Envelope-to: dave@picks.force9.co.uk Delivery-date: Fri, 06 Jan 2006 22:29:07 +0000 Received: by ptb-mxcore02.plus.net with spam-scanned (PlusNet MXCore v2.00) id 1Ev054-0004Ij-B2 for dave@picks.force9.co.uk; Fri, 06 Jan 2006 22:29:06 +0000 Received: from post.thorcom.com ([193.82.116.20]) by ptb-mxcore02.plus.net with esmtp (PlusNet MXCore v2.00) id 1Ev054-0004IL-4R for dave@picks.force9.co.uk; Fri, 06 Jan 2006 22:29:06 +0000 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1Ev04r-0007nd-S9 for rs_out_1@blacksheep.org; Fri, 06 Jan 2006 22:28:53 +0000 Received: from [193.82.59.130] (helo=relay2.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1Ev04r-0007nU-9E for rsgb_lf_group@blacksheep.org; Fri, 06 Jan 2006 22:28:53 +0000 Received: from fmmailgate04.web.de ([217.72.192.242]) by relay2.thorcom.net with esmtp (Exim 4.51) id 1Ev0a9-0007kW-DX for rsgb_lf_group@blacksheep.org; Fri, 06 Jan 2006 23:01:15 +0000 Received: by fmmailgate04.web.de (8.12.10/8.12.10/webde Linux 0.7) with SMTP id k06MSj3L011260 for ; Fri, 6 Jan 2006 23:28:45 +0100 Received: from [217.248.194.179] by freemailng1802.web.de with HTTP; Fri, 06 Jan 2006 23:28:42 +0100 Date: Fri, 06 Jan 2006 23:28:42 +0100 Message-Id: <613573071@web.de> MIME-Version: 1.0 From: Hans-Albrecht Haffa To: rsgb_lf_group@blacksheep.org Organization: http://freemail.web.de/ Subject: Re: LF: ferrite rods Content-Type: text/plain; charset=iso-8859-1; format=flowed Content-Transfer-Encoding: 8bit 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-PN-SpamFiltered: by PlusNet MXCore (v2.00) Dear Peter. If I was to put them into an overlapping bundle should the separate bars > be > a)in physical contact with each other No this is not necessary. The major gap is the distance from pole to pole via the air. > b) completely isolated from each other No, rods may touch each other > c) if glued together is there a specific "glue" that should be used Just fill the rods in an stable tube of plastic material (fiber glass reinforced tube or PVC tube. Aboot the relative permeability of an gapped mag circuit have a look to the amidon catalog (Amidon.de or just try ast Fair Rite, the manufacturer of amidon ferrites. Moreabout soft ferrites and mag. materials upon request. 55, Hans-Albrecht DK 8 ND > rsgb_lf_group@blacksheep.org schrieb am 05.01.06 10:39:39: > > > I have a pile of ferrite rods that I have rescued from radios over the > years. > > I have been thinking about trying to make them into one larger antenna rod > for receiving only. > > Would I get any advantage over a normal short single rod, or do the > advantages from one aspect get cancelled out by other aspects. I'm sure > this must have been tried out before any advice would be appreciated. > > > If I was to put them into an overlapping bundle should the separate bars > be > a)in physical contact with each other > b) completely isolated from each other > c) if glued together is there a specific "glue" that should be used > > > happy new year to all on list > regards > peter G8AFN > > > > -------------------------------------------------------------------- > mail2web - Check your email from the web at > http://mail2web.com/ . > > > ______________________________________________________________ Verschicken Sie romantische, coole und witzige Bilder per SMS! Jetzt bei WEB.DE FreeMail: http://f.web.de/?mc=021193