Return-Path: X-Spam-DCC: paranoid 1481; Body=2 Fuz1=2 Fuz2=2 X-Spam-Checker-Version: SpamAssassin 3.1.3 (2006-06-01) on lipkowski.org X-Spam-Level: ** X-Spam-Status: No, score=2.2 required=5.0 tests=BAYES_00,DNS_FROM_AHBL_RHSBL, FORGED_MUA_OUTLOOK,HTML_40_50,HTML_MESSAGE,SPF_PASS autolearn=no version=3.1.3 Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by paranoid.lipkowski.org (8.13.7/8.13.7) with ESMTP id u9LINKOa001059 for ; Fri, 21 Oct 2016 20:23:20 +0200 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1bxePq-0001EE-Dv for rs_out_1@blacksheep.org; Fri, 21 Oct 2016 19:19:38 +0100 Received: from [195.171.43.34] (helo=relay2.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1bxePV-0001E3-4p for rsgb_lf_group@blacksheep.org; Fri, 21 Oct 2016 19:19:17 +0100 Received: from rgout0802.bt.lon5.cpcloud.co.uk ([65.20.0.149]) by relay2.thorcom.net with esmtp (Exim 4.87) (envelope-from ) id 1bxePN-0003qm-Ca for rsgb_lf_group@blacksheep.org; Fri, 21 Oct 2016 19:19:12 +0100 X-OWM-Source-IP: 86.178.51.135 (GB) X-OWM-Env-Sender: alan.melia@btinternet.com X-Junkmail-Premium-Raw: score=13/50,refid=2.7.2:2016.10.21.173916:17:13.296,ip=,rules=__HAS_MSGID, __SANE_MSGID, MSGID_32HEX_LC, INVALID_MSGID_NO_FQDN, __MSGID_32HEX, __HAS_FROM, __FRAUD_WEBMAIL_FROM, __TO_MALFORMED_2, __TO_NO_NAME, __BOUNCE_CHALLENGE_SUBJ, __BOUNCE_NDR_SUBJ_EXEMPT, __MIME_VERSION, __CT, __CTYPE_MULTIPART_ALT, __CTYPE_HAS_BOUNDARY, __CTYPE_MULTIPART, __HAS_X_PRIORITY, __HAS_MSMAIL_PRI, __HAS_X_MAILER, USER_AGENT_OE, __OUTLOOK_MUA_1, __USER_AGENT_MS_GENERIC, __MIME_TEXT_P2, __MIME_TEXT_H2, __ANY_URI, __URI_WITH_PATH, EU_TLD, URI_ENDS_IN_HTML, __FRAUD_BODY_WEBMAIL, __CP_URI_IN_BODY, BODY_PARA_IS_SENTENCE_URL, __SUBJ_ALPHA_NEGATE, __INT_PROD_TV, SUPERLONG_LINE, __MULTIPLE_URI_TEXT, __URI_IN_BODY, __MULTIPLE_URI_HTML, __HTML_AHREF_TAG, __HAS_HTML, __HTML_TAG_DIV, BODYTEXTP_SIZE_3000_LESS, BODYTEXTH_SIZE_3000_MORE, BODYTEXTH_SIZE_10000_LESS, __MIME_TEXT_H1, __MIME_TEXT_P1, __MIME_HTML, __TAG_EXISTS_HTML, __URI_NS, __FRAUD_WEBMAIL, __OUTLOOK_MUA, __MIME_TEXT_H, __MIME_TEXT_P, FORGED_MUA_OUTLOOK, NO_URI_HTTPS Received: from gnat (86.178.51.135) by rgout08.bt.lon5.cpcloud.co.uk (9.0.019.07.01-1) (authenticated as alan.melia@btinternet.com) id 580320E401724960 for rsgb_lf_group@blacksheep.org; Fri, 21 Oct 2016 19:18:04 +0100 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=btinternet.com; s=btcpcloud; t=1477073949; bh=yjBJofuZwNUe46epfnee7GpkFIQLr0Fwp5kkDBe5if8=; h=Message-ID:From:To:References:Subject:Date:MIME-Version:X-Mailer; b=SMsU/ZyRwEb4txVmrInZbQvIIApjdycld6ecN54yUmCzsFkR145jGRsKXV8Q+t61cpCOerXVExzavHMVFZBXOyOs+2wKvrl9W9+3kuMNxrphISJ7zjwehNo5jVNaRfL9ozTQoKN3lQ9zA1cTUHcuGEYjL/gX/u4bxJgW+ufJVhk= Message-ID: <6893048AD5CF4120954C6BEF5580D237@gnat> From: "Alan Melia" To: References: <1025448629.20161021150108@chriswilson.tv>,<157e7f937f2-157e-d2a@webprd-m84.mail.aol.com> <1477068845521.60681@kuleuven.be> Date: Fri, 21 Oct 2016 19:16:51 +0100 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 V6.00.2900.6157 X-Scan-Signature: 974e9bcd09e4f3403f97af2f38f8fb73 Subject: Re: LF: Distance of LF vertical antenna element from lattice work steel mast? Content-Type: multipart/alternative; boundary="----=_NextPart_000_0038_01D22BCF.AD97FF50" 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-Scanned-By: MIMEDefang 2.56 on 10.1.3.11 Content-Length: 8215 Status: O X-Status: X-Keywords: X-UID: 9135 This is a multi-part message in MIME format. ------=_NextPart_000_0038_01D22BCF.AD97FF50 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Hi Chris another thought.... put some of the loading coil at the top of = the tower, the trouble with this in your situation is that it stops you = operating the aerial on other bands.=20 Look at it another way.....you want to avoid diverting current into the = tower metalwork until it reaches the full height. It get less important = as you go higher, so pull the loading coil 3metres of so away from the = base of the tower and run the "vertical section" at an angle to the top = of the tower. The tower should be grounded. Also keep it away from = brickwork and/or foliage which can be lossy when wet. Alan G3NYK ----- Original Message -----=20 From: Rik Strobbe=20 To: rsgb_lf_group@blacksheep.org=20 Sent: Friday, October 21, 2016 5:54 PM Subject: Re: LF: Distance of LF vertical antenna element from lattice = work steel mast? Hi Chris, to avoid issues with the mast you can either - Feed the antenna at the top of the tower via an isolating = tranformer. The big disadvantage is that you will have to position the loading = coil also at the top of the tower. - Feed the antenna at ground level using a second wire to cancel out = the effect of the tower. Have a look here: http://www.strobbe.eu/on7yd/136ant/#Tower. 73, Rik ON7YD - OR7T -------------------------------------------------------------------------= ----- Van: owner-rsgb_lf_group@blacksheep.org = namens Markus Vester = Verzonden: vrijdag 21 oktober 2016 18:00 Aan: rsgb_lf_group@blacksheep.org Onderwerp: Re: LF: Distance of LF vertical antenna element from = lattice work steel mast?=20 I'd suggest two to three meters. 73, Markus (DF6NM) -----Urspr=FCngliche Mitteilung-----=20 Von: Chris Wilson An: rsgb_lf_group Verschickt: Fr, 21 Okt 2016 4:03 pm Betreff: LF: Distance of LF vertical antenna element from lattice work = steel mast? 21 October 2016 Having improved the grounding here I now want to get at least the lowest corner of my big horizontal roughly square wire loop up higher than the apex of my bungalow it's currently tied to. The highest nearest structure is my 40 foot wind up lattice work steel mast. It would be most convenient to have the vertical element at this corner. How far away from the steel mast should the vertical element be to not have issues please? I strap the window line feeder at the base to form the vertical so I can also use the horizontal loop on HF bands. Thanks --=20 Best regards, Chris 2E0ILY mailto:chris@chriswilson.tv My part time LF grabber is at http://www.chriswilson.tv/grabber.html ------=_NextPart_000_0038_01D22BCF.AD97FF50 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Hi Chris another thought.... put some of the = loading coil=20 at the top of the tower, the trouble with this in your situation is that = it=20 stops you operating the aerial on other bands.
 
Look at it another way.....you want to avoid = diverting=20 current into the tower metalwork until it reaches the full height. It = get less=20 important as you go higher, so pull the loading coil 3metres of so away = from the=20 base of the tower and run the "vertical section" at an angle to the = top of=20 the tower. The tower should be grounded. Also keep it away from = brickwork and/or=20 foliage which can be lossy when wet.
 
Alan
G3NYK
----- Original Message -----
From:=20 Rik=20 Strobbe
Sent: Friday, October 21, 2016 = 5:54=20 PM
Subject: Re: LF: Distance of LF = vertical=20 antenna element from lattice work steel mast?

Hi Chris,

 

to avoid issues with the mast you can either

 

- Feed the antenna at the top of the tower via an isolating = tranformer.

The big disadvantage is that you will have to position the loading = coil=20 also at the top of the tower.

 

- Feed the antenna at ground level using a second wire to = cancel out=20 the effect of the tower.

 

Have a look here: http://www.strobbe.eu/= on7yd/136ant/#Tower.

 

73, Rik  ON7YD - OR7T

 

Van: = owner-rsgb_lf_group@blacksheep.org=20 <owner-rsgb_lf_group@blacksheep.org> namens Markus Vester=20 <markusvester@aol.com>
Verzonden: vrijdag 21 oktober = 2016=20 18:00
Aan: rsgb_lf_group@blacksheep.org
Onderwerp: = Re: LF:=20 Distance of LF vertical antenna element from lattice work steel = mast?=20
 
I'd=20 suggest two to three meters.

73, Markus=20 (DF6NM)


-----Urspr=FCngliche Mitteilung-----
Von: Chris = Wilson=20 <chris@chriswilson.tv>
An: rsgb_lf_group=20 <rsgb_lf_group@blacksheep.org>
Verschickt: Fr, 21 Okt 2016 = 4:03=20 pm
Betreff: LF: Distance of LF vertical antenna element from = lattice work=20 steel mast?

21 October 2016


Having improved = the=20 grounding here I now want to get at least the
lowest corner of my = big=20 horizontal roughly square wire loop up higher
than the apex of my = bungalow=20 it's currently tied to. The highest
nearest structure is my 40 foot = wind up=20 lattice work steel mast. It
would be most convenient to have the = vertical=20 element at this corner.
How far away from the steel mast should the = vertical element be to not
have issues please? I strap the window = line=20 feeder at the base to form
the vertical so I can also use the = horizontal=20 loop on HF bands. Thanks



--


Best = regards,
Chris=20 2E0ILY mailto:chris@chriswilson.tv
=
My=20 part time LF grabber is at
http://www.chriswilson.tv/grabber.html


------=_NextPart_000_0038_01D22BCF.AD97FF50--