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=-0.7 required=5.0 tests=BAYES_00,DNS_FROM_AHBL_RHSBL, RATWARE_GECKO_BUILD 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 t4JCsZf3023533 for ; Tue, 19 May 2015 14:54:36 +0200 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1Yugz7-0004DV-0h for rs_out_1@blacksheep.org; Tue, 19 May 2015 13:51:01 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1Yugz6-0004DM-J4 for rsgb_lf_group@blacksheep.org; Tue, 19 May 2015 13:51:00 +0100 Received: from relay2.uni-heidelberg.de ([129.206.210.211]) by relay1.thorcom.net with esmtps (TLSv1:DHE-RSA-AES256-SHA:256) (Exim 4.85) (envelope-from ) id 1Yugz1-00008k-NL for rsgb_lf_group@blacksheep.org; Tue, 19 May 2015 13:50:59 +0100 Received: from crusoe.iup.uni-heidelberg.de (crusoe.iup.uni-heidelberg.de [129.206.22.248]) by relay2.uni-heidelberg.de (8.13.8/8.13.8) with ESMTP id t4JCor3h002272 for ; Tue, 19 May 2015 14:50:54 +0200 Received: from [129.206.22.206] (pc206.iup.uni-heidelberg.de [129.206.22.206]) by crusoe.iup.uni-heidelberg.de (Postfix) with ESMTP id D317EE0261 for ; Tue, 19 May 2015 14:50:53 +0200 (CEST) Message-ID: <555B31AD.8090705@posteo.de> Date: Tue, 19 May 2015 14:50:53 +0200 From: DK7FC User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; de; rv:1.9.1.8) Gecko/20100227 Thunderbird/3.0.3 MIME-Version: 1.0 To: rsgb_lf_group@blacksheep.org References: <579355A36AEE9D4FA555C45D556003AB1B10678B@servigilant.vigilant.local> In-Reply-To: <579355A36AEE9D4FA555C45D556003AB1B10678B@servigilant.vigilant.local> X-Scan-Signature: 5c1f37c04fc013ebbc2288fd3791d043 Subject: Re: LF: 23:16 136 G6AVK de EB3FRN-1 Op32 Deep Search 725 mi -40 dB 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-Scanned-By: MIMEDefang 2.56 on 10.1.3.10 Status: O X-Status: X-Keywords: X-UID: 3148 Hi Luis, Am 19.05.2015 12:46, schrieb VIGILANT Luis Fernández: > [...] > It is amazing to check how just a little of vertical antenna height increase can boost the Tx signal ! :-) > ...so maybe it is worth to try a 10m vertical on your high rise building? :-) > The question is .... What should be expected from a Op2H with Dynamic Search ?? > For low distances it will work as expected, i.e. about 120/30 = 4 => 6 dB 'better' but for DX you will need a stable path! This will work on VLF but not on LF and not at all on MF. This is why WSPR-15 is used on LF but not on MF. For MF, something arround QRSS-10 is the slowest useful mode i think, at least for DX. See https://dl.dropboxusercontent.com/u/19882028/MF/DK7FC_QRSS-10_476_KHz_12-28-2012.jpg to get an impression how blurry a QRSS-10 MF signal becomes in some 1000 km distance. 73, Stefan