gboorerzl3pn" To: Date: Thu, 24 Jan 2008 22:33:09 +1300 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.3138 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.3198 X-Karma: 0: X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,HTML_MESSAGE=0.001 Subject: LF: propagation on lf Content-Type: multipart/alternative; boundary="----=_NextPart_000_0039_01C85ED9.18856A50" 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=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-IP: 193.82.116.20 X-AOL-SCOLL-AUTHENTICATION: listenair ; SPF_helo : n X-AOL-SCOLL-AUTHENTICATION: listenair ; SPF_822_from : n ------=_NextPart_000_0039_01C85ED9.18856A50 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Propagation can be so different and a bit confusing on lf untill you get the= hang of it...180khz odd there is a constant battle between groundwave and s= kywave after sunset ..when the sky wave is in phase or additive to ground w= ave sigs can be really good...skywave out of phase can and does completly ca= ncel sigs and zero copy..the process in zl the phase cycle can vary from 5 t= o 20mins...clasic path between timaru and wellington northisland sigs up the= coast during daylight are constant and usable ssb and cw real time morse t= hat is..inland hams located central otago here no ground wave on lf from wel= lington..but come sunset and the reflective layers are working on 180khz in= comes good signals..but on sea coast sigs either come stong or disappear al= together from wellington...luck of the dice all interesting fun though .= ..whose got an antennae that can split sky wave from ground wave ?? geo= rge zl3pn 73s ------=_NextPart_000_0039_01C85ED9.18856A50 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

Propagation can be so different and a bit c= onfusing=20 on lf untill you get the hang of it...180khz odd there is a constant battle=20 between groundwave and skywave after sunset ..when the sky wave is in=20 phase or additive to ground wave sigs can be really good...skywave out of ph= ase=20 can and does completly cancel sigs and zero copy..the process in zl the phas= e=20 cycle can vary from 5 to 20mins...clasic path between timaru and wellington=20 northisland sigs up the coast during daylight are constant and usable ssb an= d=20 cw real time morse that is..inland hams located central otago here no=20 ground wave on lf from wellington..but come sunset and the reflective layers= are=20 working on 180khz in comes good signals..but on sea coast sigs either=20= come=20 stong or disappear altogether from wellington...luck of the=20 dice all interesting fun though ...whose got an ante= nnae=20 that can split sky wave from ground wave ?? ge= orge=20 zl3pn 73s

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