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=-2.2 required=5.0 tests=BAYES_00,DNS_FROM_AHBL_RHSBL, FORGED_RCVD_HELO 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 t5OHYwQw025259 for ; Wed, 24 Jun 2015 19:34:58 +0200 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1Z7oVY-0005xi-01 for rs_out_1@blacksheep.org; Wed, 24 Jun 2015 18:30:44 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1Z7oVX-0005xZ-3z for rsgb_lf_group@blacksheep.org; Wed, 24 Jun 2015 18:30:43 +0100 Received: from smtpcmd01231.aruba.it ([62.149.158.231]) by relay1.thorcom.net with esmtp (Exim 4.85) (envelope-from ) id 1Z7oVV-0008A1-FE for rsgb_lf_group@blacksheep.org; Wed, 24 Jun 2015 18:30:41 +0100 Received: from PC-MAURO.stmb.it ([82.48.195.118]) by smtpcmd01.ad.aruba.it with bizsmtp id kHWe1q01H2ZkZ9e01HWejw; Wed, 24 Jun 2015 19:30:39 +0200 X-Mailer: QUALCOMM Windows Eudora Version 7.1.0.9 Date: Wed, 24 Jun 2015 19:30:34 +0200 To: rsgb_lf_group@blacksheep.org, rsgb_lf_group@blacksheep.org From: IK1WVQ Mauro In-Reply-To: <8D27C7D3E7D6748-14A8-F71B3@webmail-vm149.sysops.aol.com> References: <8D27C7D3E7D6748-14A8-F71B3@webmail-vm149.sysops.aol.com> Mime-Version: 1.0 X-Scan-Signature: c1f72e5acb1277e013f90c915ad7ad68 Message-Id: Subject: Re: LF: 476.181 kHz from indoor loop Content-Type: text/plain; charset="us-ascii"; format=flowed 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: 3524 very interesting for WSPR tests ! few questions: - mono-turn or multi-turn ?? - what are you using for match to TX ??? many thanks and 73 de Mauro IK1WVQ At 12:11 24/06/2015, Markus Vester wrote: >I am currently running a DFCW-60 beacon on 476.181 kHz, using the >same 10m^2 indoor transmit loop as previously on LF. With 35 Watts >of RF input, estimated radiated power is around 2 mW, with lobes >pointing west and east. > >The daytime groundwave signal is visible in the bottom panel of the >DK7FC MF grabber. Going by the CCIR plots for 3 mS/m conductivity, >the groundwave attenuation for this distance would be about 23 dB in >excess off lossless 1/r propagation, resulting in approximately 0.2 >uV/m in Heidelberg. > >Best 73, >Markus (DF6NM) > >