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 tA8KBSAV010532 for ; Sun, 8 Nov 2015 21:11:28 +0100 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1ZvWGS-000078-QK for rs_out_1@blacksheep.org; Sun, 08 Nov 2015 20:08:36 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1ZvWGS-00006z-7f for rsgb_lf_group@blacksheep.org; Sun, 08 Nov 2015 20:08:36 +0000 Received: from rhcavuit02.kulnet.kuleuven.be ([134.58.240.130] helo=cavuit02.kulnet.kuleuven.be) by relay1.thorcom.net with esmtps (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.86) (envelope-from ) id 1ZvWFS-0007UZ-QZ for rsgb_lf_group@blacksheep.org; Sun, 08 Nov 2015 20:08:35 +0000 X-KULeuven-Envelope-From: rik.strobbe@fys.kuleuven.be X-KULeuven-Scanned: Found to be clean X-KULeuven-ID: BCF2A128083.A0175 X-KULeuven-Information: Katholieke Universiteit Leuven Received: from icts-p-smtps-2.cc.kuleuven.be (icts-p-smtps-2e.kulnet.kuleuven.be [134.58.240.34]) by cavuit02.kulnet.kuleuven.be (Postfix) with ESMTP id BCF2A128083 for ; Sun, 8 Nov 2015 21:07:01 +0100 (CET) Received: from ICTS-S-HUB2.luna.kuleuven.be (icts-s-hub2.luna.kuleuven.be [10.112.9.16]) (using TLSv1 with cipher AES128-SHA (128/128 bits)) (No client certificate requested) by icts-p-smtps-2.cc.kuleuven.be (Postfix) with ESMTPS id BAA912003B for ; Sun, 8 Nov 2015 21:07:01 +0100 (CET) Received: from ICTS-S-MBX1.luna.kuleuven.be ([fe80::edaf:341f:90e:f70e]) by ICTS-S-HUB2.luna.kuleuven.be ([fe80::8559:ca7c:e195:e15d%26]) with mapi id 14.03.0224.002; Sun, 8 Nov 2015 21:07:01 +0100 X-Kuleuven: This mail passed the K.U.Leuven mailcluster From: Rik Strobbe To: "rsgb_lf_group@blacksheep.org" Thread-Topic: LF: Capacitive top hat question Thread-Index: AQHRFx6rYUPO9O2vbkm9jtEUwLemrJ6MNTwAgAACvQCAAAWrgIAADgGAgAL7q4CAARAGAIACJs2AgAAT6p4= Date: Sun, 8 Nov 2015 20:07:00 +0000 Message-ID: <7E7DFBB4D102A04DB5ADC88D66628A4A444528AF@ICTS-S-MBX1.luna.kuleuven.be> References: <1843908200.20151104162925@chriswilson.tv>, , <8E31BC8EB75546E59F99E35AFAAA0DEE@AGB> <563DD93A.22662.37C4EA@mike.dennison.ntlworld.com>,<563FA745.9010002@posteo.de> In-Reply-To: <563FA745.9010002@posteo.de> Accept-Language: nl-BE, en-GB, en-US Content-Language: nl-BE X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.112.11.11] MIME-Version: 1.0 X-HELO-Warning: Remote host 134.58.240.130 (rhcavuit02.kulnet.kuleuven.be) used invalid HELO/EHLO cavuit02.kulnet.kuleuven.be - verification failed X-Scan-Signature: 6ffbd2c9950b634d6cc91f9565b01a8b Subject: RE: LF: Capacitive top hat question Content-Type: text/plain; charset="us-ascii" 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 Content-Transfer-Encoding: 8bit X-MIME-Autoconverted: from quoted-printable to 8bit by paranoid.lipkowski.org id tA8KBSAV010532 Status: O X-Status: X-Keywords: X-UID: 4920 Hello Stefan, Mike, I assume that a good working dipole at very low height (4m = 0.6% of lambda) is due to a poor soil. I remember to have read somewhere thate (French?) military in the Sahara desert just put a dipole antenna on the sand on top of a dune and it worked fine. 73, Rik ON7YD - OR7T ________________________________________ Van: owner-rsgb_lf_group@blacksheep.org [owner-rsgb_lf_group@blacksheep.org] namens DK7FC [selberdenken@posteo.de] Verzonden: zondag 8 november 2015 20:49 Aan: rsgb_lf_group@blacksheep.org Onderwerp: Re: LF: Capacitive top hat question Hi Mike, Am 07.11.2015 11:58, schrieb Mike Dennison: > [...] > > Several unbelievers have tried using purely horizontal transmitting > antennas and have had poor results. The beauty of amateur radio is > that you can prove something to yourself, but it won't change the > laws of physics. > Well at least on MF i have tried a pure horizontal full size dipole. It was 4m above ground and i worked DL4YHF and some other stations with 50W TX power in July! This antenna was hung up into trees near a walk way in a forest. So if someone has the place, i find this is a real alternative. I just don't care about theories or calculations. Just do it instead! :-) 73, Stefan