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, SPF_PASS 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 u2JGnvCh028967 for ; Sat, 19 Mar 2016 17:49:58 +0100 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1ahJzq-00027H-01 for rs_out_1@blacksheep.org; Sat, 19 Mar 2016 16:45:02 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1ahJzp-000276-Ia for rsgb_lf_group@blacksheep.org; Sat, 19 Mar 2016 16:45:01 +0000 Received: from smtp-out-6.talktalk.net ([62.24.135.70]) by relay1.thorcom.net with esmtp (Exim 4.86) (envelope-from ) id 1ahJzn-0002An-Cy for rsgb_lf_group@blacksheep.org; Sat, 19 Mar 2016 16:45:00 +0000 Received: from [192.168.1.4] ([79.69.133.134]) by smtp.talktalk.net with SMTP id hJzlaJQJUEdAbhJzmaan2s; Sat, 19 Mar 2016 16:44:58 +0000 X-Originating-IP: [79.69.133.134] X-Spam: 0 X-Authority: v=2.1 cv=aYvB5Uct c=1 sm=1 tr=0 a=070qVD+uwPEpIY4rfzJxEg==:117 a=070qVD+uwPEpIY4rfzJxEg==:17 a=L9H7d07YOLsA:10 a=9cW_t1CCXrUA:10 a=s5jvgZ67dGcA:10 a=kj9zAlcOel0A:10 a=nN7BH9HXAAAA:8 a=VVlED5B4AAAA:8 a=F3M5lZpKAAAA:8 a=jHkEdSxLDQasgJtBXSgA:9 a=RNcTmjFUP8HnpOHe:21 a=Ha79qSS3vDFvPsix:21 a=CjuIK1q_8ugA:10 References: <56E526C8.5010401@abelian.org> <1536f9e8813-7821-7aea@webprd-m99.mail.aol.com> <56E5DCEF.4050905@abelian.org> <56E7090D.4090601@tiscali.co.uk> <56E7122E.1090907@abelian.org> <016f01d17e34$65318b80$2f94a280$@comcast.net> <56EAF20F.7050008@abelian.org> <42081A973ECB45D9AEDDCEF41BE9EEE3@Clemens0811> From: Mal Hamilton X-Mailer: iPhone Mail (10B500) In-Reply-To: Message-Id: <650B35C0-9F5A-4414-8BAA-FDDE73279767@talktalk.net> Date: Sat, 19 Mar 2016 16:44:58 +0000 To: "rsgb_lf_group@blacksheep.org" Mime-Version: 1.0 (1.0) X-CMAE-Envelope: MS4wfJbf3Djv5izzrLMvZPG210dp/K1LfUBkSC458cYY6xkW7njpZ1eLO8m/m18uzRUO2Zkvc53zz8KMkQaD9egKKF4vQtk0mn4g3zFMnsoVPrqf2uJHjLU7 zTOIflH8gzZ6hAu7Ebyq2cwl1VWyAa5DtP8PxHEiMFe+sR94LsgnMoJh0XgR2/jqheBhexrkOcY0jQ== X-Scan-Signature: ac0f6ff1af52b6036ac1f4fe0c2bd52c Subject: Re: LF: RE: O.T.: T2FD ANTENNA 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 10.1.3.11 Content-Transfer-Encoding: 8bit X-MIME-Autoconverted: from quoted-printable to 8bit by paranoid.lipkowski.org id u2JGnvCh028967 Status: O X-Status: X-Keywords: X-UID: 7416 This type of aerial goes back to at least the 1950's and had 3 wires in a sloping config making it broad band with a term resistor Called a SFTD and used commercially G3KEV On 19 Mar 2016, at 09:32, Mal Hamilton wrote: > Good RX Aerial > SFTD------ > Sloping Folded Terminated Dipole > > > G3KEV > > > On 19 Mar 2016, at 08:45, "Clemens Paul" wrote: > >> Hi Mauro, >> >> I have no hands on experience with this antenna, >> but simulations by experts have shown that one should go for a ~900 Ohm >> termination resistor and at least 50m length if you want to keep losses >> acceptable (5dB) on 3.5MHz. >> I'll send you the article per PM. >> >> 73 >> Clemens >> DL4RAJ >> >> >> >>> -----Original Message----- >>> From: owner-rsgb_lf_group@blacksheep.org >>> [mailto:owner-rsgb_lf_group@blacksheep.org] On Behalf Of IK1WVQ Mauro >>> Sent: Friday, March 18, 2016 6:13 PM >>> To: rsgb_lf_group@blacksheep.org >>> Subject: LF: O.T.: T2FD ANTENNA >>> >>> Hi to all, >>> >>> someone has experience about the T2FD (Tilted Terminated Folded >>> Dipole) antenna ? >>> >>> My need is a broadband antenna from 3.5 to 14Mhz WITHOUT any matching >>> unit (TX 2W max)... >>> I gladly accept to lose 30% power into the resistive termination, if >>> this is the bandwidth price !! >>> >>> 73 de Mauro IK1WVQ >