Return-Path: X-Spam-DCC: paranoid 1290; 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=-2.4 required=5.0 tests=BAYES_00,DNS_FROM_AHBL_RHSBL 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 t8J7pwJD010346 for ; Sat, 19 Sep 2015 09:51:58 +0200 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1ZdCpk-0006pm-HI for rs_out_1@blacksheep.org; Sat, 19 Sep 2015 08:45:20 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1ZdCpj-0006pd-OO for rsgb_lf_group@blacksheep.org; Sat, 19 Sep 2015 08:45:19 +0100 Received: from moh2-ve2.go2.pl ([193.17.41.200]) by relay1.thorcom.net with esmtps (TLSv1:DHE-RSA-AES256-SHA:256) (Exim 4.86) (envelope-from ) id 1ZdCow-0001Nb-Aj for rsgb_lf_group@blacksheep.org; Sat, 19 Sep 2015 08:45:18 +0100 Received: from moh2-ve2.go2.pl (unknown [10.0.0.200]) by moh2-ve2.go2.pl (Postfix) with ESMTP id 9AFC0CB0007 for ; Sat, 19 Sep 2015 09:44:12 +0200 (CEST) Received: from unknown (unknown [10.0.0.142]) by moh2-ve2.go2.pl (Postfix) with SMTP for ; Sat, 19 Sep 2015 09:44:12 +0200 (CEST) Received: from 89-71-173-120.dynamic.chello.pl [89.71.173.120] by poczta.o2.pl with ESMTP id CKYrMf; Sat, 19 Sep 2015 09:44:12 +0200 Message-ID: <001301d0f2ae$fa2eb260$6401a8c0@ehnebrcdvojcgn> From: "Marcin" To: Date: Sat, 19 Sep 2015 09:44:09 +0200 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2800.1106 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 X-O2-Trust: 2, 60 X-O2-SPF: notchecked X-Scan-Signature: aee9e5eeb35c86f052d502ac97832558 Subject: LF: Ground Content-Type: text/plain; charset="iso-8859-2" Content-Transfer-Encoding: 7bit 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 10.1.3.10 Status: O X-Status: X-Keywords: X-UID: 4101 Hello, I'd like to design a ground for 136kHz/472kHz. I have a few hundred metres of steel tape at my disposal for this. I'd like to find out how deep into ground 136kHz and 472kHz respectively can go? How deep do I have to dig the tape for 136kHz and for 472kHz, or what would suit both frequencies? Thanks in advance. 73! Marcin SQ2BXI