Return-Path: Received: from mtain-de06.r1000.mx.aol.com (mtain-de06.r1000.mx.aol.com [172.29.64.206]) by air-md09.mail.aol.com (v129.4) with ESMTP id MAILINMD094-8b974c1246d61ba; Fri, 11 Jun 2010 10:23:18 -0400 Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by mtain-de06.r1000.mx.aol.com (Internet Inbound) with ESMTP id 5198F380002C5; Fri, 11 Jun 2010 10:23:15 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1ON57N-0006Gy-3Q for rs_out_1@blacksheep.org; Fri, 11 Jun 2010 15:21:57 +0100 Received: from [193.82.116.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1ON57M-0006Gp-Mx for rsgb_lf_group@blacksheep.org; Fri, 11 Jun 2010 15:21:56 +0100 Received: from blu0-omc1-s3.blu0.hotmail.com ([65.55.116.14]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1ON57K-0005ZN-Ge for rsgb_lf_group@blacksheep.org; Fri, 11 Jun 2010 15:21:56 +0100 Received: from BLU146-W21 ([65.55.116.9]) by blu0-omc1-s3.blu0.hotmail.com with Microsoft SMTPSVC(6.0.3790.4675); Fri, 11 Jun 2010 07:21:44 -0700 Message-ID: X-Originating-IP: [138.32.32.166] From: Laurence KL7UK To: Date: Fri, 11 Jun 2010 06:21:44 -0800 Importance: Normal In-Reply-To: <002401cb096b$7d950560$0401a8c0@xphd97xgq27nyf> References: <002401cb096b$7d950560$0401a8c0@xphd97xgq27nyf> MIME-Version: 1.0 X-OriginalArrivalTime: 11 Jun 2010 14:21:44.0977 (UTC) FILETIME=[6B812010:01CB0971] X-Spam-Score: 1.2 (+) X-Spam-Report: autolearn=disabled,HTML_MESSAGE=0.001,SUBJ_ALL_CAPS=1.166 Content-Type: multipart/alternative; boundary="_ace813be-0aec-4004-bd24-9c8ebf9a6d98_" Subject: RE: LF: LF/VLF X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: * X-Spam-Status: No, hits=1.0 required=5.0 tests=FORGED_HOTMAIL_RCVD,HTML_20_30, HTML_MESSAGE,SUBJ_ALL_CAPS 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-sid: 3039ac1d40ce4c1246d36387 X-AOL-IP: 193.82.116.20 X-Mailer: Unknown (No Version) --_ace813be-0aec-4004-bd24-9c8ebf9a6d98_ Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable =20 =20 Mal - are you saying small lambda loops are ineffective for dx working at= LF, say 137Khz? (where within practical verticals give poorer performanc= e in wooded areas....or arent feasible).=20 =20 Past results would not concur; Small backgarden loops producing around 3W= ERP (on a good day!) have been repeatably seen at >12,000kms - so I beg= to differ. =20 Cheers =20 From: g3kevmal@talktalk.net To: rsgb_lf_group@blacksheep.org Date: Fri, 11 Jun 2010 14:39:17 +0100 Subject: LF: LF/VLF All Forget about loops, ground rod induction etc if you want to radiate a dx= signal.The average person could shout and be heard further. A mechanical= alert/fire siren can be heard several miles away by ear. For serious distance DX on vlf a vertical configured antenna is the only= solution, ie loaded inv L, T ant and some insulated ground radials as lon= g as possible. one earth spike at the base of the vertical drop wire connected to radials= . This is the basic approach and can be fine tuned later once you are making= progress and being heard/seen a few hundred kilometres away. 73 de mal/g3kev =20 =20 _________________________________________________________________ Hotmail has tools for the New Busy. Search, chat and e-mail from your inbo= x. http://www.windowslive.com/campaign/thenewbusy?ocid=3DPID28326::T:WLMTAGL:= ON:WL:en-US:WM_HMP:042010_1=3D --_ace813be-0aec-4004-bd24-9c8ebf9a6d98_ Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable  
 
Mal - are you saying small lambda loops are ineffective for dx working at= LF, say 137Khz?  (where within practical verticals give poorer= performance in wooded areas....or arent feasible). 
 
Past results would not concur; Small backgarden loops producing aroun= d 3W ERP (on a good day!) have been repeatably seen at >12,000kms= - so I beg to differ.
 
Cheers
 
From: g3kevmal@talktalk.net
To: rsgb_lf_group@blacksheep.org
Date:= Fri, 11 Jun 2010 14:39:17 +0100
Subject: LF: LF/VLF

    All
Forget about loops, ground rod induction= etc if you want to radiate a dx signal.The average person could shout and= be heard further. A mechanical alert/fire siren can be heard several mile= s away by ear.
For serious distance DX on vlf a ver= tical configured  antenna is the only solution, ie loaded inv L,= T ant and some insulated ground radials as long as possible.
one earth spike at the base of the vertic= al drop wire connected to radials.
This is the basic approach and can be fin= e tuned later once you are making progress and being heard/seen a few hund= red kilometres away.
73 de mal/g3kev
 
 
=
Hotmail has tools for the New Busy. Search, chat and e-mail= from your inbox. = Learn more. =3D --_ace813be-0aec-4004-bd24-9c8ebf9a6d98_--