Envelope-to: dave@picks.force9.co.uk Delivery-date: Sat, 21 May 2005 02:12:30 +0100 Received: from pih-spamcore04.plus.net ([192.168.71.8]) by pih-mxcore09.plus.net with esmtp (PlusNet MXCore v1.0) id 1DZIXW-0006Y4-D2 for dave@picks.force9.co.uk; Sat, 21 May 2005 02:12:30 +0100 Received: from Debian-exim by pih-spamcore04.plus.net with spam-scanned (Exim 4.50) id 1DZIXV-0006iI-O1 for dave@picks.force9.co.uk; Sat, 21 May 2005 02:12:30 +0100 Received: from [192.168.101.76] (helo=pih-mxcore10.plus.net) by pih-spamcore04.plus.net with esmtp (Exim 4.50) id 1DZIXV-0006i4-KR for dave@picks.force9.co.uk; Sat, 21 May 2005 02:12:29 +0100 Received: from post.thorcom.com ([193.82.116.20]) by pih-mxcore10.plus.net with esmtp (PlusNet MXCore v1.0) id 1DZIXV-0002Z7-ED for dave@picks.force9.co.uk; Sat, 21 May 2005 02:12:29 +0100 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1DZIXF-00020F-DB for rs_out_1@blacksheep.org; Sat, 21 May 2005 02:12:13 +0100 Received: from [193.82.116.30] (helo=relay.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1DZIXF-000206-0s for rsgb_lf_group@blacksheep.org; Sat, 21 May 2005 02:12:13 +0100 Received: from smtpout01-04.mesa1.secureserver.net ([64.202.165.79]) by relay.thorcom.net with smtp (Exim 4.43) id 1DZIXC-0006ub-Ep for rsgb_lf_group@blacksheep.org; Sat, 21 May 2005 02:12:12 +0100 Received: (qmail 13887 invoked from network); 21 May 2005 01:12:06 -0000 Received: from unknown (68.116.172.18) by smtpout01-04.mesa1.secureserver.net (64.202.165.79) with ESMTP; 21 May 2005 01:12:06 -0000 Message-ID: <000901c55d99$bb7d7cf0$0700a8c0@Laptop> From: "John Andrews" To: rsgb_lf_group@blacksheep.org References: <000c01c55a6e$8d82f740$37d0fc3e@l8p8y6> <000d01c55b45$acb45e60$ac068351@w4o8m9> <002f01c55d97$09df4840$8c802ed8@server> Date: Sat, 21 May 2005 01:12:09 +0100 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.2180 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2180 X-SPF-Result: relay.thorcom.net: 64.202.165.79 is neither permitted nor denied by domain of w1tag.com Subject: LF: Re: Loop antenna problem Content-Type: text/html; charset=windows-1252 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-Spam-Filtered: by PlusNet SpamCORE (v4.00s) Content-transfer-encoding: 8bit

J.B.,

The clamps are in the wrong plane to present a short, so don't worry about that. Describe the connection of the feedline to the RG-213 link, please. I'm guessing that the coax feedline comes to the bottom, continues around to form the loop, and then the center conductor attaches to the feedline shield at the bottom, with no shield connection from the end. Sound right?

The shielding is probably not buying you much, and may be complicating the issue. A simple wire link turn connected to the center conductor and the feedline shield would work as well.

John Andrews, W1TAG