Return-Path: Received: from rly-ma05.mx.aol.com (rly-ma05.mail.aol.com [172.20.116.49]) by air-ma03.mail.aol.com (v125.7) with ESMTP id MAILINMA033-8ab4af5205c67; Sat, 07 Nov 2009 02:23:25 -0500 Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by rly-ma05.mx.aol.com (v125.7) with ESMTP id MAILRELAYINMA055-8ab4af5205c67; Sat, 07 Nov 2009 02:23:10 -0500 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1N6fcN-0008FB-BU for rs_out_1@blacksheep.org; Sat, 07 Nov 2009 07:21:51 +0000 Received: from [193.82.116.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1N6fcM-0008F2-OY for rsgb_lf_group@blacksheep.org; Sat, 07 Nov 2009 07:21:50 +0000 Received: from mailout10.t-online.de ([194.25.134.21]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1N6fbH-0003BP-Ll for rsgb_lf_group@blacksheep.org; Sat, 07 Nov 2009 07:20:44 +0000 Received: from fwd01.aul.t-online.de by mailout10.t-online.de with smtp id 1N6fcI-0007b1-01; Sat, 07 Nov 2009 08:21:46 +0100 Received: from df2py (G54dsYZLrhBpo9DBGl9ryzQUKxe9DQ5YSbizIlUs1twMwhcB2m4ZgLS7lTzhJwgQUt@[80.187.101.41]) by fwd01.t-online.de with esmtp id 1N6fcC-09FKyG0; Sat, 7 Nov 2009 08:21:40 +0100 From: "Wolf Ostwald" To: Date: Sat, 7 Nov 2009 08:23:19 +0100 Message-ID: <1686106A1FF945FDB9AC52BD1ECAFB77@df2py> MIME-Version: 1.0 X-Mailer: Microsoft Office Outlook 11 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.5579 Thread-Index: Acpfey4KRSt181+VQluxV6JB528vew== X-ID: G54dsYZLrhBpo9DBGl9ryzQUKxe9DQ5YSbizIlUs1twMwhcB2m4ZgLS7lTzhJwgQUt X-TOI-MSGID: 679c9eac-2999-41b3-a098-75c69f89c56e X-Karma: unknown: X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,HTML_MESSAGE=0.001,UNPARSEABLE_RELAY=0.001 Subject: LF: Stainless steel versus copper Content-Type: multipart/alternative; boundary="----=_NextPart_000_002C_01CA5F83.90F21860" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.1 required=5.0 tests=HTML_60_70,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 ------=_NextPart_000_002C_01CA5F83.90F21860 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Hi ! Is there any experience around about using stainless steel wires for toploads or feeders versus copper ? As to my knowledge there is a certain amount of rf current penetrating into the conductor at 137/500 kHz. Losses are expected to be high in lesser conductive materials at those frequencies. Any ideas about the order of magnitude in current fed antennas ? 73 de wolf df2py / di2bj ------=_NextPart_000_002C_01CA5F83.90F21860 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Hi !

Is there any experience ar= ound about using stainless steel wires for toploads or feeders versus copper ?<= /font>

As to my knowledge there= is a certain amount of rf current penetrating into the conductor at 137/500 kHz. Losses are expe= cted to be high in lesser conductive materials at those frequencies. Any ideas= about the order of magnitude in current fed antennas ?

73 de wolf df2py /= di2bj

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