Return-Path: Received: from rly-dc09.mx.aol.com (rly-dc09.mail.aol.com [172.19.136.38]) by air-dc07.mail.aol.com (v120.9) with ESMTP id MAILINDC074-b3e47315661221; Wed, 07 Nov 2007 01:08:48 -0400 Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by rly-dc09.mx.aol.com (v120.9) with ESMTP id MAILRELAYINDC092-b3e47315661221; Wed, 07 Nov 2007 01:08:35 -0400 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1Ipe4w-0002VO-SR for rs_out_1@blacksheep.org; Wed, 07 Nov 2007 06:07:54 +0000 Received: from [193.82.59.130] (helo=relay2.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1Ipe4w-0002VF-75 for rsgb_lf_group@blacksheep.org; Wed, 07 Nov 2007 06:07:54 +0000 Received: from bay0-omc3-s22.bay0.hotmail.com ([65.54.246.222]) by relay2.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1Ipe4s-0003jD-So for rsgb_lf_group@blacksheep.org; Wed, 07 Nov 2007 06:07:54 +0000 Received: from BAY124-W18 ([207.46.11.181]) by bay0-omc3-s22.bay0.hotmail.com with Microsoft SMTPSVC(6.0.3790.3959); Tue, 6 Nov 2007 22:07:43 -0800 Message-ID: X-Originating-IP: [138.32.254.21] From: Laurence KL1X To: Date: Tue, 6 Nov 2007 21:07:43 -0900 Importance: Normal In-Reply-To: References: MIME-Version: 1.0 X-OriginalArrivalTime: 07 Nov 2007 06:07:43.0469 (UTC) FILETIME=[8298B1D0:01C82104] X-Spam-Score: 0.7 (/) X-Spam-Report: autolearn=disabled,AWL=0.742,HTML_MESSAGE=0.001 Content-Type: multipart/alternative; boundary="_303eb701-8cbe-4b34-b7ab-1694ea603538_" Subject: RE: LF: WD2XGJ with miniwhip antenna 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-IP: 193.82.116.20 X-AOL-SCOLL-AUTHENTICATION: listenair ; SPF_helo : X-AOL-SCOLL-AUTHENTICATION: listenair ; SPF_822_from : X-Mailer: Unknown (No Version) --_303eb701-8cbe-4b34-b7ab-1694ea603538_ Content-Type: text/plain; charset="Windows-1252" Content-Transfer-Encoding: quoted-printable hi - Miniwhip - not that this is an exacting science I have a length of six= inches as an optimum in urban location with no large MW stations nearby -we= ll more than 50 miles away - I used DCF39 as a marker and MDS on Argo dot 60= with differing lengths of "whip/board" whilst in Shanghai, but the differen= ce from the designed couple of inches to 6 inches was just, just discernible= maybe less than 1dB. As people say just taping/coupling in the capacitance=20= and above a certain value it shouldnt make any odds. =20 On some of my eprobes and I have three or four at times in operation here, =20= I have a BNC on top of my baby bottle so can add and subtract lengths - impr= ovements do exist when using it on HF/500Khz with a longer length here in si= ngapore, but geography, local signals and oddles of other variables makes th= is kind of plug and see. The improvements are probably because the component= s are designed for VLF/LF and get kinda reactive as you go HF and I would pe= rhaps optimize the coupling caps/power iso values if I was going for a dedic= ated HF unit. As it is,the probe works within a 2dB ( or less) of a quarter=20= wave vertical at 10Mhz, and certainly less of a target/static or otherswise. =20 I couldnt have a "longer length" probe in my new home in Alaska due to the p= lethera of v/m station on 530KHz area making a mess - I already know its no= t going to be my solution there when I finally put down, but here its fine. =20 Ill be looking stateside again tonight on 137 and 500 for Eu at your dusk. T= hats if these @#$#@ storms will stop. Sun is shining for the moment... =20 Interestingly enough and tempting fate Im still on my first FETS on all the=20= probes but I really do bond everything pretty well so maybe thats been the s= aving grace. =20 Laurence 9V1 LF From: GandalfG8@aol.comDate: Tue, 6 Nov 2007 20:32:28 -0500To: rsgb_lf_group= @blacksheep.orgSubject: Re: LF: WD2XGJ with miniwhip antenna In a message dated 07/11/2007 01:27:03 GMT Standard Time, GandalfG8@aol.com=20= writes: Next one is planned for a half inch diameter plastic tube........ and going down:-) Should have mentioned that the aim, as always, is to keep the length to no m= ore than 5 or 6 centimetres..... and that's aside from any perverse observations:-) _________________________________________________________________ Windows Live Hotmail and Microsoft Office Outlook =96 together at last. =A0G= et it now. http://office.microsoft.com/en-us/outlook/HA102225181033.aspx?pid=3DCL100626= 971033=3D --_303eb701-8cbe-4b34-b7ab-1694ea603538_ Content-Type: text/html; charset="Windows-1252" Content-Transfer-Encoding: quoted-printable hi - Miniwhip -  not that this is an exacting science I have a length o= f six inches as an optimum in urban location with no large MW stations nearb= y -well more than 50 miles away - I used DCF39 as a marker and MDS on A= rgo dot 60 with differing lengths of "whip/board" whilst in Shanghai, but th= e difference from the designed couple of inches to 6 inches was just, just d= iscernible maybe less than 1dB. As people say just taping/coupling in t= he capacitance and above a certain value it shouldnt make any odds.
 
On some of my eprobes and I have three or four at times in operation he= re,  I have a BNC on top of my baby bottle so can add and subtract= lengths - improvements do exist when using it on HF/500Khz with a longer le= ngth here in singapore, but geography, local signals and oddles of other var= iables makes this kind of plug and see. The improvements are probably becaus= e the components are designed for VLF/LF and get kinda reactive as you go HF= and I would perhaps optimize the coupling caps/power iso values if I was go= ing for a dedicated HF unit. As it is,the probe works within a 2dB ( or less= ) of a quarter wave vertical at 10Mhz, and certainly less of a target/s= tatic or otherswise.
 
I couldnt have a "longer length" probe in my new home in Alaska due to the p= lethera of v/m station on 530KHz area making a mess  - I already know i= ts not going to be my solution there when I finally put down, but here its f= ine.
 
Ill be looking stateside again tonight on 137 and 500 for Eu at your dusk. T= hats if these @#$#@ storms will stop. Sun is shining for the moment...
 
Interestingly enough and tempting fate Im still on my first FETS on all the=20= probes but I really do bond everything pretty well so maybe thats been the s= aving grace.
 
Laurence 9V1 LF


From: GandalfG8@aol.com
Date: Tue, 6 Nov 2007 20:32:28 -0500
To: rsgb_= lf_group@blacksheep.org
Subject: Re: LF: WD2XGJ with miniwhip antenna
=
In a message dated 07/11/2007 01:27:03 GMT Standard Time, GandalfG8@aol= .com writes:
Next one is planned for a half inch diameter plastic tube........
and going down:-)
Should have mentioned that the aim, as always, is to keep the length to=  no more than 5 or 6 centimetres.....
and that's aside from any perverse observations:-)

Windows Live Hotmail and Microsoft Office Outlook =96 toget= her at last. Get it now! =3D --_303eb701-8cbe-4b34-b7ab-1694ea603538_--