Return-Path: Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by klubnl.pl (8.14.4/8.14.4/Debian-8+deb8u2) with ESMTP id x3IEYpci007067 for ; Thu, 18 Apr 2019 16:34:53 +0200 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1hH83x-00012o-92 for rs_out_1@blacksheep.org; Thu, 18 Apr 2019 15:30:53 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1hH83t-00012f-2h for rsgb_lf_group@blacksheep.org; Thu, 18 Apr 2019 15:30:49 +0100 Received: from rhcavuit01.kulnet.kuleuven.be ([2a02:2c40:0:c0::25:129]) by relay1.thorcom.net with esmtps (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.92) (envelope-from ) id 1hH83r-00034f-Ii for rsgb_lf_group@blacksheep.org; Thu, 18 Apr 2019 15:30:47 +0100 X-KULeuven-Envelope-From: rik.strobbe@kuleuven.be X-KULeuven-Scanned: Found to be clean X-KULeuven-ID: 4F38C12032D.A5354 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 rhcavuit01.kulnet.kuleuven.be (Postfix) with ESMTP id 4F38C12032D for ; Thu, 18 Apr 2019 16:30:43 +0200 (CEST) Received: from ICTS-S-EXMBX23.luna.kuleuven.be (icts-s-exmbx23.luna.kuleuven.be [10.112.11.58]) (using TLSv1.2 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by icts-p-smtps-2.cc.kuleuven.be (Postfix) with ESMTPS id 42710200A4 for ; Thu, 18 Apr 2019 16:30:43 +0200 (CEST) Received: from ICTS-S-EXMBX27.luna.kuleuven.be (10.112.11.62) by ICTS-S-EXMBX23.luna.kuleuven.be (10.112.11.58) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Thu, 18 Apr 2019 16:30:42 +0200 Received: from ICTS-S-EXMBX27.luna.kuleuven.be ([fe80::9c74:2c9a:4c9b:2842]) by ICTS-S-EXMBX27.luna.kuleuven.be ([fe80::9c74:2c9a:4c9b:2842%25]) with mapi id 15.00.1395.000; Thu, 18 Apr 2019 16:30:42 +0200 X-Kuleuven: This mail passed the K.U.Leuven mailcluster From: Rik Strobbe To: "rsgb_lf_group@blacksheep.org" Thread-Topic: LF: NEW VLF antenna Thread-Index: AQHU9fEssaVa8wh5dEu5cQ2fSNgz0KZB+KRt Date: Thu, 18 Apr 2019 14:30:42 +0000 Message-ID: <1555597839628.5793@kuleuven.be> References: <5CADE53C.30201@posteo.de>, In-Reply-To: Accept-Language: nl-BE, en-GB, en-US Content-Language: nl-BE X-MS-Has-Attach: X-MS-TNEF-Correlator: x-ms-exchange-transport-fromentityheader: Hosted x-originating-ip: [10.112.50.1] MIME-Version: 1.0 X-Spam-Score: -2.3 (--) X-Spam-Report: Spam detection software, running on the system "relay1.thorcom.net", has NOT identified this incoming email as spam. The original message has been attached to this so you can view it or label similar future email. If you have any questions, see the administrator of that system for details. Content preview: From the article: "Early tests proved that signals sent from the transmitter to a receiver placed 100 feet away produced VLF radiation up to 300 times more efficiently than other antennas with similar designs." 100 fee [...] Content analysis details: (-2.3 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -2.3 RCVD_IN_DNSWL_MED RBL: Sender listed at http://www.dnswl.org/, medium trust [2a02:2c40:0:c0:0:0:25:129 listed in] [list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record 0.0 HTML_MESSAGE BODY: HTML included in message X-Scan-Signature: f3d1da032404cd5ad9531631c09e3b44 Subject: Re: LF: NEW VLF antenna Content-Type: multipart/alternative; boundary="_000_15555978396285793kuleuvenbe_" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.5 required=5.0 tests=HTML_40_50,HTML_MESSAGE, TO_ADDRESS_EQ_REAL 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 --_000_15555978396285793kuleuvenbe_ Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable >From the article: "Early tests proved that signals sent from the transmitter to a receiver pl= aced 100 feet away produced VLF radiation up to 300 times more efficiently = than other antennas with similar designs." 100 feet (30 meter) is near field for VLF (1/1000 lambda at 10kHz). The claims done in the article might not be relevant to the far field. So I wouldn't recommend to take done your 136kHz / 472kHz wire antenna's ye= t ;-) 73, Rik ON7YD - OR7T ________________________________ Van: owner-rsgb_lf_group@blacksheep.org namens info@aeritel.com Verzonden: donderdag 18 april 2019 16:11 Aan: rsgb_lf_group@blacksheep.org Onderwerp: Re: LF: NEW VLF antenna Hallo, https://incompliancemag.com/creating-a-novel-compact-antenna-that-can-go-wh= ere-radios-cant/ Friends are there any news? Home made new antenna?? '73 from Richard - IK7FMO --_000_15555978396285793kuleuvenbe_ Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

From the article:


"Early tests proved that signals sent from the transmitter&nbs= p;to a receiver placed 100 feet away produced VLF radiation up to 300 time= s more efficiently than other antennas with similar designs."
100 feet (30 meter) is near field for  VLF (1/1000 lambda at 10kH= z).

The claims done in the article might not be relevant to the far fie= ld.

So I wouldn't recommend to take done your 136kHz / 472kHz wire antenna's= yet ;-)


73, Rik  ON7YD - OR7T


Van: owner-rsgb_lf_group@bl= acksheep.org <owner-rsgb_lf_group@blacksheep.org> namens info@aeritel= .com <info@aeritel.com>
Verzonden: donderdag 18 april 2019 16:11
Aan: rsgb_lf_group@blacksheep.org
Onderwerp: Re: LF: NEW VLF antenna
 

Hallo,

https://incompliancemag.com/creating-a-novel-c= ompact-antenna-that-can-go-where-radios-cant/

Friends ar= e there any news? Home made new antenna??


'73 from R= ichard - IK7FMO


--_000_15555978396285793kuleuvenbe_--